path: root/lib/stdlib/test/re_testoutput1_split_test.erl

%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2008-2019. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%%     http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% %CopyrightEnd%
%%
-module(re_testoutput1_split_test).
-export([run/0]).
-compile(no_native).
%% This file is generated by running run_pcre_tests:gen_split_test("re_SUITE_data/testoutput1")
join([]) -> [];
join([A]) -> [A];
join([H|T]) -> [H,<<":">>|join(T)].
run() ->
    run0(),
    run1(),
    run2(),
    run3(),
    run4(),
    run5(),
    run6(),
    run7(),
    run8(),
    run9(),
    run10(),
    run11(),
    run12(),
    run13(),
    run14(),
    run15(),
    run16(),
    run17(),
    run18(),
    run19(),
    run20(),
    run21(),
    run22(),
    run23(),
    run24(),
    run25(),
    run26(),
    run27(),
    run28(),
    run29(),
    run30(),
    run31(),
    run32(),
    run33(),
    run34(),
    run35(),
    run36(),
    run37(),
    run38(),
    run39(),
    run40(),
    run41(),
    run42(),
    run43(),
    run44(),
    run45(),
    run46(),
    run47(),
    run48(),
    run49(),
    run50(),
    run51(),
    run52(),
    run53(),
    run54(),
    run55(),
    run56(),
    ok.
run0() ->
    <<"">> = iolist_to_binary(join(re:split("the quick brown fox","the quick brown fox",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("the quick brown fox","the quick brown fox",[{parts,
                                                                                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("the quick brown fox","the quick brown fox",[]))),
    <<"The quick brown FOX">> = iolist_to_binary(join(re:split("The quick brown FOX","the quick brown fox",[trim]))),
    <<"The quick brown FOX">> = iolist_to_binary(join(re:split("The quick brown FOX","the quick brown fox",[{parts,
                                                                                                                                                                                                                            2}]))),
    <<"The quick brown FOX">> = iolist_to_binary(join(re:split("The quick brown FOX","the quick brown fox",[]))),
    <<"What do you know about :?">> = iolist_to_binary(join(re:split("What do you know about the quick brown fox?","the quick brown fox",[trim]))),
    <<"What do you know about :?">> = iolist_to_binary(join(re:split("What do you know about the quick brown fox?","the quick brown fox",[{parts,
                                                                                                                                                                                                                                                                            2}]))),
    <<"What do you know about :?">> = iolist_to_binary(join(re:split("What do you know about the quick brown fox?","the quick brown fox",[]))),
    <<"What do you know about THE QUICK BROWN FOX?">> = iolist_to_binary(join(re:split("What do you know about THE QUICK BROWN FOX?","the quick brown fox",[trim]))),
    <<"What do you know about THE QUICK BROWN FOX?">> = iolist_to_binary(join(re:split("What do you know about THE QUICK BROWN FOX?","the quick brown fox",[{parts,
                                                                                                                                                                                                                                                                            2}]))),
    <<"What do you know about THE QUICK BROWN FOX?">> = iolist_to_binary(join(re:split("What do you know about THE QUICK BROWN FOX?","the quick brown fox",[]))),
    <<"">> = iolist_to_binary(join(re:split("the quick brown fox","The quick brown fox",[caseless,
                                                                                                                                                                                                                          trim]))),
    <<":">> = iolist_to_binary(join(re:split("the quick brown fox","The quick brown fox",[caseless,
                                                                                                                                                                                                                            {parts,
                                                                                                                                                                                                                             2}]))),
    <<":">> = iolist_to_binary(join(re:split("the quick brown fox","The quick brown fox",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("The quick brown FOX","The quick brown fox",[caseless,
                                                                                                                                                                                                                          trim]))),
    <<":">> = iolist_to_binary(join(re:split("The quick brown FOX","The quick brown fox",[caseless,
                                                                                                                                                                                                                            {parts,
                                                                                                                                                                                                                             2}]))),
    <<":">> = iolist_to_binary(join(re:split("The quick brown FOX","The quick brown fox",[caseless]))),
    <<"What do you know about :?">> = iolist_to_binary(join(re:split("What do you know about the quick brown fox?","The quick brown fox",[caseless,
                                                                                                                                                                                                                                                                          trim]))),
    <<"What do you know about :?">> = iolist_to_binary(join(re:split("What do you know about the quick brown fox?","The quick brown fox",[caseless,
                                                                                                                                                                                                                                                                            {parts,
                                                                                                                                                                                                                                                                             2}]))),
    <<"What do you know about :?">> = iolist_to_binary(join(re:split("What do you know about the quick brown fox?","The quick brown fox",[caseless]))),
    <<"What do you know about :?">> = iolist_to_binary(join(re:split("What do you know about THE QUICK BROWN FOX?","The quick brown fox",[caseless,
                                                                                                                                                                                                                                                                          trim]))),
    <<"What do you know about :?">> = iolist_to_binary(join(re:split("What do you know about THE QUICK BROWN FOX?","The quick brown fox",[caseless,
                                                                                                                                                                                                                                                                            {parts,
                                                                                                                                                                                                                                                                             2}]))),
    <<"What do you know about :?">> = iolist_to_binary(join(re:split("What do you know about THE QUICK BROWN FOX?","The quick brown fox",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("abcd	

9;$\\?caxyz","abcd\\t\\n\\r\\f\\a\\e\\071\\x3b\\$\\\\\\?caxyz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abcd	

9;$\\?caxyz","abcd\\t\\n\\r\\f\\a\\e\\071\\x3b\\$\\\\\\?caxyz",[{parts,
                                                                                                    2}]))),
    <<":">> = iolist_to_binary(join(re:split("abcd	

9;$\\?caxyz","abcd\\t\\n\\r\\f\\a\\e\\071\\x3b\\$\\\\\\?caxyz",[]))),
    <<"">> = iolist_to_binary(join(re:split("abxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                      2}]))),
    <<":">> = iolist_to_binary(join(re:split("abxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"">> = iolist_to_binary(join(re:split("abxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                      2}]))),
    <<":">> = iolist_to_binary(join(re:split("abxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"">> = iolist_to_binary(join(re:split("aabxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aabxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                        2}]))),
    <<":">> = iolist_to_binary(join(re:split("aabxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaabxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaabxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                          2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaabxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaabxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaabxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaabxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"">> = iolist_to_binary(join(re:split("abcxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abcxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                        2}]))),
    <<":">> = iolist_to_binary(join(re:split("abcxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"">> = iolist_to_binary(join(re:split("aabcxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aabcxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                          2}]))),
    <<":">> = iolist_to_binary(join(re:split("aabcxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                          2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypqqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypqqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypqqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypqqqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypqqqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypqqqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypqqqqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypqqqqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypqqqqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypqqqqqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypqqqqqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                                    2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypqqqqqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypqqqqqqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypqqqqqqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                                      2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypqqqqqqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaabcxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaabcxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaabcxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"">> = iolist_to_binary(join(re:split("abxyzzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abxyzzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                        2}]))),
    <<":">> = iolist_to_binary(join(re:split("abxyzzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"">> = iolist_to_binary(join(re:split("aabxyzzzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aabxyzzzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("aabxyzzzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaabxyzzzzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaabxyzzzzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaabxyzzzzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaabxyzzzzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaabxyzzzzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaabxyzzzzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"">> = iolist_to_binary(join(re:split("abcxyzzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abcxyzzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                          2}]))),
    <<":">> = iolist_to_binary(join(re:split("abcxyzzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"">> = iolist_to_binary(join(re:split("aabcxyzzzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aabcxyzzzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("aabcxyzzzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaabcxyzzzzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaabcxyzzzzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaabcxyzzzzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaabcxyzzzzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaabcxyzzzzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                                    2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaabcxyzzzzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaabcxyzzzzpqrrrabbbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaabcxyzzzzpqrrrabbbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                                      2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaabcxyzzzzpqrrrabbbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaabcxyzzzzpqrrrabbbxyyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaabcxyzzzzpqrrrabbbxyyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                                        2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaabcxyzzzzpqrrrabbbxyyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypABzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypABzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypABzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypABBzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypABBzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypABBzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<">>>">> = iolist_to_binary(join(re:split(">>>aaabxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<">>>:">> = iolist_to_binary(join(re:split(">>>aaabxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                                2}]))),
    <<">>>:">> = iolist_to_binary(join(re:split(">>>aaabxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<">">> = iolist_to_binary(join(re:split(">aaaabxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<">:">> = iolist_to_binary(join(re:split(">aaaabxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                              2}]))),
    <<">:">> = iolist_to_binary(join(re:split(">aaaabxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<">>>>">> = iolist_to_binary(join(re:split(">>>>abcxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<">>>>:">> = iolist_to_binary(join(re:split(">>>>abcxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                                2}]))),
    <<">>>>:">> = iolist_to_binary(join(re:split(">>>>abcxyzpqrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                              2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"abxyzpqrrabbxyyyypqAzz">> = iolist_to_binary(join(re:split("abxyzpqrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<"abxyzpqrrabbxyyyypqAzz">> = iolist_to_binary(join(re:split("abxyzpqrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                    2}]))),
    <<"abxyzpqrrabbxyyyypqAzz">> = iolist_to_binary(join(re:split("abxyzpqrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"abxyzpqrrrrabbxyyyypqAzz">> = iolist_to_binary(join(re:split("abxyzpqrrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<"abxyzpqrrrrabbxyyyypqAzz">> = iolist_to_binary(join(re:split("abxyzpqrrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                        2}]))),
    <<"abxyzpqrrrrabbxyyyypqAzz">> = iolist_to_binary(join(re:split("abxyzpqrrrrabbxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"abxyzpqrrrabxyyyypqAzz">> = iolist_to_binary(join(re:split("abxyzpqrrrabxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<"abxyzpqrrrabxyyyypqAzz">> = iolist_to_binary(join(re:split("abxyzpqrrrabxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                    2}]))),
    <<"abxyzpqrrrabxyyyypqAzz">> = iolist_to_binary(join(re:split("abxyzpqrrrabxyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"aaaabcxyzzzzpqrrrabbbxyyyyyypqAzz">> = iolist_to_binary(join(re:split("aaaabcxyzzzzpqrrrabbbxyyyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<"aaaabcxyzzzzpqrrrabbbxyyyyyypqAzz">> = iolist_to_binary(join(re:split("aaaabcxyzzzzpqrrrabbbxyyyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                                          2}]))),
    <<"aaaabcxyzzzzpqrrrabbbxyyyyyypqAzz">> = iolist_to_binary(join(re:split("aaaabcxyzzzzpqrrrabbbxyyyyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"aaaabcxyzzzzpqrrrabbbxyyypqAzz">> = iolist_to_binary(join(re:split("aaaabcxyzzzzpqrrrabbbxyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<"aaaabcxyzzzzpqrrrabbbxyyypqAzz">> = iolist_to_binary(join(re:split("aaaabcxyzzzzpqrrrabbbxyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                                    2}]))),
    <<"aaaabcxyzzzzpqrrrabbbxyyypqAzz">> = iolist_to_binary(join(re:split("aaaabcxyzzzzpqrrrabbbxyyypqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<"aaabcxyzpqrrrabbxyyyypqqqqqqqAzz">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypqqqqqqqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[trim]))),
    <<"aaabcxyzpqrrrabbxyyyypqqqqqqqAzz">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypqqqqqqqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[{parts,
                                                                                                                                                                                                                                                                                                        2}]))),
    <<"aaabcxyzpqrrrabbxyyyypqqqqqqqAzz">> = iolist_to_binary(join(re:split("aaabcxyzpqrrrabbxyyyypqqqqqqqAzz","a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz",[]))),
    <<":abc">> = iolist_to_binary(join(re:split("abczz","^(abc){1,2}zz",[trim]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abczz","^(abc){1,2}zz",[{parts,
                                                                                                                                                                                    2}]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abczz","^(abc){1,2}zz",[]))),
    <<":abc">> = iolist_to_binary(join(re:split("abcabczz","^(abc){1,2}zz",[trim]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abcabczz","^(abc){1,2}zz",[{parts,
                                                                                                                                                                                          2}]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abcabczz","^(abc){1,2}zz",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(abc){1,2}zz",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(abc){1,2}zz",[{parts,
                                                                                                                                                                                                2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(abc){1,2}zz",[]))),
    <<"zz">> = iolist_to_binary(join(re:split("zz","^(abc){1,2}zz",[trim]))),
    <<"zz">> = iolist_to_binary(join(re:split("zz","^(abc){1,2}zz",[{parts,
                                                                                                                                                                              2}]))),
    <<"zz">> = iolist_to_binary(join(re:split("zz","^(abc){1,2}zz",[]))),
    <<"abcabcabczz">> = iolist_to_binary(join(re:split("abcabcabczz","^(abc){1,2}zz",[trim]))),
    <<"abcabcabczz">> = iolist_to_binary(join(re:split("abcabcabczz","^(abc){1,2}zz",[{parts,
                                                                                                                                                                                                2}]))),
    <<"abcabcabczz">> = iolist_to_binary(join(re:split("abcabcabczz","^(abc){1,2}zz",[]))),
    <<">>abczz">> = iolist_to_binary(join(re:split(">>abczz","^(abc){1,2}zz",[trim]))),
    <<">>abczz">> = iolist_to_binary(join(re:split(">>abczz","^(abc){1,2}zz",[{parts,
                                                                                                                                                                                        2}]))),
    <<">>abczz">> = iolist_to_binary(join(re:split(">>abczz","^(abc){1,2}zz",[]))),
    <<":b">> = iolist_to_binary(join(re:split("bc","^(b+?|a){1,2}?c",[trim]))),
    <<":b:">> = iolist_to_binary(join(re:split("bc","^(b+?|a){1,2}?c",[{parts,
                                                                                                                                                                                  2}]))),
    <<":b:">> = iolist_to_binary(join(re:split("bc","^(b+?|a){1,2}?c",[]))),
    <<":b">> = iolist_to_binary(join(re:split("bbc","^(b+?|a){1,2}?c",[trim]))),
    <<":b:">> = iolist_to_binary(join(re:split("bbc","^(b+?|a){1,2}?c",[{parts,
                                                                                                                                                                                    2}]))),
    <<":b:">> = iolist_to_binary(join(re:split("bbc","^(b+?|a){1,2}?c",[]))),
    <<":bb">> = iolist_to_binary(join(re:split("bbbc","^(b+?|a){1,2}?c",[trim]))),
    <<":bb:">> = iolist_to_binary(join(re:split("bbbc","^(b+?|a){1,2}?c",[{parts,
                                                                                                                                                                                      2}]))),
    <<":bb:">> = iolist_to_binary(join(re:split("bbbc","^(b+?|a){1,2}?c",[]))),
    <<":a">> = iolist_to_binary(join(re:split("bac","^(b+?|a){1,2}?c",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("bac","^(b+?|a){1,2}?c",[{parts,
                                                                                                                                                                                    2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("bac","^(b+?|a){1,2}?c",[]))),
    <<":a">> = iolist_to_binary(join(re:split("bbac","^(b+?|a){1,2}?c",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("bbac","^(b+?|a){1,2}?c",[{parts,
                                                                                                                                                                                      2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("bbac","^(b+?|a){1,2}?c",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aac","^(b+?|a){1,2}?c",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aac","^(b+?|a){1,2}?c",[{parts,
                                                                                                                                                                                    2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aac","^(b+?|a){1,2}?c",[]))),
    <<":bbbbbbbbbbb">> = iolist_to_binary(join(re:split("abbbbbbbbbbbc","^(b+?|a){1,2}?c",[trim]))),
    <<":bbbbbbbbbbb:">> = iolist_to_binary(join(re:split("abbbbbbbbbbbc","^(b+?|a){1,2}?c",[{parts,
                                                                                                                                                                                                        2}]))),
    <<":bbbbbbbbbbb:">> = iolist_to_binary(join(re:split("abbbbbbbbbbbc","^(b+?|a){1,2}?c",[]))),
    <<":a">> = iolist_to_binary(join(re:split("bbbbbbbbbbbac","^(b+?|a){1,2}?c",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("bbbbbbbbbbbac","^(b+?|a){1,2}?c",[{parts,
                                                                                                                                                                                                        2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("bbbbbbbbbbbac","^(b+?|a){1,2}?c",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(b+?|a){1,2}?c",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(b+?|a){1,2}?c",[{parts,
                                                                                                                                                                                                    2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(b+?|a){1,2}?c",[]))),
    <<"aaac">> = iolist_to_binary(join(re:split("aaac","^(b+?|a){1,2}?c",[trim]))),
    <<"aaac">> = iolist_to_binary(join(re:split("aaac","^(b+?|a){1,2}?c",[{parts,
                                                                                                                                                                                      2}]))),
    <<"aaac">> = iolist_to_binary(join(re:split("aaac","^(b+?|a){1,2}?c",[]))),
    <<"abbbbbbbbbbbac">> = iolist_to_binary(join(re:split("abbbbbbbbbbbac","^(b+?|a){1,2}?c",[trim]))),
    <<"abbbbbbbbbbbac">> = iolist_to_binary(join(re:split("abbbbbbbbbbbac","^(b+?|a){1,2}?c",[{parts,
                                                                                                                                                                                                          2}]))),
    <<"abbbbbbbbbbbac">> = iolist_to_binary(join(re:split("abbbbbbbbbbbac","^(b+?|a){1,2}?c",[]))),
    <<":b">> = iolist_to_binary(join(re:split("bc","^(b+|a){1,2}c",[trim]))),
    <<":b:">> = iolist_to_binary(join(re:split("bc","^(b+|a){1,2}c",[{parts,
                                                                                                                                                                              2}]))),
    <<":b:">> = iolist_to_binary(join(re:split("bc","^(b+|a){1,2}c",[]))),
    <<":bb">> = iolist_to_binary(join(re:split("bbc","^(b+|a){1,2}c",[trim]))),
    <<":bb:">> = iolist_to_binary(join(re:split("bbc","^(b+|a){1,2}c",[{parts,
                                                                                                                                                                                2}]))),
    <<":bb:">> = iolist_to_binary(join(re:split("bbc","^(b+|a){1,2}c",[]))),
    <<":bbb">> = iolist_to_binary(join(re:split("bbbc","^(b+|a){1,2}c",[trim]))),
    <<":bbb:">> = iolist_to_binary(join(re:split("bbbc","^(b+|a){1,2}c",[{parts,
                                                                                                                                                                                  2}]))),
    <<":bbb:">> = iolist_to_binary(join(re:split("bbbc","^(b+|a){1,2}c",[]))),
    <<":a">> = iolist_to_binary(join(re:split("bac","^(b+|a){1,2}c",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("bac","^(b+|a){1,2}c",[{parts,
                                                                                                                                                                                2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("bac","^(b+|a){1,2}c",[]))),
    <<":a">> = iolist_to_binary(join(re:split("bbac","^(b+|a){1,2}c",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("bbac","^(b+|a){1,2}c",[{parts,
                                                                                                                                                                                  2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("bbac","^(b+|a){1,2}c",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aac","^(b+|a){1,2}c",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aac","^(b+|a){1,2}c",[{parts,
                                                                                                                                                                                2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aac","^(b+|a){1,2}c",[]))),
    <<":bbbbbbbbbbb">> = iolist_to_binary(join(re:split("abbbbbbbbbbbc","^(b+|a){1,2}c",[trim]))),
    <<":bbbbbbbbbbb:">> = iolist_to_binary(join(re:split("abbbbbbbbbbbc","^(b+|a){1,2}c",[{parts,
                                                                                                                                                                                                    2}]))),
    <<":bbbbbbbbbbb:">> = iolist_to_binary(join(re:split("abbbbbbbbbbbc","^(b+|a){1,2}c",[]))),
    <<":a">> = iolist_to_binary(join(re:split("bbbbbbbbbbbac","^(b+|a){1,2}c",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("bbbbbbbbbbbac","^(b+|a){1,2}c",[{parts,
                                                                                                                                                                                                    2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("bbbbbbbbbbbac","^(b+|a){1,2}c",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(b+|a){1,2}c",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(b+|a){1,2}c",[{parts,
                                                                                                                                                                                                2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(b+|a){1,2}c",[]))),
    <<"aaac">> = iolist_to_binary(join(re:split("aaac","^(b+|a){1,2}c",[trim]))),
    <<"aaac">> = iolist_to_binary(join(re:split("aaac","^(b+|a){1,2}c",[{parts,
                                                                                                                                                                                  2}]))),
    <<"aaac">> = iolist_to_binary(join(re:split("aaac","^(b+|a){1,2}c",[]))),
    <<"abbbbbbbbbbbac">> = iolist_to_binary(join(re:split("abbbbbbbbbbbac","^(b+|a){1,2}c",[trim]))),
    <<"abbbbbbbbbbbac">> = iolist_to_binary(join(re:split("abbbbbbbbbbbac","^(b+|a){1,2}c",[{parts,
                                                                                                                                                                                                      2}]))),
    <<"abbbbbbbbbbbac">> = iolist_to_binary(join(re:split("abbbbbbbbbbbac","^(b+|a){1,2}c",[]))),
    <<":b">> = iolist_to_binary(join(re:split("bbc","^(b+|a){1,2}?bc",[trim]))),
    <<":b:">> = iolist_to_binary(join(re:split("bbc","^(b+|a){1,2}?bc",[{parts,
                                                                                                                                                                                    2}]))),
    <<":b:">> = iolist_to_binary(join(re:split("bbc","^(b+|a){1,2}?bc",[]))),
    <<":ba">> = iolist_to_binary(join(re:split("babc","^(b*|ba){1,2}?bc",[trim]))),
    <<":ba:">> = iolist_to_binary(join(re:split("babc","^(b*|ba){1,2}?bc",[{parts,
                                                                                                                                                                                        2}]))),
    <<":ba:">> = iolist_to_binary(join(re:split("babc","^(b*|ba){1,2}?bc",[]))),
    <<":ba">> = iolist_to_binary(join(re:split("bbabc","^(b*|ba){1,2}?bc",[trim]))),
    <<":ba:">> = iolist_to_binary(join(re:split("bbabc","^(b*|ba){1,2}?bc",[{parts,
                                                                                                                                                                                          2}]))),
    <<":ba:">> = iolist_to_binary(join(re:split("bbabc","^(b*|ba){1,2}?bc",[]))),
    <<":ba">> = iolist_to_binary(join(re:split("bababc","^(b*|ba){1,2}?bc",[trim]))),
    <<":ba:">> = iolist_to_binary(join(re:split("bababc","^(b*|ba){1,2}?bc",[{parts,
                                                                                                                                                                                            2}]))),
    <<":ba:">> = iolist_to_binary(join(re:split("bababc","^(b*|ba){1,2}?bc",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(b*|ba){1,2}?bc",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(b*|ba){1,2}?bc",[{parts,
                                                                                                                                                                                                      2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(b*|ba){1,2}?bc",[]))),
    <<"bababbc">> = iolist_to_binary(join(re:split("bababbc","^(b*|ba){1,2}?bc",[trim]))),
    <<"bababbc">> = iolist_to_binary(join(re:split("bababbc","^(b*|ba){1,2}?bc",[{parts,
                                                                                                                                                                                              2}]))),
    <<"bababbc">> = iolist_to_binary(join(re:split("bababbc","^(b*|ba){1,2}?bc",[]))),
    <<"babababc">> = iolist_to_binary(join(re:split("babababc","^(b*|ba){1,2}?bc",[trim]))),
    <<"babababc">> = iolist_to_binary(join(re:split("babababc","^(b*|ba){1,2}?bc",[{parts,
                                                                                                                                                                                                2}]))),
    <<"babababc">> = iolist_to_binary(join(re:split("babababc","^(b*|ba){1,2}?bc",[]))),
    <<":ba">> = iolist_to_binary(join(re:split("babc","^(ba|b*){1,2}?bc",[trim]))),
    <<":ba:">> = iolist_to_binary(join(re:split("babc","^(ba|b*){1,2}?bc",[{parts,
                                                                                                                                                                                        2}]))),
    <<":ba:">> = iolist_to_binary(join(re:split("babc","^(ba|b*){1,2}?bc",[]))),
    <<":ba">> = iolist_to_binary(join(re:split("bbabc","^(ba|b*){1,2}?bc",[trim]))),
    <<":ba:">> = iolist_to_binary(join(re:split("bbabc","^(ba|b*){1,2}?bc",[{parts,
                                                                                                                                                                                          2}]))),
    <<":ba:">> = iolist_to_binary(join(re:split("bbabc","^(ba|b*){1,2}?bc",[]))),
    <<":ba">> = iolist_to_binary(join(re:split("bababc","^(ba|b*){1,2}?bc",[trim]))),
    <<":ba:">> = iolist_to_binary(join(re:split("bababc","^(ba|b*){1,2}?bc",[{parts,
                                                                                                                                                                                            2}]))),
    <<":ba:">> = iolist_to_binary(join(re:split("bababc","^(ba|b*){1,2}?bc",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(ba|b*){1,2}?bc",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(ba|b*){1,2}?bc",[{parts,
                                                                                                                                                                                                      2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(ba|b*){1,2}?bc",[]))),
    <<"bababbc">> = iolist_to_binary(join(re:split("bababbc","^(ba|b*){1,2}?bc",[trim]))),
    <<"bababbc">> = iolist_to_binary(join(re:split("bababbc","^(ba|b*){1,2}?bc",[{parts,
                                                                                                                                                                                              2}]))),
    <<"bababbc">> = iolist_to_binary(join(re:split("bababbc","^(ba|b*){1,2}?bc",[]))),
    <<"babababc">> = iolist_to_binary(join(re:split("babababc","^(ba|b*){1,2}?bc",[trim]))),
    <<"babababc">> = iolist_to_binary(join(re:split("babababc","^(ba|b*){1,2}?bc",[{parts,
                                                                                                                                                                                                2}]))),
    <<"babababc">> = iolist_to_binary(join(re:split("babababc","^(ba|b*){1,2}?bc",[]))),
    <<"">> = iolist_to_binary(join(re:split("

;z","^\\ca\\cA\\c[;\\c:",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("

;z","^\\ca\\cA\\c[;\\c:",[{parts,
                                                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("

;z","^\\ca\\cA\\c[;\\c:",[]))),
    <<":thing">> = iolist_to_binary(join(re:split("athing","^[ab\\]cde]",[trim]))),
    <<":thing">> = iolist_to_binary(join(re:split("athing","^[ab\\]cde]",[{parts,
                                                                                                                                                                                   2}]))),
    <<":thing">> = iolist_to_binary(join(re:split("athing","^[ab\\]cde]",[]))),
    <<":thing">> = iolist_to_binary(join(re:split("bthing","^[ab\\]cde]",[trim]))),
    <<":thing">> = iolist_to_binary(join(re:split("bthing","^[ab\\]cde]",[{parts,
                                                                                                                                                                                   2}]))),
    <<":thing">> = iolist_to_binary(join(re:split("bthing","^[ab\\]cde]",[]))),
    <<":thing">> = iolist_to_binary(join(re:split("]thing","^[ab\\]cde]",[trim]))),
    <<":thing">> = iolist_to_binary(join(re:split("]thing","^[ab\\]cde]",[{parts,
                                                                                                                                                                                   2}]))),
    <<":thing">> = iolist_to_binary(join(re:split("]thing","^[ab\\]cde]",[]))),
    <<":thing">> = iolist_to_binary(join(re:split("cthing","^[ab\\]cde]",[trim]))),
    <<":thing">> = iolist_to_binary(join(re:split("cthing","^[ab\\]cde]",[{parts,
                                                                                                                                                                                   2}]))),
    <<":thing">> = iolist_to_binary(join(re:split("cthing","^[ab\\]cde]",[]))),
    <<":thing">> = iolist_to_binary(join(re:split("dthing","^[ab\\]cde]",[trim]))),
    <<":thing">> = iolist_to_binary(join(re:split("dthing","^[ab\\]cde]",[{parts,
                                                                                                                                                                                   2}]))),
    <<":thing">> = iolist_to_binary(join(re:split("dthing","^[ab\\]cde]",[]))),
    <<":thing">> = iolist_to_binary(join(re:split("ething","^[ab\\]cde]",[trim]))),
    <<":thing">> = iolist_to_binary(join(re:split("ething","^[ab\\]cde]",[{parts,
                                                                                                                                                                                   2}]))),
    <<":thing">> = iolist_to_binary(join(re:split("ething","^[ab\\]cde]",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[ab\\]cde]",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[ab\\]cde]",[{parts,
                                                                                                                                                                                             2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[ab\\]cde]",[]))),
    <<"fthing">> = iolist_to_binary(join(re:split("fthing","^[ab\\]cde]",[trim]))),
    <<"fthing">> = iolist_to_binary(join(re:split("fthing","^[ab\\]cde]",[{parts,
                                                                                                                                                                                   2}]))),
    <<"fthing">> = iolist_to_binary(join(re:split("fthing","^[ab\\]cde]",[]))),
    <<"[thing">> = iolist_to_binary(join(re:split("[thing","^[ab\\]cde]",[trim]))),
    <<"[thing">> = iolist_to_binary(join(re:split("[thing","^[ab\\]cde]",[{parts,
                                                                                                                                                                                   2}]))),
    <<"[thing">> = iolist_to_binary(join(re:split("[thing","^[ab\\]cde]",[]))),
    <<"\\thing">> = iolist_to_binary(join(re:split("\\thing","^[ab\\]cde]",[trim]))),
    <<"\\thing">> = iolist_to_binary(join(re:split("\\thing","^[ab\\]cde]",[{parts,
                                                                                                                                                                                       2}]))),
    <<"\\thing">> = iolist_to_binary(join(re:split("\\thing","^[ab\\]cde]",[]))),
    <<":thing">> = iolist_to_binary(join(re:split("]thing","^[]cde]",[trim]))),
    <<":thing">> = iolist_to_binary(join(re:split("]thing","^[]cde]",[{parts,
                                                                                                                                                                          2}]))),
    <<":thing">> = iolist_to_binary(join(re:split("]thing","^[]cde]",[]))),
    <<":thing">> = iolist_to_binary(join(re:split("cthing","^[]cde]",[trim]))),
    <<":thing">> = iolist_to_binary(join(re:split("cthing","^[]cde]",[{parts,
                                                                                                                                                                          2}]))),
    <<":thing">> = iolist_to_binary(join(re:split("cthing","^[]cde]",[]))),
    <<":thing">> = iolist_to_binary(join(re:split("dthing","^[]cde]",[trim]))),
    <<":thing">> = iolist_to_binary(join(re:split("dthing","^[]cde]",[{parts,
                                                                                                                                                                          2}]))),
    <<":thing">> = iolist_to_binary(join(re:split("dthing","^[]cde]",[]))),
    <<":thing">> = iolist_to_binary(join(re:split("ething","^[]cde]",[trim]))),
    <<":thing">> = iolist_to_binary(join(re:split("ething","^[]cde]",[{parts,
                                                                                                                                                                          2}]))),
    <<":thing">> = iolist_to_binary(join(re:split("ething","^[]cde]",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[]cde]",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[]cde]",[{parts,
                                                                                                                                                                                    2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[]cde]",[]))),
    <<"athing">> = iolist_to_binary(join(re:split("athing","^[]cde]",[trim]))),
    <<"athing">> = iolist_to_binary(join(re:split("athing","^[]cde]",[{parts,
                                                                                                                                                                          2}]))),
    <<"athing">> = iolist_to_binary(join(re:split("athing","^[]cde]",[]))),
    <<"fthing">> = iolist_to_binary(join(re:split("fthing","^[]cde]",[trim]))),
    <<"fthing">> = iolist_to_binary(join(re:split("fthing","^[]cde]",[{parts,
                                                                                                                                                                          2}]))),
    <<"fthing">> = iolist_to_binary(join(re:split("fthing","^[]cde]",[]))),
    <<":thing">> = iolist_to_binary(join(re:split("fthing","^[^ab\\]cde]",[trim]))),
    <<":thing">> = iolist_to_binary(join(re:split("fthing","^[^ab\\]cde]",[{parts,
                                                                                                                                                                                     2}]))),
    <<":thing">> = iolist_to_binary(join(re:split("fthing","^[^ab\\]cde]",[]))),
    <<":thing">> = iolist_to_binary(join(re:split("[thing","^[^ab\\]cde]",[trim]))),
    <<":thing">> = iolist_to_binary(join(re:split("[thing","^[^ab\\]cde]",[{parts,
                                                                                                                                                                                     2}]))),
    <<":thing">> = iolist_to_binary(join(re:split("[thing","^[^ab\\]cde]",[]))),
    <<":thing">> = iolist_to_binary(join(re:split("\\thing","^[^ab\\]cde]",[trim]))),
    <<":thing">> = iolist_to_binary(join(re:split("\\thing","^[^ab\\]cde]",[{parts,
                                                                                                                                                                                         2}]))),
    <<":thing">> = iolist_to_binary(join(re:split("\\thing","^[^ab\\]cde]",[]))),
    <<":** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[^ab\\]cde]",[trim]))),
    <<":** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[^ab\\]cde]",[{parts,
                                                                                                                                                                                               2}]))),
    <<":** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[^ab\\]cde]",[]))),
    <<"athing">> = iolist_to_binary(join(re:split("athing","^[^ab\\]cde]",[trim]))),
    <<"athing">> = iolist_to_binary(join(re:split("athing","^[^ab\\]cde]",[{parts,
                                                                                                                                                                                     2}]))),
    <<"athing">> = iolist_to_binary(join(re:split("athing","^[^ab\\]cde]",[]))),
    <<"bthing">> = iolist_to_binary(join(re:split("bthing","^[^ab\\]cde]",[trim]))),
    <<"bthing">> = iolist_to_binary(join(re:split("bthing","^[^ab\\]cde]",[{parts,
                                                                                                                                                                                     2}]))),
    <<"bthing">> = iolist_to_binary(join(re:split("bthing","^[^ab\\]cde]",[]))),
    <<"]thing">> = iolist_to_binary(join(re:split("]thing","^[^ab\\]cde]",[trim]))),
    <<"]thing">> = iolist_to_binary(join(re:split("]thing","^[^ab\\]cde]",[{parts,
                                                                                                                                                                                     2}]))),
    <<"]thing">> = iolist_to_binary(join(re:split("]thing","^[^ab\\]cde]",[]))),
    <<"cthing">> = iolist_to_binary(join(re:split("cthing","^[^ab\\]cde]",[trim]))),
    <<"cthing">> = iolist_to_binary(join(re:split("cthing","^[^ab\\]cde]",[{parts,
                                                                                                                                                                                     2}]))),
    <<"cthing">> = iolist_to_binary(join(re:split("cthing","^[^ab\\]cde]",[]))),
    <<"dthing">> = iolist_to_binary(join(re:split("dthing","^[^ab\\]cde]",[trim]))),
    <<"dthing">> = iolist_to_binary(join(re:split("dthing","^[^ab\\]cde]",[{parts,
                                                                                                                                                                                     2}]))),
    <<"dthing">> = iolist_to_binary(join(re:split("dthing","^[^ab\\]cde]",[]))),
    <<"ething">> = iolist_to_binary(join(re:split("ething","^[^ab\\]cde]",[trim]))),
    <<"ething">> = iolist_to_binary(join(re:split("ething","^[^ab\\]cde]",[{parts,
                                                                                                                                                                                     2}]))),
    <<"ething">> = iolist_to_binary(join(re:split("ething","^[^ab\\]cde]",[]))),
    <<":thing">> = iolist_to_binary(join(re:split("athing","^[^]cde]",[trim]))),
    <<":thing">> = iolist_to_binary(join(re:split("athing","^[^]cde]",[{parts,
                                                                                                                                                                            2}]))),
    <<":thing">> = iolist_to_binary(join(re:split("athing","^[^]cde]",[]))),
    <<":thing">> = iolist_to_binary(join(re:split("fthing","^[^]cde]",[trim]))),
    <<":thing">> = iolist_to_binary(join(re:split("fthing","^[^]cde]",[{parts,
                                                                                                                                                                            2}]))),
    <<":thing">> = iolist_to_binary(join(re:split("fthing","^[^]cde]",[]))),
    <<":** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[^]cde]",[trim]))),
    <<":** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[^]cde]",[{parts,
                                                                                                                                                                                      2}]))),
    <<":** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[^]cde]",[]))),
    <<"]thing">> = iolist_to_binary(join(re:split("]thing","^[^]cde]",[trim]))),
    <<"]thing">> = iolist_to_binary(join(re:split("]thing","^[^]cde]",[{parts,
                                                                                                                                                                            2}]))),
    <<"]thing">> = iolist_to_binary(join(re:split("]thing","^[^]cde]",[]))),
    <<"cthing">> = iolist_to_binary(join(re:split("cthing","^[^]cde]",[trim]))),
    <<"cthing">> = iolist_to_binary(join(re:split("cthing","^[^]cde]",[{parts,
                                                                                                                                                                            2}]))),
    <<"cthing">> = iolist_to_binary(join(re:split("cthing","^[^]cde]",[]))),
    <<"dthing">> = iolist_to_binary(join(re:split("dthing","^[^]cde]",[trim]))),
    <<"dthing">> = iolist_to_binary(join(re:split("dthing","^[^]cde]",[{parts,
                                                                                                                                                                            2}]))),
    <<"dthing">> = iolist_to_binary(join(re:split("dthing","^[^]cde]",[]))),
    <<"ething">> = iolist_to_binary(join(re:split("ething","^[^]cde]",[trim]))),
    <<"ething">> = iolist_to_binary(join(re:split("ething","^[^]cde]",[{parts,
                                                                                                                                                                            2}]))),
    <<"ething">> = iolist_to_binary(join(re:split("ething","^[^]cde]",[]))),
    <<"">> = iolist_to_binary(join(re:split("0","^[0-9]+$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("0","^[0-9]+$",[{parts,
                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("0","^[0-9]+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("1","^[0-9]+$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("1","^[0-9]+$",[{parts,
                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("1","^[0-9]+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("2","^[0-9]+$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("2","^[0-9]+$",[{parts,
                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("2","^[0-9]+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("3","^[0-9]+$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("3","^[0-9]+$",[{parts,
                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("3","^[0-9]+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("4","^[0-9]+$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("4","^[0-9]+$",[{parts,
                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("4","^[0-9]+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("5","^[0-9]+$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("5","^[0-9]+$",[{parts,
                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("5","^[0-9]+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("6","^[0-9]+$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("6","^[0-9]+$",[{parts,
                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("6","^[0-9]+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("7","^[0-9]+$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("7","^[0-9]+$",[{parts,
                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("7","^[0-9]+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("8","^[0-9]+$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("8","^[0-9]+$",[{parts,
                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("8","^[0-9]+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("9","^[0-9]+$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("9","^[0-9]+$",[{parts,
                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("9","^[0-9]+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("10","^[0-9]+$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("10","^[0-9]+$",[{parts,
                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("10","^[0-9]+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("100","^[0-9]+$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("100","^[0-9]+$",[{parts,
                                                                                                                                                                       2}]))),
    <<":">> = iolist_to_binary(join(re:split("100","^[0-9]+$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[0-9]+$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[0-9]+$",[{parts,
                                                                                                                                                                                       2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[0-9]+$",[]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","^[0-9]+$",[trim]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","^[0-9]+$",[{parts,
                                                                                                                                                                       2}]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","^[0-9]+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("enter","^.*nter",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("enter","^.*nter",[{parts,
                                                                                                                                                                        2}]))),
    <<":">> = iolist_to_binary(join(re:split("enter","^.*nter",[]))),
    <<"">> = iolist_to_binary(join(re:split("inter","^.*nter",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("inter","^.*nter",[{parts,
                                                                                                                                                                        2}]))),
    <<":">> = iolist_to_binary(join(re:split("inter","^.*nter",[]))),
    <<"">> = iolist_to_binary(join(re:split("uponter","^.*nter",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("uponter","^.*nter",[{parts,
                                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("uponter","^.*nter",[]))),
    ok.
run1() ->
    <<"">> = iolist_to_binary(join(re:split("xxx0","^xxx[0-9]+$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("xxx0","^xxx[0-9]+$",[{parts,
                                                                                                                                                                               2}]))),
    <<":">> = iolist_to_binary(join(re:split("xxx0","^xxx[0-9]+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("xxx1234","^xxx[0-9]+$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("xxx1234","^xxx[0-9]+$",[{parts,
                                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("xxx1234","^xxx[0-9]+$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^xxx[0-9]+$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^xxx[0-9]+$",[{parts,
                                                                                                                                                                                             2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^xxx[0-9]+$",[]))),
    <<"xxx">> = iolist_to_binary(join(re:split("xxx","^xxx[0-9]+$",[trim]))),
    <<"xxx">> = iolist_to_binary(join(re:split("xxx","^xxx[0-9]+$",[{parts,
                                                                                                                                                                             2}]))),
    <<"xxx">> = iolist_to_binary(join(re:split("xxx","^xxx[0-9]+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("x123","^.+[0-9][0-9][0-9]$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("x123","^.+[0-9][0-9][0-9]$",[{parts,
                                                                                                                                                                                               2}]))),
    <<":">> = iolist_to_binary(join(re:split("x123","^.+[0-9][0-9][0-9]$",[]))),
    <<"">> = iolist_to_binary(join(re:split("xx123","^.+[0-9][0-9][0-9]$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("xx123","^.+[0-9][0-9][0-9]$",[{parts,
                                                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("xx123","^.+[0-9][0-9][0-9]$",[]))),
    <<"">> = iolist_to_binary(join(re:split("123456","^.+[0-9][0-9][0-9]$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("123456","^.+[0-9][0-9][0-9]$",[{parts,
                                                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("123456","^.+[0-9][0-9][0-9]$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^.+[0-9][0-9][0-9]$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^.+[0-9][0-9][0-9]$",[{parts,
                                                                                                                                                                                                             2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^.+[0-9][0-9][0-9]$",[]))),
    <<"123">> = iolist_to_binary(join(re:split("123","^.+[0-9][0-9][0-9]$",[trim]))),
    <<"123">> = iolist_to_binary(join(re:split("123","^.+[0-9][0-9][0-9]$",[{parts,
                                                                                                                                                                                             2}]))),
    <<"123">> = iolist_to_binary(join(re:split("123","^.+[0-9][0-9][0-9]$",[]))),
    <<"">> = iolist_to_binary(join(re:split("x1234","^.+[0-9][0-9][0-9]$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("x1234","^.+[0-9][0-9][0-9]$",[{parts,
                                                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("x1234","^.+[0-9][0-9][0-9]$",[]))),
    <<"">> = iolist_to_binary(join(re:split("x123","^.+?[0-9][0-9][0-9]$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("x123","^.+?[0-9][0-9][0-9]$",[{parts,
                                                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("x123","^.+?[0-9][0-9][0-9]$",[]))),
    <<"">> = iolist_to_binary(join(re:split("xx123","^.+?[0-9][0-9][0-9]$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("xx123","^.+?[0-9][0-9][0-9]$",[{parts,
                                                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("xx123","^.+?[0-9][0-9][0-9]$",[]))),
    <<"">> = iolist_to_binary(join(re:split("123456","^.+?[0-9][0-9][0-9]$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("123456","^.+?[0-9][0-9][0-9]$",[{parts,
                                                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("123456","^.+?[0-9][0-9][0-9]$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^.+?[0-9][0-9][0-9]$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^.+?[0-9][0-9][0-9]$",[{parts,
                                                                                                                                                                                                               2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^.+?[0-9][0-9][0-9]$",[]))),
    <<"123">> = iolist_to_binary(join(re:split("123","^.+?[0-9][0-9][0-9]$",[trim]))),
    <<"123">> = iolist_to_binary(join(re:split("123","^.+?[0-9][0-9][0-9]$",[{parts,
                                                                                                                                                                                               2}]))),
    <<"123">> = iolist_to_binary(join(re:split("123","^.+?[0-9][0-9][0-9]$",[]))),
    <<"">> = iolist_to_binary(join(re:split("x1234","^.+?[0-9][0-9][0-9]$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("x1234","^.+?[0-9][0-9][0-9]$",[{parts,
                                                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("x1234","^.+?[0-9][0-9][0-9]$",[]))),
    <<":abc:pqr">> = iolist_to_binary(join(re:split("abc!pqr=apquxz.ixr.zzz.ac.uk","^([^!]+)!(.+)=apquxz\\.ixr\\.zzz\\.ac\\.uk$",[trim]))),
    <<":abc:pqr:">> = iolist_to_binary(join(re:split("abc!pqr=apquxz.ixr.zzz.ac.uk","^([^!]+)!(.+)=apquxz\\.ixr\\.zzz\\.ac\\.uk$",[{parts,
                                                                                                                                                                                                                                                                                                   2}]))),
    <<":abc:pqr:">> = iolist_to_binary(join(re:split("abc!pqr=apquxz.ixr.zzz.ac.uk","^([^!]+)!(.+)=apquxz\\.ixr\\.zzz\\.ac\\.uk$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^([^!]+)!(.+)=apquxz\\.ixr\\.zzz\\.ac\\.uk$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^([^!]+)!(.+)=apquxz\\.ixr\\.zzz\\.ac\\.uk$",[{parts,
                                                                                                                                                                                                                                                                 2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^([^!]+)!(.+)=apquxz\\.ixr\\.zzz\\.ac\\.uk$",[]))),
    <<"!pqr=apquxz.ixr.zzz.ac.uk">> = iolist_to_binary(join(re:split("!pqr=apquxz.ixr.zzz.ac.uk","^([^!]+)!(.+)=apquxz\\.ixr\\.zzz\\.ac\\.uk$",[trim]))),
    <<"!pqr=apquxz.ixr.zzz.ac.uk">> = iolist_to_binary(join(re:split("!pqr=apquxz.ixr.zzz.ac.uk","^([^!]+)!(.+)=apquxz\\.ixr\\.zzz\\.ac\\.uk$",[{parts,
                                                                                                                                                                                                                                                                                             2}]))),
    <<"!pqr=apquxz.ixr.zzz.ac.uk">> = iolist_to_binary(join(re:split("!pqr=apquxz.ixr.zzz.ac.uk","^([^!]+)!(.+)=apquxz\\.ixr\\.zzz\\.ac\\.uk$",[]))),
    <<"abc!=apquxz.ixr.zzz.ac.uk">> = iolist_to_binary(join(re:split("abc!=apquxz.ixr.zzz.ac.uk","^([^!]+)!(.+)=apquxz\\.ixr\\.zzz\\.ac\\.uk$",[trim]))),
    <<"abc!=apquxz.ixr.zzz.ac.uk">> = iolist_to_binary(join(re:split("abc!=apquxz.ixr.zzz.ac.uk","^([^!]+)!(.+)=apquxz\\.ixr\\.zzz\\.ac\\.uk$",[{parts,
                                                                                                                                                                                                                                                                                             2}]))),
    <<"abc!=apquxz.ixr.zzz.ac.uk">> = iolist_to_binary(join(re:split("abc!=apquxz.ixr.zzz.ac.uk","^([^!]+)!(.+)=apquxz\\.ixr\\.zzz\\.ac\\.uk$",[]))),
    <<"abc!pqr=apquxz:ixr.zzz.ac.uk">> = iolist_to_binary(join(re:split("abc!pqr=apquxz:ixr.zzz.ac.uk","^([^!]+)!(.+)=apquxz\\.ixr\\.zzz\\.ac\\.uk$",[trim]))),
    <<"abc!pqr=apquxz:ixr.zzz.ac.uk">> = iolist_to_binary(join(re:split("abc!pqr=apquxz:ixr.zzz.ac.uk","^([^!]+)!(.+)=apquxz\\.ixr\\.zzz\\.ac\\.uk$",[{parts,
                                                                                                                                                                                                                                                                                                   2}]))),
    <<"abc!pqr=apquxz:ixr.zzz.ac.uk">> = iolist_to_binary(join(re:split("abc!pqr=apquxz:ixr.zzz.ac.uk","^([^!]+)!(.+)=apquxz\\.ixr\\.zzz\\.ac\\.uk$",[]))),
    <<"abc!pqr=apquxz.ixr.zzz.ac.ukk">> = iolist_to_binary(join(re:split("abc!pqr=apquxz.ixr.zzz.ac.ukk","^([^!]+)!(.+)=apquxz\\.ixr\\.zzz\\.ac\\.uk$",[trim]))),
    <<"abc!pqr=apquxz.ixr.zzz.ac.ukk">> = iolist_to_binary(join(re:split("abc!pqr=apquxz.ixr.zzz.ac.ukk","^([^!]+)!(.+)=apquxz\\.ixr\\.zzz\\.ac\\.uk$",[{parts,
                                                                                                                                                                                                                                                                                                     2}]))),
    <<"abc!pqr=apquxz.ixr.zzz.ac.ukk">> = iolist_to_binary(join(re:split("abc!pqr=apquxz.ixr.zzz.ac.ukk","^([^!]+)!(.+)=apquxz\\.ixr\\.zzz\\.ac\\.uk$",[]))),
    <<"Well, we need a colon: somewhere">> = iolist_to_binary(join(re:split("Well, we need a colon: somewhere",":",[trim]))),
    <<"Well, we need a colon: somewhere">> = iolist_to_binary(join(re:split("Well, we need a colon: somewhere",":",[{parts,
                                                                                                                                                                                                                  2}]))),
    <<"Well, we need a colon: somewhere">> = iolist_to_binary(join(re:split("Well, we need a colon: somewhere",":",[]))),
    <<"*** Fail if we don't">> = iolist_to_binary(join(re:split("*** Fail if we don't",":",[trim]))),
    <<"*** Fail if we don't">> = iolist_to_binary(join(re:split("*** Fail if we don't",":",[{parts,
                                                                                                                                                                                                  2}]))),
    <<"*** Fail if we don't">> = iolist_to_binary(join(re:split("*** Fail if we don't",":",[]))),
    <<":0abc">> = iolist_to_binary(join(re:split("0abc","([\\da-f:]+)$",[caseless,
                                                                                                                                                                                  trim]))),
    <<":0abc:">> = iolist_to_binary(join(re:split("0abc","([\\da-f:]+)$",[caseless,
                                                                                                                                                                                    {parts,
                                                                                                                                                                                     2}]))),
    <<":0abc:">> = iolist_to_binary(join(re:split("0abc","([\\da-f:]+)$",[caseless]))),
    <<":abc">> = iolist_to_binary(join(re:split("abc","([\\da-f:]+)$",[caseless,
                                                                                                                                                                                trim]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abc","([\\da-f:]+)$",[caseless,
                                                                                                                                                                                  {parts,
                                                                                                                                                                                   2}]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abc","([\\da-f:]+)$",[caseless]))),
    <<":fed">> = iolist_to_binary(join(re:split("fed","([\\da-f:]+)$",[caseless,
                                                                                                                                                                                trim]))),
    <<":fed:">> = iolist_to_binary(join(re:split("fed","([\\da-f:]+)$",[caseless,
                                                                                                                                                                                  {parts,
                                                                                                                                                                                   2}]))),
    <<":fed:">> = iolist_to_binary(join(re:split("fed","([\\da-f:]+)$",[caseless]))),
    <<":E">> = iolist_to_binary(join(re:split("E","([\\da-f:]+)$",[caseless,
                                                                                                                                                                            trim]))),
    <<":E:">> = iolist_to_binary(join(re:split("E","([\\da-f:]+)$",[caseless,
                                                                                                                                                                              {parts,
                                                                                                                                                                               2}]))),
    <<":E:">> = iolist_to_binary(join(re:split("E","([\\da-f:]+)$",[caseless]))),
    <<":::">> = iolist_to_binary(join(re:split("::","([\\da-f:]+)$",[caseless,
                                                                                                                                                                              trim]))),
    <<"::::">> = iolist_to_binary(join(re:split("::","([\\da-f:]+)$",[caseless,
                                                                                                                                                                                {parts,
                                                                                                                                                                                 2}]))),
    <<"::::">> = iolist_to_binary(join(re:split("::","([\\da-f:]+)$",[caseless]))),
    <<":5f03:12C0::932e">> = iolist_to_binary(join(re:split("5f03:12C0::932e","([\\da-f:]+)$",[caseless,
                                                                                                                                                                                                        trim]))),
    <<":5f03:12C0::932e:">> = iolist_to_binary(join(re:split("5f03:12C0::932e","([\\da-f:]+)$",[caseless,
                                                                                                                                                                                                          {parts,
                                                                                                                                                                                                           2}]))),
    <<":5f03:12C0::932e:">> = iolist_to_binary(join(re:split("5f03:12C0::932e","([\\da-f:]+)$",[caseless]))),
    <<"fed :def">> = iolist_to_binary(join(re:split("fed def","([\\da-f:]+)$",[caseless,
                                                                                                                                                                                        trim]))),
    <<"fed :def:">> = iolist_to_binary(join(re:split("fed def","([\\da-f:]+)$",[caseless,
                                                                                                                                                                                          {parts,
                                                                                                                                                                                           2}]))),
    <<"fed :def:">> = iolist_to_binary(join(re:split("fed def","([\\da-f:]+)$",[caseless]))),
    <<"Any old stu:ff">> = iolist_to_binary(join(re:split("Any old stuff","([\\da-f:]+)$",[caseless,
                                                                                                                                                                                                    trim]))),
    <<"Any old stu:ff:">> = iolist_to_binary(join(re:split("Any old stuff","([\\da-f:]+)$",[caseless,
                                                                                                                                                                                                      {parts,
                                                                                                                                                                                                       2}]))),
    <<"Any old stu:ff:">> = iolist_to_binary(join(re:split("Any old stuff","([\\da-f:]+)$",[caseless]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","([\\da-f:]+)$",[caseless,
                                                                                                                                                                                                trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","([\\da-f:]+)$",[caseless,
                                                                                                                                                                                                  {parts,
                                                                                                                                                                                                   2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","([\\da-f:]+)$",[caseless]))),
    <<"0zzz">> = iolist_to_binary(join(re:split("0zzz","([\\da-f:]+)$",[caseless,
                                                                                                                                                                                  trim]))),
    <<"0zzz">> = iolist_to_binary(join(re:split("0zzz","([\\da-f:]+)$",[caseless,
                                                                                                                                                                                    {parts,
                                                                                                                                                                                     2}]))),
    <<"0zzz">> = iolist_to_binary(join(re:split("0zzz","([\\da-f:]+)$",[caseless]))),
    <<"gzzz">> = iolist_to_binary(join(re:split("gzzz","([\\da-f:]+)$",[caseless,
                                                                                                                                                                                  trim]))),
    <<"gzzz">> = iolist_to_binary(join(re:split("gzzz","([\\da-f:]+)$",[caseless,
                                                                                                                                                                                    {parts,
                                                                                                                                                                                     2}]))),
    <<"gzzz">> = iolist_to_binary(join(re:split("gzzz","([\\da-f:]+)$",[caseless]))),
    <<"fed ">> = iolist_to_binary(join(re:split("fed ","([\\da-f:]+)$",[caseless,
                                                                                                                                                                                  trim]))),
    <<"fed ">> = iolist_to_binary(join(re:split("fed ","([\\da-f:]+)$",[caseless,
                                                                                                                                                                                    {parts,
                                                                                                                                                                                     2}]))),
    <<"fed ">> = iolist_to_binary(join(re:split("fed ","([\\da-f:]+)$",[caseless]))),
    <<"Any old rubbish">> = iolist_to_binary(join(re:split("Any old rubbish","([\\da-f:]+)$",[caseless,
                                                                                                                                                                                                        trim]))),
    <<"Any old rubbish">> = iolist_to_binary(join(re:split("Any old rubbish","([\\da-f:]+)$",[caseless,
                                                                                                                                                                                                          {parts,
                                                                                                                                                                                                           2}]))),
    <<"Any old rubbish">> = iolist_to_binary(join(re:split("Any old rubbish","([\\da-f:]+)$",[caseless]))),
    <<":1:2:3">> = iolist_to_binary(join(re:split(".1.2.3","^.*\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})$",[trim]))),
    <<":1:2:3:">> = iolist_to_binary(join(re:split(".1.2.3","^.*\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})$",[{parts,
                                                                                                                                                                                                                                                         2}]))),
    <<":1:2:3:">> = iolist_to_binary(join(re:split(".1.2.3","^.*\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})$",[]))),
    <<":12:123:0">> = iolist_to_binary(join(re:split("A.12.123.0","^.*\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})$",[trim]))),
    <<":12:123:0:">> = iolist_to_binary(join(re:split("A.12.123.0","^.*\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})$",[{parts,
                                                                                                                                                                                                                                                                 2}]))),
    <<":12:123:0:">> = iolist_to_binary(join(re:split("A.12.123.0","^.*\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^.*\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^.*\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})$",[{parts,
                                                                                                                                                                                                                                                                   2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^.*\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})$",[]))),
    <<".1.2.3333">> = iolist_to_binary(join(re:split(".1.2.3333","^.*\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})$",[trim]))),
    <<".1.2.3333">> = iolist_to_binary(join(re:split(".1.2.3333","^.*\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})$",[{parts,
                                                                                                                                                                                                                                                               2}]))),
    <<".1.2.3333">> = iolist_to_binary(join(re:split(".1.2.3333","^.*\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})$",[]))),
    <<"1.2.3">> = iolist_to_binary(join(re:split("1.2.3","^.*\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})$",[trim]))),
    <<"1.2.3">> = iolist_to_binary(join(re:split("1.2.3","^.*\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})$",[{parts,
                                                                                                                                                                                                                                                       2}]))),
    <<"1.2.3">> = iolist_to_binary(join(re:split("1.2.3","^.*\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})$",[]))),
    <<"1234.2.3">> = iolist_to_binary(join(re:split("1234.2.3","^.*\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})$",[trim]))),
    <<"1234.2.3">> = iolist_to_binary(join(re:split("1234.2.3","^.*\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})$",[{parts,
                                                                                                                                                                                                                                                             2}]))),
    <<"1234.2.3">> = iolist_to_binary(join(re:split("1234.2.3","^.*\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})$",[]))),
    <<":1:non-sp1:non-sp2">> = iolist_to_binary(join(re:split("1 IN SOA non-sp1 non-sp2(","^(\\d+)\\s+IN\\s+SOA\\s+(\\S+)\\s+(\\S+)\\s*\\(\\s*$",[trim]))),
    <<":1:non-sp1:non-sp2:">> = iolist_to_binary(join(re:split("1 IN SOA non-sp1 non-sp2(","^(\\d+)\\s+IN\\s+SOA\\s+(\\S+)\\s+(\\S+)\\s*\\(\\s*$",[{parts,
                                                                                                                                                                                                                                                                                                                     2}]))),
    <<":1:non-sp1:non-sp2:">> = iolist_to_binary(join(re:split("1 IN SOA non-sp1 non-sp2(","^(\\d+)\\s+IN\\s+SOA\\s+(\\S+)\\s+(\\S+)\\s*\\(\\s*$",[]))),
    <<":1:non-sp1:non-sp2">> = iolist_to_binary(join(re:split("1    IN    SOA    non-sp1    non-sp2   (","^(\\d+)\\s+IN\\s+SOA\\s+(\\S+)\\s+(\\S+)\\s*\\(\\s*$",[trim]))),
    <<":1:non-sp1:non-sp2:">> = iolist_to_binary(join(re:split("1    IN    SOA    non-sp1    non-sp2   (","^(\\d+)\\s+IN\\s+SOA\\s+(\\S+)\\s+(\\S+)\\s*\\(\\s*$",[{parts,
                                                                                                                                                                                                                                                                                                                                                   2}]))),
    <<":1:non-sp1:non-sp2:">> = iolist_to_binary(join(re:split("1    IN    SOA    non-sp1    non-sp2   (","^(\\d+)\\s+IN\\s+SOA\\s+(\\S+)\\s+(\\S+)\\s*\\(\\s*$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(\\d+)\\s+IN\\s+SOA\\s+(\\S+)\\s+(\\S+)\\s*\\(\\s*$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(\\d+)\\s+IN\\s+SOA\\s+(\\S+)\\s+(\\S+)\\s*\\(\\s*$",[{parts,
                                                                                                                                                                                                                                                                                         2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(\\d+)\\s+IN\\s+SOA\\s+(\\S+)\\s+(\\S+)\\s*\\(\\s*$",[]))),
    <<"1IN SOA non-sp1 non-sp2(">> = iolist_to_binary(join(re:split("1IN SOA non-sp1 non-sp2(","^(\\d+)\\s+IN\\s+SOA\\s+(\\S+)\\s+(\\S+)\\s*\\(\\s*$",[trim]))),
    <<"1IN SOA non-sp1 non-sp2(">> = iolist_to_binary(join(re:split("1IN SOA non-sp1 non-sp2(","^(\\d+)\\s+IN\\s+SOA\\s+(\\S+)\\s+(\\S+)\\s*\\(\\s*$",[{parts,
                                                                                                                                                                                                                                                                                                                   2}]))),
    <<"1IN SOA non-sp1 non-sp2(">> = iolist_to_binary(join(re:split("1IN SOA non-sp1 non-sp2(","^(\\d+)\\s+IN\\s+SOA\\s+(\\S+)\\s+(\\S+)\\s*\\(\\s*$",[]))),
    <<"">> = iolist_to_binary(join(re:split("a.","^[a-zA-Z\\d][a-zA-Z\\d\\-]*(\\.[a-zA-Z\\d][a-zA-z\\d\\-]*)*\\.$",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("a.","^[a-zA-Z\\d][a-zA-Z\\d\\-]*(\\.[a-zA-Z\\d][a-zA-z\\d\\-]*)*\\.$",[{parts,
                                                                                                                                                                                                                                                                                           2}]))),
    <<"::">> = iolist_to_binary(join(re:split("a.","^[a-zA-Z\\d][a-zA-Z\\d\\-]*(\\.[a-zA-Z\\d][a-zA-z\\d\\-]*)*\\.$",[]))),
    <<"">> = iolist_to_binary(join(re:split("Z.","^[a-zA-Z\\d][a-zA-Z\\d\\-]*(\\.[a-zA-Z\\d][a-zA-z\\d\\-]*)*\\.$",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("Z.","^[a-zA-Z\\d][a-zA-Z\\d\\-]*(\\.[a-zA-Z\\d][a-zA-z\\d\\-]*)*\\.$",[{parts,
                                                                                                                                                                                                                                                                                           2}]))),
    <<"::">> = iolist_to_binary(join(re:split("Z.","^[a-zA-Z\\d][a-zA-Z\\d\\-]*(\\.[a-zA-Z\\d][a-zA-z\\d\\-]*)*\\.$",[]))),
    <<"">> = iolist_to_binary(join(re:split("2.","^[a-zA-Z\\d][a-zA-Z\\d\\-]*(\\.[a-zA-Z\\d][a-zA-z\\d\\-]*)*\\.$",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("2.","^[a-zA-Z\\d][a-zA-Z\\d\\-]*(\\.[a-zA-Z\\d][a-zA-z\\d\\-]*)*\\.$",[{parts,
                                                                                                                                                                                                                                                                                           2}]))),
    <<"::">> = iolist_to_binary(join(re:split("2.","^[a-zA-Z\\d][a-zA-Z\\d\\-]*(\\.[a-zA-Z\\d][a-zA-z\\d\\-]*)*\\.$",[]))),
    <<":.pq-r">> = iolist_to_binary(join(re:split("ab-c.pq-r.","^[a-zA-Z\\d][a-zA-Z\\d\\-]*(\\.[a-zA-Z\\d][a-zA-z\\d\\-]*)*\\.$",[trim]))),
    <<":.pq-r:">> = iolist_to_binary(join(re:split("ab-c.pq-r.","^[a-zA-Z\\d][a-zA-Z\\d\\-]*(\\.[a-zA-Z\\d][a-zA-z\\d\\-]*)*\\.$",[{parts,
                                                                                                                                                                                                                                                                                                           2}]))),
    <<":.pq-r:">> = iolist_to_binary(join(re:split("ab-c.pq-r.","^[a-zA-Z\\d][a-zA-Z\\d\\-]*(\\.[a-zA-Z\\d][a-zA-z\\d\\-]*)*\\.$",[]))),
    <<":.uk">> = iolist_to_binary(join(re:split("sxk.zzz.ac.uk.","^[a-zA-Z\\d][a-zA-Z\\d\\-]*(\\.[a-zA-Z\\d][a-zA-z\\d\\-]*)*\\.$",[trim]))),
    <<":.uk:">> = iolist_to_binary(join(re:split("sxk.zzz.ac.uk.","^[a-zA-Z\\d][a-zA-Z\\d\\-]*(\\.[a-zA-Z\\d][a-zA-z\\d\\-]*)*\\.$",[{parts,
                                                                                                                                                                                                                                                                                                                   2}]))),
    <<":.uk:">> = iolist_to_binary(join(re:split("sxk.zzz.ac.uk.","^[a-zA-Z\\d][a-zA-Z\\d\\-]*(\\.[a-zA-Z\\d][a-zA-z\\d\\-]*)*\\.$",[]))),
    <<":.y-">> = iolist_to_binary(join(re:split("x-.y-.","^[a-zA-Z\\d][a-zA-Z\\d\\-]*(\\.[a-zA-Z\\d][a-zA-z\\d\\-]*)*\\.$",[trim]))),
    <<":.y-:">> = iolist_to_binary(join(re:split("x-.y-.","^[a-zA-Z\\d][a-zA-Z\\d\\-]*(\\.[a-zA-Z\\d][a-zA-z\\d\\-]*)*\\.$",[{parts,
                                                                                                                                                                                                                                                                                                   2}]))),
    <<":.y-:">> = iolist_to_binary(join(re:split("x-.y-.","^[a-zA-Z\\d][a-zA-Z\\d\\-]*(\\.[a-zA-Z\\d][a-zA-z\\d\\-]*)*\\.$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[a-zA-Z\\d][a-zA-Z\\d\\-]*(\\.[a-zA-Z\\d][a-zA-z\\d\\-]*)*\\.$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[a-zA-Z\\d][a-zA-Z\\d\\-]*(\\.[a-zA-Z\\d][a-zA-z\\d\\-]*)*\\.$",[{parts,
                                                                                                                                                                                                                                                                                                             2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[a-zA-Z\\d][a-zA-Z\\d\\-]*(\\.[a-zA-Z\\d][a-zA-z\\d\\-]*)*\\.$",[]))),
    <<"-abc.peq.">> = iolist_to_binary(join(re:split("-abc.peq.","^[a-zA-Z\\d][a-zA-Z\\d\\-]*(\\.[a-zA-Z\\d][a-zA-z\\d\\-]*)*\\.$",[trim]))),
    <<"-abc.peq.">> = iolist_to_binary(join(re:split("-abc.peq.","^[a-zA-Z\\d][a-zA-Z\\d\\-]*(\\.[a-zA-Z\\d][a-zA-z\\d\\-]*)*\\.$",[{parts,
                                                                                                                                                                                                                                                                                                         2}]))),
    <<"-abc.peq.">> = iolist_to_binary(join(re:split("-abc.peq.","^[a-zA-Z\\d][a-zA-Z\\d\\-]*(\\.[a-zA-Z\\d][a-zA-z\\d\\-]*)*\\.$",[]))),
    <<"">> = iolist_to_binary(join(re:split("*.a","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[trim]))),
    <<"::::">> = iolist_to_binary(join(re:split("*.a","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[{parts,
                                                                                                                                                                                                                                                                                                                2}]))),
    <<"::::">> = iolist_to_binary(join(re:split("*.a","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[]))),
    <<":0-a">> = iolist_to_binary(join(re:split("*.b0-a","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[trim]))),
    <<":0-a:::">> = iolist_to_binary(join(re:split("*.b0-a","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[{parts,
                                                                                                                                                                                                                                                                                                                      2}]))),
    <<":0-a:::">> = iolist_to_binary(join(re:split("*.b0-a","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[]))),
    <<":3-b:.c">> = iolist_to_binary(join(re:split("*.c3-b.c","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[trim]))),
    <<":3-b:.c::">> = iolist_to_binary(join(re:split("*.c3-b.c","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[{parts,
                                                                                                                                                                                                                                                                                                                          2}]))),
    <<":3-b:.c::">> = iolist_to_binary(join(re:split("*.c3-b.c","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[]))),
    <<":-a:.b-c:-c">> = iolist_to_binary(join(re:split("*.c-a.b-c","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[trim]))),
    <<":-a:.b-c:-c:">> = iolist_to_binary(join(re:split("*.c-a.b-c","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[{parts,
                                                                                                                                                                                                                                                                                                                            2}]))),
    <<":-a:.b-c:-c:">> = iolist_to_binary(join(re:split("*.c-a.b-c","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[{parts,
                                                                                                                                                                                                                                                                                                                                2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[]))),
    <<"*.0">> = iolist_to_binary(join(re:split("*.0","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[trim]))),
    <<"*.0">> = iolist_to_binary(join(re:split("*.0","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[{parts,
                                                                                                                                                                                                                                                                                                                2}]))),
    <<"*.0">> = iolist_to_binary(join(re:split("*.0","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[]))),
    <<"*.a-">> = iolist_to_binary(join(re:split("*.a-","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[trim]))),
    <<"*.a-">> = iolist_to_binary(join(re:split("*.a-","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[{parts,
                                                                                                                                                                                                                                                                                                                  2}]))),
    <<"*.a-">> = iolist_to_binary(join(re:split("*.a-","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[]))),
    <<"*.a-b.c-">> = iolist_to_binary(join(re:split("*.a-b.c-","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[trim]))),
    <<"*.a-b.c-">> = iolist_to_binary(join(re:split("*.a-b.c-","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[{parts,
                                                                                                                                                                                                                                                                                                                          2}]))),
    <<"*.a-b.c-">> = iolist_to_binary(join(re:split("*.a-b.c-","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[]))),
    <<"*.c-a.0-c">> = iolist_to_binary(join(re:split("*.c-a.0-c","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[trim]))),
    <<"*.c-a.0-c">> = iolist_to_binary(join(re:split("*.c-a.0-c","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[{parts,
                                                                                                                                                                                                                                                                                                                            2}]))),
    <<"*.c-a.0-c">> = iolist_to_binary(join(re:split("*.c-a.0-c","^\\*\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?(\\.[a-z]([a-z\\-\\d]*[a-z\\d]+)?)*$",[]))),
    <<":de:abd:e">> = iolist_to_binary(join(re:split("abde","^(?=ab(de))(abd)(e)",[trim]))),
    <<":de:abd:e:">> = iolist_to_binary(join(re:split("abde","^(?=ab(de))(abd)(e)",[{parts,
                                                                                                                                                                                              2}]))),
    <<":de:abd:e:">> = iolist_to_binary(join(re:split("abde","^(?=ab(de))(abd)(e)",[]))),
    <<"::abd:f">> = iolist_to_binary(join(re:split("abdf","^(?!(ab)de|x)(abd)(f)",[trim]))),
    <<"::abd:f:">> = iolist_to_binary(join(re:split("abdf","^(?!(ab)de|x)(abd)(f)",[{parts,
                                                                                                                                                                                                  2}]))),
    <<"::abd:f:">> = iolist_to_binary(join(re:split("abdf","^(?!(ab)de|x)(abd)(f)",[]))),
    <<":abcd:cd:ab:cd">> = iolist_to_binary(join(re:split("abcd","^(?=(ab(cd)))(ab)",[trim]))),
    <<":abcd:cd:ab:cd">> = iolist_to_binary(join(re:split("abcd","^(?=(ab(cd)))(ab)",[{parts,
                                                                                                                                                                                          2}]))),
    <<":abcd:cd:ab:cd">> = iolist_to_binary(join(re:split("abcd","^(?=(ab(cd)))(ab)",[]))),
    <<":.d">> = iolist_to_binary(join(re:split("a.b.c.d","^[\\da-f](\\.[\\da-f])*$",[caseless,
                                                                                                                                                                                                                trim]))),
    <<":.d:">> = iolist_to_binary(join(re:split("a.b.c.d","^[\\da-f](\\.[\\da-f])*$",[caseless,
                                                                                                                                                                                                                  {parts,
                                                                                                                                                                                                                   2}]))),
    <<":.d:">> = iolist_to_binary(join(re:split("a.b.c.d","^[\\da-f](\\.[\\da-f])*$",[caseless]))),
    <<":.D">> = iolist_to_binary(join(re:split("A.B.C.D","^[\\da-f](\\.[\\da-f])*$",[caseless,
                                                                                                                                                                                                                trim]))),
    <<":.D:">> = iolist_to_binary(join(re:split("A.B.C.D","^[\\da-f](\\.[\\da-f])*$",[caseless,
                                                                                                                                                                                                                  {parts,
                                                                                                                                                                                                                   2}]))),
    <<":.D:">> = iolist_to_binary(join(re:split("A.B.C.D","^[\\da-f](\\.[\\da-f])*$",[caseless]))),
    <<":.C">> = iolist_to_binary(join(re:split("a.b.c.1.2.3.C","^[\\da-f](\\.[\\da-f])*$",[caseless,
                                                                                                                                                                                                                            trim]))),
    <<":.C:">> = iolist_to_binary(join(re:split("a.b.c.1.2.3.C","^[\\da-f](\\.[\\da-f])*$",[caseless,
                                                                                                                                                                                                                              {parts,
                                                                                                                                                                                                                               2}]))),
    <<":.C:">> = iolist_to_binary(join(re:split("a.b.c.1.2.3.C","^[\\da-f](\\.[\\da-f])*$",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("\"1234\"","^\\\".*\\\"\\s*(;.*)?$",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("\"1234\"","^\\\".*\\\"\\s*(;.*)?$",[{parts,
                                                                                                                                                                                                                      2}]))),
    <<"::">> = iolist_to_binary(join(re:split("\"1234\"","^\\\".*\\\"\\s*(;.*)?$",[]))),
    <<":;">> = iolist_to_binary(join(re:split("\"abcd\" ;","^\\\".*\\\"\\s*(;.*)?$",[trim]))),
    <<":;:">> = iolist_to_binary(join(re:split("\"abcd\" ;","^\\\".*\\\"\\s*(;.*)?$",[{parts,
                                                                                                                                                                                                                          2}]))),
    <<":;:">> = iolist_to_binary(join(re:split("\"abcd\" ;","^\\\".*\\\"\\s*(;.*)?$",[]))),
    <<":; rhubarb">> = iolist_to_binary(join(re:split("\"\" ; rhubarb","^\\\".*\\\"\\s*(;.*)?$",[trim]))),
    <<":; rhubarb:">> = iolist_to_binary(join(re:split("\"\" ; rhubarb","^\\\".*\\\"\\s*(;.*)?$",[{parts,
                                                                                                                                                                                                                                  2}]))),
    <<":; rhubarb:">> = iolist_to_binary(join(re:split("\"\" ; rhubarb","^\\\".*\\\"\\s*(;.*)?$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^\\\".*\\\"\\s*(;.*)?$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^\\\".*\\\"\\s*(;.*)?$",[{parts,
                                                                                                                                                                                                                        2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^\\\".*\\\"\\s*(;.*)?$",[]))),
    <<"\"1234\" : things">> = iolist_to_binary(join(re:split("\"1234\" : things","^\\\".*\\\"\\s*(;.*)?$",[trim]))),
    <<"\"1234\" : things">> = iolist_to_binary(join(re:split("\"1234\" : things","^\\\".*\\\"\\s*(;.*)?$",[{parts,
                                                                                                                                                                                                                                        2}]))),
    <<"\"1234\" : things">> = iolist_to_binary(join(re:split("\"1234\" : things","^\\\".*\\\"\\s*(;.*)?$",[]))),
    <<"">> = iolist_to_binary(join(re:split("","^$",[trim]))),
    <<"">> = iolist_to_binary(join(re:split("","^$",[{parts,
                                                                                                                                                     2}]))),
    <<"">> = iolist_to_binary(join(re:split("","^$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^$",[{parts,
                                                                                                                                                                           2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^$",[]))),
    <<"">> = iolist_to_binary(join(re:split("ab c","   ^    a   (?# begins with a)  b\\sc (?# then b c) $ (?# then end)",[extended,
                                                                                                                                                                                                                                                                                              trim]))),
    <<":">> = iolist_to_binary(join(re:split("ab c","   ^    a   (?# begins with a)  b\\sc (?# then b c) $ (?# then end)",[extended,
                                                                                                                                                                                                                                                                                                {parts,
                                                                                                                                                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("ab c","   ^    a   (?# begins with a)  b\\sc (?# then b c) $ (?# then end)",[extended]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","   ^    a   (?# begins with a)  b\\sc (?# then b c) $ (?# then end)",[extended,
                                                                                                                                                                                                                                                                                                            trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","   ^    a   (?# begins with a)  b\\sc (?# then b c) $ (?# then end)",[extended,
                                                                                                                                                                                                                                                                                                              {parts,
                                                                                                                                                                                                                                                                                                               2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","   ^    a   (?# begins with a)  b\\sc (?# then b c) $ (?# then end)",[extended]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","   ^    a   (?# begins with a)  b\\sc (?# then b c) $ (?# then end)",[extended,
                                                                                                                                                                                                                                                                                            trim]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","   ^    a   (?# begins with a)  b\\sc (?# then b c) $ (?# then end)",[extended,
                                                                                                                                                                                                                                                                                              {parts,
                                                                                                                                                                                                                                                                                               2}]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","   ^    a   (?# begins with a)  b\\sc (?# then b c) $ (?# then end)",[extended]))),
    <<"ab cde">> = iolist_to_binary(join(re:split("ab cde","   ^    a   (?# begins with a)  b\\sc (?# then b c) $ (?# then end)",[extended,
                                                                                                                                                                                                                                                                                                  trim]))),
    <<"ab cde">> = iolist_to_binary(join(re:split("ab cde","   ^    a   (?# begins with a)  b\\sc (?# then b c) $ (?# then end)",[extended,
                                                                                                                                                                                                                                                                                                    {parts,
                                                                                                                                                                                                                                                                                                     2}]))),
    <<"ab cde">> = iolist_to_binary(join(re:split("ab cde","   ^    a   (?# begins with a)  b\\sc (?# then b c) $ (?# then end)",[extended]))),
    <<"">> = iolist_to_binary(join(re:split("ab c","(?x)   ^    a   (?# begins with a)  b\\sc (?# then b c) $ (?# then end)",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("ab c","(?x)   ^    a   (?# begins with a)  b\\sc (?# then b c) $ (?# then end)",[{parts,
                                                                                                                                                                                                                                                                                                        2}]))),
    <<":">> = iolist_to_binary(join(re:split("ab c","(?x)   ^    a   (?# begins with a)  b\\sc (?# then b c) $ (?# then end)",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?x)   ^    a   (?# begins with a)  b\\sc (?# then b c) $ (?# then end)",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?x)   ^    a   (?# begins with a)  b\\sc (?# then b c) $ (?# then end)",[{parts,
                                                                                                                                                                                                                                                                                                                      2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?x)   ^    a   (?# begins with a)  b\\sc (?# then b c) $ (?# then end)",[]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(?x)   ^    a   (?# begins with a)  b\\sc (?# then b c) $ (?# then end)",[trim]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(?x)   ^    a   (?# begins with a)  b\\sc (?# then b c) $ (?# then end)",[{parts,
                                                                                                                                                                                                                                                                                                      2}]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(?x)   ^    a   (?# begins with a)  b\\sc (?# then b c) $ (?# then end)",[]))),
    <<"ab cde">> = iolist_to_binary(join(re:split("ab cde","(?x)   ^    a   (?# begins with a)  b\\sc (?# then b c) $ (?# then end)",[trim]))),
    <<"ab cde">> = iolist_to_binary(join(re:split("ab cde","(?x)   ^    a   (?# begins with a)  b\\sc (?# then b c) $ (?# then end)",[{parts,
                                                                                                                                                                                                                                                                                                            2}]))),
    <<"ab cde">> = iolist_to_binary(join(re:split("ab cde","(?x)   ^    a   (?# begins with a)  b\\sc (?# then b c) $ (?# then end)",[]))),
    <<"">> = iolist_to_binary(join(re:split("a bcd","^   a\\ b[c ]d       $",[extended,
                                                                                                                                                                                                      trim]))),
    <<":">> = iolist_to_binary(join(re:split("a bcd","^   a\\ b[c ]d       $",[extended,
                                                                                                                                                                                                        {parts,
                                                                                                                                                                                                         2}]))),
    <<":">> = iolist_to_binary(join(re:split("a bcd","^   a\\ b[c ]d       $",[extended]))),
    <<"">> = iolist_to_binary(join(re:split("a b d","^   a\\ b[c ]d       $",[extended,
                                                                                                                                                                                                      trim]))),
    <<":">> = iolist_to_binary(join(re:split("a b d","^   a\\ b[c ]d       $",[extended,
                                                                                                                                                                                                        {parts,
                                                                                                                                                                                                         2}]))),
    <<":">> = iolist_to_binary(join(re:split("a b d","^   a\\ b[c ]d       $",[extended]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^   a\\ b[c ]d       $",[extended,
                                                                                                                                                                                                                  trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^   a\\ b[c ]d       $",[extended,
                                                                                                                                                                                                                    {parts,
                                                                                                                                                                                                                     2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^   a\\ b[c ]d       $",[extended]))),
    <<"abcd">> = iolist_to_binary(join(re:split("abcd","^   a\\ b[c ]d       $",[extended,
                                                                                                                                                                                                    trim]))),
    <<"abcd">> = iolist_to_binary(join(re:split("abcd","^   a\\ b[c ]d       $",[extended,
                                                                                                                                                                                                      {parts,
                                                                                                                                                                                                       2}]))),
    <<"abcd">> = iolist_to_binary(join(re:split("abcd","^   a\\ b[c ]d       $",[extended]))),
    <<"ab d">> = iolist_to_binary(join(re:split("ab d","^   a\\ b[c ]d       $",[extended,
                                                                                                                                                                                                    trim]))),
    <<"ab d">> = iolist_to_binary(join(re:split("ab d","^   a\\ b[c ]d       $",[extended,
                                                                                                                                                                                                      {parts,
                                                                                                                                                                                                       2}]))),
    <<"ab d">> = iolist_to_binary(join(re:split("ab d","^   a\\ b[c ]d       $",[extended]))),
    <<":abc:bc:c:def:ef:f:hij:ij:j:klm:lm:m">> = iolist_to_binary(join(re:split("abcdefhijklm","^(a(b(c)))(d(e(f)))(h(i(j)))(k(l(m)))$",[trim]))),
    <<":abc:bc:c:def:ef:f:hij:ij:j:klm:lm:m:">> = iolist_to_binary(join(re:split("abcdefhijklm","^(a(b(c)))(d(e(f)))(h(i(j)))(k(l(m)))$",[{parts,
                                                                                                                                                                                                                                                     2}]))),
    <<":abc:bc:c:def:ef:f:hij:ij:j:klm:lm:m:">> = iolist_to_binary(join(re:split("abcdefhijklm","^(a(b(c)))(d(e(f)))(h(i(j)))(k(l(m)))$",[]))),
    ok.
run2() ->
    <<":bc:c:ef:f:ij:j:lm:m">> = iolist_to_binary(join(re:split("abcdefhijklm","^(?:a(b(c)))(?:d(e(f)))(?:h(i(j)))(?:k(l(m)))$",[trim]))),
    <<":bc:c:ef:f:ij:j:lm:m:">> = iolist_to_binary(join(re:split("abcdefhijklm","^(?:a(b(c)))(?:d(e(f)))(?:h(i(j)))(?:k(l(m)))$",[{parts,
                                                                                                                                                                                                                                                                     2}]))),
    <<":bc:c:ef:f:ij:j:lm:m:">> = iolist_to_binary(join(re:split("abcdefhijklm","^(?:a(b(c)))(?:d(e(f)))(?:h(i(j)))(?:k(l(m)))$",[]))),
    <<"">> = iolist_to_binary(join(re:split("a+ Z0+
","^[\\w][\\W][\\s][\\S][\\d][\\D][\\b][\\n][\\c]][\\022]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a+ Z0+
","^[\\w][\\W][\\s][\\S][\\d][\\D][\\b][\\n][\\c]][\\022]",[{parts,
                                                                                      2}]))),
    <<":">> = iolist_to_binary(join(re:split("a+ Z0+
","^[\\w][\\W][\\s][\\S][\\d][\\D][\\b][\\n][\\c]][\\022]",[]))),
    <<"">> = iolist_to_binary(join(re:split(".^$(*+)|{?,?}","^[.^$|()*+?{,}]+",[trim]))),
    <<":">> = iolist_to_binary(join(re:split(".^$(*+)|{?,?}","^[.^$|()*+?{,}]+",[{parts,
                                                                                                                                                                                                             2}]))),
    <<":">> = iolist_to_binary(join(re:split(".^$(*+)|{?,?}","^[.^$|()*+?{,}]+",[]))),
    <<"">> = iolist_to_binary(join(re:split("z","^a*\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("z","^a*\\w",[{parts,
                                                                                                                                                               2}]))),
    <<":">> = iolist_to_binary(join(re:split("z","^a*\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("az","^a*\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("az","^a*\\w",[{parts,
                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("az","^a*\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaz","^a*\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaz","^a*\\w",[{parts,
                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaz","^a*\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","^a*\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a","^a*\\w",[{parts,
                                                                                                                                                               2}]))),
    <<":">> = iolist_to_binary(join(re:split("a","^a*\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("aa","^a*\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aa","^a*\\w",[{parts,
                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("aa","^a*\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaa","^a*\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaa","^a*\\w",[{parts,
                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaa","^a*\\w",[]))),
    <<":+">> = iolist_to_binary(join(re:split("a+","^a*\\w",[trim]))),
    <<":+">> = iolist_to_binary(join(re:split("a+","^a*\\w",[{parts,
                                                                                                                                                                 2}]))),
    <<":+">> = iolist_to_binary(join(re:split("a+","^a*\\w",[]))),
    <<":+">> = iolist_to_binary(join(re:split("aa+","^a*\\w",[trim]))),
    <<":+">> = iolist_to_binary(join(re:split("aa+","^a*\\w",[{parts,
                                                                                                                                                                   2}]))),
    <<":+">> = iolist_to_binary(join(re:split("aa+","^a*\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("z","^a*?\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("z","^a*?\\w",[{parts,
                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("z","^a*?\\w",[]))),
    <<":z">> = iolist_to_binary(join(re:split("az","^a*?\\w",[trim]))),
    <<":z">> = iolist_to_binary(join(re:split("az","^a*?\\w",[{parts,
                                                                                                                                                                   2}]))),
    <<":z">> = iolist_to_binary(join(re:split("az","^a*?\\w",[]))),
    <<":aaz">> = iolist_to_binary(join(re:split("aaaz","^a*?\\w",[trim]))),
    <<":aaz">> = iolist_to_binary(join(re:split("aaaz","^a*?\\w",[{parts,
                                                                                                                                                                       2}]))),
    <<":aaz">> = iolist_to_binary(join(re:split("aaaz","^a*?\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","^a*?\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a","^a*?\\w",[{parts,
                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("a","^a*?\\w",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aa","^a*?\\w",[trim]))),
    <<":a">> = iolist_to_binary(join(re:split("aa","^a*?\\w",[{parts,
                                                                                                                                                                   2}]))),
    <<":a">> = iolist_to_binary(join(re:split("aa","^a*?\\w",[]))),
    <<":aaa">> = iolist_to_binary(join(re:split("aaaa","^a*?\\w",[trim]))),
    <<":aaa">> = iolist_to_binary(join(re:split("aaaa","^a*?\\w",[{parts,
                                                                                                                                                                       2}]))),
    <<":aaa">> = iolist_to_binary(join(re:split("aaaa","^a*?\\w",[]))),
    <<":+">> = iolist_to_binary(join(re:split("a+","^a*?\\w",[trim]))),
    <<":+">> = iolist_to_binary(join(re:split("a+","^a*?\\w",[{parts,
                                                                                                                                                                   2}]))),
    <<":+">> = iolist_to_binary(join(re:split("a+","^a*?\\w",[]))),
    <<":a+">> = iolist_to_binary(join(re:split("aa+","^a*?\\w",[trim]))),
    <<":a+">> = iolist_to_binary(join(re:split("aa+","^a*?\\w",[{parts,
                                                                                                                                                                     2}]))),
    <<":a+">> = iolist_to_binary(join(re:split("aa+","^a*?\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("az","^a+\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("az","^a+\\w",[{parts,
                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("az","^a+\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaz","^a+\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaz","^a+\\w",[{parts,
                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaz","^a+\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("aa","^a+\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aa","^a+\\w",[{parts,
                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("aa","^a+\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaa","^a+\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaa","^a+\\w",[{parts,
                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaa","^a+\\w",[]))),
    <<":+">> = iolist_to_binary(join(re:split("aa+","^a+\\w",[trim]))),
    <<":+">> = iolist_to_binary(join(re:split("aa+","^a+\\w",[{parts,
                                                                                                                                                                   2}]))),
    <<":+">> = iolist_to_binary(join(re:split("aa+","^a+\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("az","^a+?\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("az","^a+?\\w",[{parts,
                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("az","^a+?\\w",[]))),
    <<":az">> = iolist_to_binary(join(re:split("aaaz","^a+?\\w",[trim]))),
    <<":az">> = iolist_to_binary(join(re:split("aaaz","^a+?\\w",[{parts,
                                                                                                                                                                       2}]))),
    <<":az">> = iolist_to_binary(join(re:split("aaaz","^a+?\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("aa","^a+?\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aa","^a+?\\w",[{parts,
                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("aa","^a+?\\w",[]))),
    <<":aa">> = iolist_to_binary(join(re:split("aaaa","^a+?\\w",[trim]))),
    <<":aa">> = iolist_to_binary(join(re:split("aaaa","^a+?\\w",[{parts,
                                                                                                                                                                       2}]))),
    <<":aa">> = iolist_to_binary(join(re:split("aaaa","^a+?\\w",[]))),
    <<":+">> = iolist_to_binary(join(re:split("aa+","^a+?\\w",[trim]))),
    <<":+">> = iolist_to_binary(join(re:split("aa+","^a+?\\w",[{parts,
                                                                                                                                                                     2}]))),
    <<":+">> = iolist_to_binary(join(re:split("aa+","^a+?\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("1234567890","^\\d{8}\\w{2,}",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("1234567890","^\\d{8}\\w{2,}",[{parts,
                                                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("1234567890","^\\d{8}\\w{2,}",[]))),
    <<"">> = iolist_to_binary(join(re:split("12345678ab","^\\d{8}\\w{2,}",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("12345678ab","^\\d{8}\\w{2,}",[{parts,
                                                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("12345678ab","^\\d{8}\\w{2,}",[]))),
    <<"">> = iolist_to_binary(join(re:split("12345678__","^\\d{8}\\w{2,}",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("12345678__","^\\d{8}\\w{2,}",[{parts,
                                                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("12345678__","^\\d{8}\\w{2,}",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^\\d{8}\\w{2,}",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^\\d{8}\\w{2,}",[{parts,
                                                                                                                                                                                                    2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^\\d{8}\\w{2,}",[]))),
    <<"1234567">> = iolist_to_binary(join(re:split("1234567","^\\d{8}\\w{2,}",[trim]))),
    <<"1234567">> = iolist_to_binary(join(re:split("1234567","^\\d{8}\\w{2,}",[{parts,
                                                                                                                                                                                            2}]))),
    <<"1234567">> = iolist_to_binary(join(re:split("1234567","^\\d{8}\\w{2,}",[]))),
    <<"">> = iolist_to_binary(join(re:split("uoie","^[aeiou\\d]{4,5}$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("uoie","^[aeiou\\d]{4,5}$",[{parts,
                                                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("uoie","^[aeiou\\d]{4,5}$",[]))),
    <<"">> = iolist_to_binary(join(re:split("1234","^[aeiou\\d]{4,5}$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("1234","^[aeiou\\d]{4,5}$",[{parts,
                                                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("1234","^[aeiou\\d]{4,5}$",[]))),
    <<"">> = iolist_to_binary(join(re:split("12345","^[aeiou\\d]{4,5}$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("12345","^[aeiou\\d]{4,5}$",[{parts,
                                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("12345","^[aeiou\\d]{4,5}$",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaaa","^[aeiou\\d]{4,5}$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaaa","^[aeiou\\d]{4,5}$",[{parts,
                                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaaa","^[aeiou\\d]{4,5}$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[aeiou\\d]{4,5}$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[aeiou\\d]{4,5}$",[{parts,
                                                                                                                                                                                                          2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[aeiou\\d]{4,5}$",[]))),
    <<"123456">> = iolist_to_binary(join(re:split("123456","^[aeiou\\d]{4,5}$",[trim]))),
    <<"123456">> = iolist_to_binary(join(re:split("123456","^[aeiou\\d]{4,5}$",[{parts,
                                                                                                                                                                                                2}]))),
    <<"123456">> = iolist_to_binary(join(re:split("123456","^[aeiou\\d]{4,5}$",[]))),
    <<"">> = iolist_to_binary(join(re:split("uoie","^[aeiou\\d]{4,5}?",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("uoie","^[aeiou\\d]{4,5}?",[{parts,
                                                                                                                                                                                           2}]))),
    <<":">> = iolist_to_binary(join(re:split("uoie","^[aeiou\\d]{4,5}?",[]))),
    <<"">> = iolist_to_binary(join(re:split("1234","^[aeiou\\d]{4,5}?",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("1234","^[aeiou\\d]{4,5}?",[{parts,
                                                                                                                                                                                           2}]))),
    <<":">> = iolist_to_binary(join(re:split("1234","^[aeiou\\d]{4,5}?",[]))),
    <<":5">> = iolist_to_binary(join(re:split("12345","^[aeiou\\d]{4,5}?",[trim]))),
    <<":5">> = iolist_to_binary(join(re:split("12345","^[aeiou\\d]{4,5}?",[{parts,
                                                                                                                                                                                             2}]))),
    <<":5">> = iolist_to_binary(join(re:split("12345","^[aeiou\\d]{4,5}?",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aaaaa","^[aeiou\\d]{4,5}?",[trim]))),
    <<":a">> = iolist_to_binary(join(re:split("aaaaa","^[aeiou\\d]{4,5}?",[{parts,
                                                                                                                                                                                             2}]))),
    <<":a">> = iolist_to_binary(join(re:split("aaaaa","^[aeiou\\d]{4,5}?",[]))),
    <<":56">> = iolist_to_binary(join(re:split("123456","^[aeiou\\d]{4,5}?",[trim]))),
    <<":56">> = iolist_to_binary(join(re:split("123456","^[aeiou\\d]{4,5}?",[{parts,
                                                                                                                                                                                               2}]))),
    <<":56">> = iolist_to_binary(join(re:split("123456","^[aeiou\\d]{4,5}?",[]))),
    <<":abc:abc">> = iolist_to_binary(join(re:split("abc=abcabc","\\A(abc|def)=(\\1){2,3}\\Z",[trim]))),
    <<":abc:abc:">> = iolist_to_binary(join(re:split("abc=abcabc","\\A(abc|def)=(\\1){2,3}\\Z",[{parts,
                                                                                                                                                                                                                           2}]))),
    <<":abc:abc:">> = iolist_to_binary(join(re:split("abc=abcabc","\\A(abc|def)=(\\1){2,3}\\Z",[]))),
    <<":def:def">> = iolist_to_binary(join(re:split("def=defdefdef","\\A(abc|def)=(\\1){2,3}\\Z",[trim]))),
    <<":def:def:">> = iolist_to_binary(join(re:split("def=defdefdef","\\A(abc|def)=(\\1){2,3}\\Z",[{parts,
                                                                                                                                                                                                                                 2}]))),
    <<":def:def:">> = iolist_to_binary(join(re:split("def=defdefdef","\\A(abc|def)=(\\1){2,3}\\Z",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\A(abc|def)=(\\1){2,3}\\Z",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\A(abc|def)=(\\1){2,3}\\Z",[{parts,
                                                                                                                                                                                                                             2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\A(abc|def)=(\\1){2,3}\\Z",[]))),
    <<"abc=defdef">> = iolist_to_binary(join(re:split("abc=defdef","\\A(abc|def)=(\\1){2,3}\\Z",[trim]))),
    <<"abc=defdef">> = iolist_to_binary(join(re:split("abc=defdef","\\A(abc|def)=(\\1){2,3}\\Z",[{parts,
                                                                                                                                                                                                                           2}]))),
    <<"abc=defdef">> = iolist_to_binary(join(re:split("abc=defdef","\\A(abc|def)=(\\1){2,3}\\Z",[]))),
    <<":a:b:c:d:e:f:g:h:i:j:k:cd">> = iolist_to_binary(join(re:split("abcdefghijkcda2","^(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\\11*(\\3\\4)\\1(?#)2$",[trim]))),
    <<":a:b:c:d:e:f:g:h:i:j:k:cd:">> = iolist_to_binary(join(re:split("abcdefghijkcda2","^(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\\11*(\\3\\4)\\1(?#)2$",[{parts,
                                                                                                                                                                                                                                                                                                   2}]))),
    <<":a:b:c:d:e:f:g:h:i:j:k:cd:">> = iolist_to_binary(join(re:split("abcdefghijkcda2","^(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\\11*(\\3\\4)\\1(?#)2$",[]))),
    <<":a:b:c:d:e:f:g:h:i:j:k:cd">> = iolist_to_binary(join(re:split("abcdefghijkkkkcda2","^(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\\11*(\\3\\4)\\1(?#)2$",[trim]))),
    <<":a:b:c:d:e:f:g:h:i:j:k:cd:">> = iolist_to_binary(join(re:split("abcdefghijkkkkcda2","^(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\\11*(\\3\\4)\\1(?#)2$",[{parts,
                                                                                                                                                                                                                                                                                                         2}]))),
    <<":a:b:c:d:e:f:g:h:i:j:k:cd:">> = iolist_to_binary(join(re:split("abcdefghijkkkkcda2","^(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\\11*(\\3\\4)\\1(?#)2$",[]))),
    <<":cataract:aract:ract::3">> = iolist_to_binary(join(re:split("cataract cataract23","(cat(a(ract|tonic)|erpillar)) \\1()2(3)",[trim]))),
    <<":cataract:aract:ract::3:">> = iolist_to_binary(join(re:split("cataract cataract23","(cat(a(ract|tonic)|erpillar)) \\1()2(3)",[{parts,
                                                                                                                                                                                                                                                                     2}]))),
    <<":cataract:aract:ract::3:">> = iolist_to_binary(join(re:split("cataract cataract23","(cat(a(ract|tonic)|erpillar)) \\1()2(3)",[]))),
    <<":catatonic:atonic:tonic::3">> = iolist_to_binary(join(re:split("catatonic catatonic23","(cat(a(ract|tonic)|erpillar)) \\1()2(3)",[trim]))),
    <<":catatonic:atonic:tonic::3:">> = iolist_to_binary(join(re:split("catatonic catatonic23","(cat(a(ract|tonic)|erpillar)) \\1()2(3)",[{parts,
                                                                                                                                                                                                                                                                         2}]))),
    <<":catatonic:atonic:tonic::3:">> = iolist_to_binary(join(re:split("catatonic catatonic23","(cat(a(ract|tonic)|erpillar)) \\1()2(3)",[]))),
    <<":caterpillar:erpillar:::3">> = iolist_to_binary(join(re:split("caterpillar caterpillar23","(cat(a(ract|tonic)|erpillar)) \\1()2(3)",[trim]))),
    <<":caterpillar:erpillar:::3:">> = iolist_to_binary(join(re:split("caterpillar caterpillar23","(cat(a(ract|tonic)|erpillar)) \\1()2(3)",[{parts,
                                                                                                                                                                                                                                                                                 2}]))),
    <<":caterpillar:erpillar:::3:">> = iolist_to_binary(join(re:split("caterpillar caterpillar23","(cat(a(ract|tonic)|erpillar)) \\1()2(3)",[]))),
    <<":abcd::02 1997">> = iolist_to_binary(join(re:split("From abcd  Mon Sep 01 12:33:02 1997","^From +([^ ]+) +[a-zA-Z][a-zA-Z][a-zA-Z] +[a-zA-Z][a-zA-Z][a-zA-Z] +[0-9]?[0-9] +[0-9][0-9]:[0-9][0-9]",[trim]))),
    <<":abcd::02 1997">> = iolist_to_binary(join(re:split("From abcd  Mon Sep 01 12:33:02 1997","^From +([^ ]+) +[a-zA-Z][a-zA-Z][a-zA-Z] +[a-zA-Z][a-zA-Z][a-zA-Z] +[0-9]?[0-9] +[0-9][0-9]:[0-9][0-9]",[{parts,
                                                                                                                                                                                                                                                                                                                                                                                                                                  2}]))),
    <<":abcd::02 1997">> = iolist_to_binary(join(re:split("From abcd  Mon Sep 01 12:33:02 1997","^From +([^ ]+) +[a-zA-Z][a-zA-Z][a-zA-Z] +[a-zA-Z][a-zA-Z][a-zA-Z] +[0-9]?[0-9] +[0-9][0-9]:[0-9][0-9]",[]))),
    <<":Sep ::02 1997">> = iolist_to_binary(join(re:split("From abcd  Mon Sep 01 12:33:02 1997","^From\\s+\\S+\\s+([a-zA-Z]{3}\\s+){2}\\d{1,2}\\s+\\d\\d:\\d\\d",[trim]))),
    <<":Sep ::02 1997">> = iolist_to_binary(join(re:split("From abcd  Mon Sep 01 12:33:02 1997","^From\\s+\\S+\\s+([a-zA-Z]{3}\\s+){2}\\d{1,2}\\s+\\d\\d:\\d\\d",[{parts,
                                                                                                                                                                                                                                                                                                                                                            2}]))),
    <<":Sep ::02 1997">> = iolist_to_binary(join(re:split("From abcd  Mon Sep 01 12:33:02 1997","^From\\s+\\S+\\s+([a-zA-Z]{3}\\s+){2}\\d{1,2}\\s+\\d\\d:\\d\\d",[]))),
    <<":Sep  ::02 1997">> = iolist_to_binary(join(re:split("From abcd  Mon Sep  1 12:33:02 1997","^From\\s+\\S+\\s+([a-zA-Z]{3}\\s+){2}\\d{1,2}\\s+\\d\\d:\\d\\d",[trim]))),
    <<":Sep  ::02 1997">> = iolist_to_binary(join(re:split("From abcd  Mon Sep  1 12:33:02 1997","^From\\s+\\S+\\s+([a-zA-Z]{3}\\s+){2}\\d{1,2}\\s+\\d\\d:\\d\\d",[{parts,
                                                                                                                                                                                                                                                                                                                                                            2}]))),
    <<":Sep  ::02 1997">> = iolist_to_binary(join(re:split("From abcd  Mon Sep  1 12:33:02 1997","^From\\s+\\S+\\s+([a-zA-Z]{3}\\s+){2}\\d{1,2}\\s+\\d\\d:\\d\\d",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^From\\s+\\S+\\s+([a-zA-Z]{3}\\s+){2}\\d{1,2}\\s+\\d\\d:\\d\\d",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^From\\s+\\S+\\s+([a-zA-Z]{3}\\s+){2}\\d{1,2}\\s+\\d\\d:\\d\\d",[{parts,
                                                                                                                                                                                                                                                                                                            2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^From\\s+\\S+\\s+([a-zA-Z]{3}\\s+){2}\\d{1,2}\\s+\\d\\d:\\d\\d",[]))),
    <<"From abcd  Sep 01 12:33:02 1997">> = iolist_to_binary(join(re:split("From abcd  Sep 01 12:33:02 1997","^From\\s+\\S+\\s+([a-zA-Z]{3}\\s+){2}\\d{1,2}\\s+\\d\\d:\\d\\d",[trim]))),
    <<"From abcd  Sep 01 12:33:02 1997">> = iolist_to_binary(join(re:split("From abcd  Sep 01 12:33:02 1997","^From\\s+\\S+\\s+([a-zA-Z]{3}\\s+){2}\\d{1,2}\\s+\\d\\d:\\d\\d",[{parts,
                                                                                                                                                                                                                                                                                                                                                    2}]))),
    <<"From abcd  Sep 01 12:33:02 1997">> = iolist_to_binary(join(re:split("From abcd  Sep 01 12:33:02 1997","^From\\s+\\S+\\s+([a-zA-Z]{3}\\s+){2}\\d{1,2}\\s+\\d\\d:\\d\\d",[]))),
    <<"">> = iolist_to_binary(join(re:split("12
34","^12.34",[dotall,trim]))),
    <<":">> = iolist_to_binary(join(re:split("12
34","^12.34",[dotall,{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("12
34","^12.34",[dotall]))),
    <<"">> = iolist_to_binary(join(re:split("12
34","^12.34",[dotall,
                                                                                                                                                                    trim]))),
    <<":">> = iolist_to_binary(join(re:split("12
34","^12.34",[dotall,
                                                                                                                                                                      {parts,
                                                                                                                                                                       2}]))),
    <<":">> = iolist_to_binary(join(re:split("12
34","^12.34",[dotall]))),
    <<"the quick :	 fox">> = iolist_to_binary(join(re:split("the quick brown	 fox","\\w+(?=\\t)",[trim]))),
    <<"the quick :	 fox">> = iolist_to_binary(join(re:split("the quick brown	 fox","\\w+(?=\\t)",[{parts,
                                                                                                                                                                                                                             2}]))),
    <<"the quick :	 fox">> = iolist_to_binary(join(re:split("the quick brown	 fox","\\w+(?=\\t)",[]))),
    <<"foobar is :lish see?">> = iolist_to_binary(join(re:split("foobar is foolish see?","foo(?!bar)(.*)",[trim]))),
    <<"foobar is :lish see?:">> = iolist_to_binary(join(re:split("foobar is foolish see?","foo(?!bar)(.*)",[{parts,
                                                                                                                                                                                                                        2}]))),
    <<"foobar is :lish see?:">> = iolist_to_binary(join(re:split("foobar is foolish see?","foo(?!bar)(.*)",[]))),
    <<"foobar c: etc">> = iolist_to_binary(join(re:split("foobar crowbar etc","(?:(?!foo)...|^.{0,2})bar(.*)",[trim]))),
    <<"foobar c: etc:">> = iolist_to_binary(join(re:split("foobar crowbar etc","(?:(?!foo)...|^.{0,2})bar(.*)",[{parts,
                                                                                                                                                                                                                                              2}]))),
    <<"foobar c: etc:">> = iolist_to_binary(join(re:split("foobar crowbar etc","(?:(?!foo)...|^.{0,2})bar(.*)",[]))),
    <<":rel">> = iolist_to_binary(join(re:split("barrel","(?:(?!foo)...|^.{0,2})bar(.*)",[trim]))),
    <<":rel:">> = iolist_to_binary(join(re:split("barrel","(?:(?!foo)...|^.{0,2})bar(.*)",[{parts,
                                                                                                                                                                                                                      2}]))),
    <<":rel:">> = iolist_to_binary(join(re:split("barrel","(?:(?!foo)...|^.{0,2})bar(.*)",[]))),
    <<":rel">> = iolist_to_binary(join(re:split("2barrel","(?:(?!foo)...|^.{0,2})bar(.*)",[trim]))),
    <<":rel:">> = iolist_to_binary(join(re:split("2barrel","(?:(?!foo)...|^.{0,2})bar(.*)",[{parts,
                                                                                                                                                                                                                        2}]))),
    <<":rel:">> = iolist_to_binary(join(re:split("2barrel","(?:(?!foo)...|^.{0,2})bar(.*)",[]))),
    <<":rel">> = iolist_to_binary(join(re:split("A barrel","(?:(?!foo)...|^.{0,2})bar(.*)",[trim]))),
    <<":rel:">> = iolist_to_binary(join(re:split("A barrel","(?:(?!foo)...|^.{0,2})bar(.*)",[{parts,
                                                                                                                                                                                                                          2}]))),
    <<":rel:">> = iolist_to_binary(join(re:split("A barrel","(?:(?!foo)...|^.{0,2})bar(.*)",[]))),
    <<":abc:456">> = iolist_to_binary(join(re:split("abc456","^(\\D*)(?=\\d)(?!123)",[trim]))),
    <<":abc:456">> = iolist_to_binary(join(re:split("abc456","^(\\D*)(?=\\d)(?!123)",[{parts,
                                                                                                                                                                                                        2}]))),
    <<":abc:456">> = iolist_to_binary(join(re:split("abc456","^(\\D*)(?=\\d)(?!123)",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(\\D*)(?=\\d)(?!123)",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(\\D*)(?=\\d)(?!123)",[{parts,
                                                                                                                                                                                                                  2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(\\D*)(?=\\d)(?!123)",[]))),
    <<"abc123">> = iolist_to_binary(join(re:split("abc123","^(\\D*)(?=\\d)(?!123)",[trim]))),
    <<"abc123">> = iolist_to_binary(join(re:split("abc123","^(\\D*)(?=\\d)(?!123)",[{parts,
                                                                                                                                                                                                        2}]))),
    <<"abc123">> = iolist_to_binary(join(re:split("abc123","^(\\D*)(?=\\d)(?!123)",[]))),
    ok.
run3() ->
    <<"">> = iolist_to_binary(join(re:split("1234","^1234(?# test newlines
  inside)",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("1234","^1234(?# test newlines
  inside)",[{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("1234","^1234(?# test newlines
  inside)",[]))),
    <<"">> = iolist_to_binary(join(re:split("1234","^1234 #comment in extended re
  ",[extended,trim]))),
    <<":">> = iolist_to_binary(join(re:split("1234","^1234 #comment in extended re
  ",[extended,{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("1234","^1234 #comment in extended re
  ",[extended]))),
    <<"">> = iolist_to_binary(join(re:split("abcd","#rhubarb
  abcd",[extended,trim]))),
    <<":">> = iolist_to_binary(join(re:split("abcd","#rhubarb
  abcd",[extended,{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("abcd","#rhubarb
  abcd",[extended]))),
    <<"">> = iolist_to_binary(join(re:split("abcd","^abcd#rhubarb",[extended,
                                                                                                                                                                                trim]))),
    <<":">> = iolist_to_binary(join(re:split("abcd","^abcd#rhubarb",[extended,
                                                                                                                                                                                  {parts,
                                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("abcd","^abcd#rhubarb",[extended]))),
    <<":a:b">> = iolist_to_binary(join(re:split("aaab","^(a)\\1{2,3}(.)",[trim]))),
    <<":a:b:">> = iolist_to_binary(join(re:split("aaab","^(a)\\1{2,3}(.)",[{parts,
                                                                                                                                                                                       2}]))),
    <<":a:b:">> = iolist_to_binary(join(re:split("aaab","^(a)\\1{2,3}(.)",[]))),
    <<":a:b">> = iolist_to_binary(join(re:split("aaaab","^(a)\\1{2,3}(.)",[trim]))),
    <<":a:b:">> = iolist_to_binary(join(re:split("aaaab","^(a)\\1{2,3}(.)",[{parts,
                                                                                                                                                                                         2}]))),
    <<":a:b:">> = iolist_to_binary(join(re:split("aaaab","^(a)\\1{2,3}(.)",[]))),
    <<":a:a:b">> = iolist_to_binary(join(re:split("aaaaab","^(a)\\1{2,3}(.)",[trim]))),
    <<":a:a:b">> = iolist_to_binary(join(re:split("aaaaab","^(a)\\1{2,3}(.)",[{parts,
                                                                                                                                                                                           2}]))),
    <<":a:a:b">> = iolist_to_binary(join(re:split("aaaaab","^(a)\\1{2,3}(.)",[]))),
    <<":a:a:ab">> = iolist_to_binary(join(re:split("aaaaaab","^(a)\\1{2,3}(.)",[trim]))),
    <<":a:a:ab">> = iolist_to_binary(join(re:split("aaaaaab","^(a)\\1{2,3}(.)",[{parts,
                                                                                                                                                                                             2}]))),
    <<":a:a:ab">> = iolist_to_binary(join(re:split("aaaaaab","^(a)\\1{2,3}(.)",[]))),
    <<"the ">> = iolist_to_binary(join(re:split("the abc","(?!^)abc",[trim]))),
    <<"the :">> = iolist_to_binary(join(re:split("the abc","(?!^)abc",[{parts,
                                                                                                                                                                              2}]))),
    <<"the :">> = iolist_to_binary(join(re:split("the abc","(?!^)abc",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?!^)abc",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?!^)abc",[{parts,
                                                                                                                                                                                      2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?!^)abc",[]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(?!^)abc",[trim]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(?!^)abc",[{parts,
                                                                                                                                                                      2}]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(?!^)abc",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc","(?=^)abc",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","(?=^)abc",[{parts,
                                                                                                                                                                      2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","(?=^)abc",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?=^)abc",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?=^)abc",[{parts,
                                                                                                                                                                                      2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?=^)abc",[]))),
    <<"the abc">> = iolist_to_binary(join(re:split("the abc","(?=^)abc",[trim]))),
    <<"the abc">> = iolist_to_binary(join(re:split("the abc","(?=^)abc",[{parts,
                                                                                                                                                                              2}]))),
    <<"the abc">> = iolist_to_binary(join(re:split("the abc","(?=^)abc",[]))),
    <<":b:bbb">> = iolist_to_binary(join(re:split("aabbbbb","^[ab]{1,3}(ab*|b)",[trim]))),
    <<":b:bbb">> = iolist_to_binary(join(re:split("aabbbbb","^[ab]{1,3}(ab*|b)",[{parts,
                                                                                                                                                                                                2}]))),
    <<":b:bbb">> = iolist_to_binary(join(re:split("aabbbbb","^[ab]{1,3}(ab*|b)",[]))),
    <<":abbbbb">> = iolist_to_binary(join(re:split("aabbbbb","^[ab]{1,3}?(ab*|b)",[trim]))),
    <<":abbbbb:">> = iolist_to_binary(join(re:split("aabbbbb","^[ab]{1,3}?(ab*|b)",[{parts,
                                                                                                                                                                                                  2}]))),
    <<":abbbbb:">> = iolist_to_binary(join(re:split("aabbbbb","^[ab]{1,3}?(ab*|b)",[]))),
    <<":a:bbbbb">> = iolist_to_binary(join(re:split("aabbbbb","^[ab]{1,3}?(ab*?|b)",[trim]))),
    <<":a:bbbbb">> = iolist_to_binary(join(re:split("aabbbbb","^[ab]{1,3}?(ab*?|b)",[{parts,
                                                                                                                                                                                                    2}]))),
    <<":a:bbbbb">> = iolist_to_binary(join(re:split("aabbbbb","^[ab]{1,3}?(ab*?|b)",[]))),
    <<":b:bbb">> = iolist_to_binary(join(re:split("aabbbbb","^[ab]{1,3}(ab*?|b)",[trim]))),
    <<":b:bbb">> = iolist_to_binary(join(re:split("aabbbbb","^[ab]{1,3}(ab*?|b)",[{parts,
                                                                                                                                                                                                  2}]))),
    <<":b:bbb">> = iolist_to_binary(join(re:split("aabbbbb","^[ab]{1,3}(ab*?|b)",[]))),
    <<"Alan Other <user.ain>">> = iolist_to_binary(join(re:split("Alan Other <user.ain>","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended,trim]))),
    <<"Alan Other <user.ain>">> = iolist_to_binary(join(re:split("Alan Other <user.ain>","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended,
                                                               {parts,2}]))),
    <<"Alan Other <user.ain>">> = iolist_to_binary(join(re:split("Alan Other <user.ain>","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended]))),
    <<"<user.ain>">> = iolist_to_binary(join(re:split("<user.ain>","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended,trim]))),
    <<"<user.ain>">> = iolist_to_binary(join(re:split("<user.ain>","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended,
                                                               {parts,2}]))),
    <<"<user.ain>">> = iolist_to_binary(join(re:split("<user.ain>","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended]))),
    <<"user.ain">> = iolist_to_binary(join(re:split("user.ain","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended,trim]))),
    <<"user.ain">> = iolist_to_binary(join(re:split("user.ain","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended,
                                                               {parts,2}]))),
    <<"user.ain">> = iolist_to_binary(join(re:split("user.ain","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended]))),
    <<"\"A. Other\" <user.1234.ain> (a comment)">> = iolist_to_binary(join(re:split("\"A. Other\" <user.1234.ain> (a comment)","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended,trim]))),
    <<"\"A. Other\" <user.1234.ain> (a comment)">> = iolist_to_binary(join(re:split("\"A. Other\" <user.1234.ain> (a comment)","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended,
                                                               {parts,2}]))),
    <<"\"A. Other\" <user.1234.ain> (a comment)">> = iolist_to_binary(join(re:split("\"A. Other\" <user.1234.ain> (a comment)","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended]))),
    <<"A. Other <user.1234.ain> (a comment)">> = iolist_to_binary(join(re:split("A. Other <user.1234.ain> (a comment)","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended,trim]))),
    <<"A. Other <user.1234.ain> (a comment)">> = iolist_to_binary(join(re:split("A. Other <user.1234.ain> (a comment)","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended,
                                                               {parts,2}]))),
    <<"A. Other <user.1234.ain> (a comment)">> = iolist_to_binary(join(re:split("A. Other <user.1234.ain> (a comment)","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended]))),
    <<"\"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"-re.lay">> = iolist_to_binary(join(re:split("\"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"-re.lay","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended,trim]))),
    <<"\"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"-re.lay">> = iolist_to_binary(join(re:split("\"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"-re.lay","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended,
                                                               {parts,2}]))),
    <<"\"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"-re.lay">> = iolist_to_binary(join(re:split("\"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"-re.lay","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended]))),
    <<"A missing angle <user.where">> = iolist_to_binary(join(re:split("A missing angle <user.where","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended,trim]))),
    <<"A missing angle <user.where">> = iolist_to_binary(join(re:split("A missing angle <user.where","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended,
                                                               {parts,2}]))),
    <<"A missing angle <user.where">> = iolist_to_binary(join(re:split("A missing angle <user.where","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended,trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended,
                                                               {parts,2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended]))),
    <<"The quick brown fox">> = iolist_to_binary(join(re:split("The quick brown fox","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended,trim]))),
    <<"The quick brown fox">> = iolist_to_binary(join(re:split("The quick brown fox","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended,
                                                               {parts,2}]))),
    <<"The quick brown fox">> = iolist_to_binary(join(re:split("The quick brown fox","  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                          # optional leading comment
(?:    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
# address
|                     #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)             # one word, optionally followed by....
(?:
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037]  |  # atom and space parts, or...
\\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)       |  # comments, or...

\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
# quoted strings
)*
<  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                     # leading <
(?:  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*

(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  ,  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
)* # further okay, if led by comma
:                                # closing colon
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  )? #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)                    # initial word
(?:  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\" (?:                      # opening quote...
[^\\\\\\x80-\\xff\\n\\015\"]                #   Anything except backslash and quote
|                     #    or
\\\\ [^\\x80-\\xff]           #   Escaped something (something != CR)
)* \"  # closing quote
)  )* # further okay, if led by a period
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  @  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*    (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                           # initial subdomain
(?:                                  #
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  \\.                        # if led by a period...
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*   (?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|   \\[                         # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*    #    stuff
\\]                        #           ]
)                     #   ...further okay
)*
#       address spec
(?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*  > #                  trailing >
# name and address
)  (?: [\\040\\t] |  \\(
(?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  |  \\( (?:  [^\\\\\\x80-\\xff\\n\\015()]  |  \\\\ [^\\x80-\\xff]  )* \\)  )*
\\)  )*                       # optional trailing comment",[extended]))),
    <<"Alan Other <user.ain>">> = iolist_to_binary(join(re:split("Alan Other <user.ain>","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended,trim]))),
    <<"Alan Other <user.ain>">> = iolist_to_binary(join(re:split("Alan Other <user.ain>","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended,{parts,2}]))),
    <<"Alan Other <user.ain>">> = iolist_to_binary(join(re:split("Alan Other <user.ain>","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended]))),
    <<"<user.ain>">> = iolist_to_binary(join(re:split("<user.ain>","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended,trim]))),
    <<"<user.ain>">> = iolist_to_binary(join(re:split("<user.ain>","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended,{parts,2}]))),
    <<"<user.ain>">> = iolist_to_binary(join(re:split("<user.ain>","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended]))),
    <<"user.ain">> = iolist_to_binary(join(re:split("user.ain","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended,trim]))),
    <<"user.ain">> = iolist_to_binary(join(re:split("user.ain","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended,{parts,2}]))),
    <<"user.ain">> = iolist_to_binary(join(re:split("user.ain","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended]))),
    <<"\"A. Other\" <user.1234.ain> (a comment)">> = iolist_to_binary(join(re:split("\"A. Other\" <user.1234.ain> (a comment)","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended,trim]))),
    <<"\"A. Other\" <user.1234.ain> (a comment)">> = iolist_to_binary(join(re:split("\"A. Other\" <user.1234.ain> (a comment)","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended,{parts,2}]))),
    <<"\"A. Other\" <user.1234.ain> (a comment)">> = iolist_to_binary(join(re:split("\"A. Other\" <user.1234.ain> (a comment)","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended]))),
    <<"A. Other <user.1234.ain> (a comment)">> = iolist_to_binary(join(re:split("A. Other <user.1234.ain> (a comment)","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended,trim]))),
    <<"A. Other <user.1234.ain> (a comment)">> = iolist_to_binary(join(re:split("A. Other <user.1234.ain> (a comment)","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended,{parts,2}]))),
    <<"A. Other <user.1234.ain> (a comment)">> = iolist_to_binary(join(re:split("A. Other <user.1234.ain> (a comment)","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended]))),
    <<"\"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"-re.lay">> = iolist_to_binary(join(re:split("\"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"-re.lay","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended,trim]))),
    <<"\"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"-re.lay">> = iolist_to_binary(join(re:split("\"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"-re.lay","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended,{parts,2}]))),
    <<"\"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"-re.lay">> = iolist_to_binary(join(re:split("\"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"-re.lay","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended]))),
    <<"A missing angle <user.where">> = iolist_to_binary(join(re:split("A missing angle <user.where","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended,trim]))),
    <<"A missing angle <user.where">> = iolist_to_binary(join(re:split("A missing angle <user.where","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended,{parts,2}]))),
    <<"A missing angle <user.where">> = iolist_to_binary(join(re:split("A missing angle <user.where","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended,trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended,{parts,2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended]))),
    <<"The quick brown fox">> = iolist_to_binary(join(re:split("The quick brown fox","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended,trim]))),
    <<"The quick brown fox">> = iolist_to_binary(join(re:split("The quick brown fox","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended,{parts,2}]))),
    <<"The quick brown fox">> = iolist_to_binary(join(re:split("The quick brown fox","[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional leading comment
(?:
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
# address
|                             #  or
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
# leading word
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *               # \"normal\" atoms and or spaces
(?:
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
|
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
) # \"special\" comment or quoted string
[^()<>@,;:\".\\\\\\[\\]\\x80-\\xff\\000-\\010\\012-\\037] *            #  more \"normal\"
)*
<
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# <
(?:
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
(?: ,
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
)*  # additional domains
:
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)?     #       optional route
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
# Atom
|                       #  or
\"                                     # \"
[^\\\\\\x80-\\xff\\n\\015\"] *                            #   normal
(?:  \\\\ [^\\x80-\\xff]  [^\\\\\\x80-\\xff\\n\\015\"] * )*        #   ( special normal* )*
\"                                     #        \"
# Quoted string
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# additional words
)*
@
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
(?:
\\.
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
(?:
[^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]+    # some number of atom characters...
(?![^(\\040)<>@,;:\".\\\\\\[\\]\\000-\\037\\x80-\\xff]) # ..not followed by something that could be part of an atom
|
\\[                            # [
(?: [^\\\\\\x80-\\xff\\n\\015\\[\\]] |  \\\\ [^\\x80-\\xff]  )*     #    stuff
\\]                           #           ]
)
[\\040\\t]*                    # Nab whitespace.
(?:
\\(                              #  (
[^\\\\\\x80-\\xff\\n\\015()] *                             #     normal*
(?:                                 #       (
(?:  \\\\ [^\\x80-\\xff]  |
\\(                            #  (
[^\\\\\\x80-\\xff\\n\\015()] *                            #     normal*
(?:  \\\\ [^\\x80-\\xff]   [^\\\\\\x80-\\xff\\n\\015()] * )*        #     (special normal*)*
\\)                           #                       )
)    #         special
[^\\\\\\x80-\\xff\\n\\015()] *                         #         normal*
)*                                  #            )*
\\)                             #                )
[\\040\\t]* )*    # If comment found, allow more spaces.
# optional trailing comments
)*
#       address spec
>                    #                 >
# name and address
)",[extended]))),
    <<"abcdefpqrxyz0AB">> = iolist_to_binary(join(re:split("abcdefpqrxyz0AB","abc\\0def\\00pqr\\000xyz\\0000AB",[trim]))),
    <<"abcdefpqrxyz0AB">> = iolist_to_binary(join(re:split("abcdefpqrxyz0AB","abc\\0def\\00pqr\\000xyz\\0000AB",[{parts,
                                                                                                                                                                                                                                                          2}]))),
    <<"abcdefpqrxyz0AB">> = iolist_to_binary(join(re:split("abcdefpqrxyz0AB","abc\\0def\\00pqr\\000xyz\\0000AB",[]))),
    <<"abc456 abcdefpqrxyz0ABCDE">> = iolist_to_binary(join(re:split("abc456 abcdefpqrxyz0ABCDE","abc\\0def\\00pqr\\000xyz\\0000AB",[trim]))),
    <<"abc456 abcdefpqrxyz0ABCDE">> = iolist_to_binary(join(re:split("abc456 abcdefpqrxyz0ABCDE","abc\\0def\\00pqr\\000xyz\\0000AB",[{parts,
                                                                                                                                                                                                                                                                              2}]))),
    <<"abc456 abcdefpqrxyz0ABCDE">> = iolist_to_binary(join(re:split("abc456 abcdefpqrxyz0ABCDE","abc\\0def\\00pqr\\000xyz\\0000AB",[]))),
    <<"abc
efpqr0xyz00AB">> = iolist_to_binary(join(re:split("abc
efpqr0xyz00AB","abc\\x0def\\x00pqr\\x000xyz\\x0000AB",[trim]))),
    <<"abc
efpqr0xyz00AB">> = iolist_to_binary(join(re:split("abc
efpqr0xyz00AB","abc\\x0def\\x00pqr\\x000xyz\\x0000AB",[{parts,
                                                                                                                                                                                                                                                                    2}]))),
    <<"abc
efpqr0xyz00AB">> = iolist_to_binary(join(re:split("abc
efpqr0xyz00AB","abc\\x0def\\x00pqr\\x000xyz\\x0000AB",[]))),
    <<"abc456 abc
efpqr0xyz00ABCDE">> = iolist_to_binary(join(re:split("abc456 abc
efpqr0xyz00ABCDE","abc\\x0def\\x00pqr\\x000xyz\\x0000AB",[trim]))),
    <<"abc456 abc
efpqr0xyz00ABCDE">> = iolist_to_binary(join(re:split("abc456 abc
efpqr0xyz00ABCDE","abc\\x0def\\x00pqr\\x000xyz\\x0000AB",[{parts,
                                                                                                                                                                                                                                                                                        2}]))),
    <<"abc456 abc
efpqr0xyz00ABCDE">> = iolist_to_binary(join(re:split("abc456 abc
efpqr0xyz00ABCDE","abc\\x0def\\x00pqr\\x000xyz\\x0000AB",[]))),
    <<"A">> = iolist_to_binary(join(re:split("A","^[\\000-\\037]",[trim]))),
    <<"A">> = iolist_to_binary(join(re:split("A","^[\\000-\\037]",[{parts,
                                                                                                                                                                                  2}]))),
    <<"A">> = iolist_to_binary(join(re:split("A","^[\\000-\\037]",[]))),
    <<":B">> = iolist_to_binary(join(re:split("
B","^[\\000-\\037]",[trim]))),
    <<":B">> = iolist_to_binary(join(re:split("
B","^[\\000-\\037]",[{parts,
                                                                                                                                                                                  2}]))),
    <<":B">> = iolist_to_binary(join(re:split("
B","^[\\000-\\037]",[]))),
    <<":C">> = iolist_to_binary(join(re:split("C","^[\\000-\\037]",[trim]))),
    <<":C">> = iolist_to_binary(join(re:split("C","^[\\000-\\037]",[{parts,
                                                                                                                                                                                  2}]))),
    <<":C">> = iolist_to_binary(join(re:split("C","^[\\000-\\037]",[]))),
    <<"">> = iolist_to_binary(join(re:split("","\\0*",[trim]))),
    <<"">> = iolist_to_binary(join(re:split("","\\0*",[{parts,
                                                                                                                                                                 2}]))),
    <<"">> = iolist_to_binary(join(re:split("","\\0*",[]))),
    <<"The AZ">> = iolist_to_binary(join(re:split("The AZ","A\\x0{2,3}Z",[trim]))),
    <<"The AZ">> = iolist_to_binary(join(re:split("The AZ","A\\x0{2,3}Z",[{parts,
                                                                                                                                                                                       2}]))),
    <<"The AZ">> = iolist_to_binary(join(re:split("The AZ","A\\x0{2,3}Z",[]))),
    <<"An AZ">> = iolist_to_binary(join(re:split("An AZ","A\\x0{2,3}Z",[trim]))),
    <<"An AZ">> = iolist_to_binary(join(re:split("An AZ","A\\x0{2,3}Z",[{parts,
                                                                                                                                                                                       2}]))),
    <<"An AZ">> = iolist_to_binary(join(re:split("An AZ","A\\x0{2,3}Z",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","A\\x0{2,3}Z",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","A\\x0{2,3}Z",[{parts,
                                                                                                                                                                                             2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","A\\x0{2,3}Z",[]))),
    <<"AZ">> = iolist_to_binary(join(re:split("AZ","A\\x0{2,3}Z",[trim]))),
    <<"AZ">> = iolist_to_binary(join(re:split("AZ","A\\x0{2,3}Z",[{parts,
                                                                                                                                                                             2}]))),
    <<"AZ">> = iolist_to_binary(join(re:split("AZ","A\\x0{2,3}Z",[]))),
    <<"AZ">> = iolist_to_binary(join(re:split("AZ","A\\x0{2,3}Z",[trim]))),
    <<"AZ">> = iolist_to_binary(join(re:split("AZ","A\\x0{2,3}Z",[{parts,
                                                                                                                                                                                   2}]))),
    <<"AZ">> = iolist_to_binary(join(re:split("AZ","A\\x0{2,3}Z",[]))),
    <<":cow:bell">> = iolist_to_binary(join(re:split("cowcowbell","^(cow|)\\1(bell)",[trim]))),
    <<":cow:bell:">> = iolist_to_binary(join(re:split("cowcowbell","^(cow|)\\1(bell)",[{parts,
                                                                                                                                                                                                     2}]))),
    <<":cow:bell:">> = iolist_to_binary(join(re:split("cowcowbell","^(cow|)\\1(bell)",[]))),
    <<"::bell">> = iolist_to_binary(join(re:split("bell","^(cow|)\\1(bell)",[trim]))),
    <<"::bell:">> = iolist_to_binary(join(re:split("bell","^(cow|)\\1(bell)",[{parts,
                                                                                                                                                                                         2}]))),
    <<"::bell:">> = iolist_to_binary(join(re:split("bell","^(cow|)\\1(bell)",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(cow|)\\1(bell)",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(cow|)\\1(bell)",[{parts,
                                                                                                                                                                                                       2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(cow|)\\1(bell)",[]))),
    <<"cowbell">> = iolist_to_binary(join(re:split("cowbell","^(cow|)\\1(bell)",[trim]))),
    <<"cowbell">> = iolist_to_binary(join(re:split("cowbell","^(cow|)\\1(bell)",[{parts,
                                                                                                                                                                                               2}]))),
    <<"cowbell">> = iolist_to_binary(join(re:split("cowbell","^(cow|)\\1(bell)",[]))),
    <<":abc">> = iolist_to_binary(join(re:split(" abc","^\\s",[trim]))),
    <<":abc">> = iolist_to_binary(join(re:split(" abc","^\\s",[{parts,
                                                                                                                                                                 2}]))),
    <<":abc">> = iolist_to_binary(join(re:split(" abc","^\\s",[]))),
    <<":abc">> = iolist_to_binary(join(re:split("abc","^\\s",[trim]))),
    <<":abc">> = iolist_to_binary(join(re:split("abc","^\\s",[{parts,
                                                                                                                                                                 2}]))),
    <<":abc">> = iolist_to_binary(join(re:split("abc","^\\s",[]))),
    <<":abc">> = iolist_to_binary(join(re:split("
abc","^\\s",[trim]))),
    <<":abc">> = iolist_to_binary(join(re:split("
abc","^\\s",[{parts,2}]))),
    <<":abc">> = iolist_to_binary(join(re:split("
abc","^\\s",[]))),
    <<":abc">> = iolist_to_binary(join(re:split("
abc","^\\s",[trim]))),
    <<":abc">> = iolist_to_binary(join(re:split("
abc","^\\s",[{parts,
                                                                                                                                                                 2}]))),
    <<":abc">> = iolist_to_binary(join(re:split("
abc","^\\s",[]))),
    <<":abc">> = iolist_to_binary(join(re:split("	abc","^\\s",[trim]))),
    <<":abc">> = iolist_to_binary(join(re:split("	abc","^\\s",[{parts,
                                                                                                                                                                           2}]))),
    <<":abc">> = iolist_to_binary(join(re:split("	abc","^\\s",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^\\s",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^\\s",[{parts,
                                                                                                                                                                               2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^\\s",[]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","^\\s",[trim]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","^\\s",[{parts,
                                                                                                                                                               2}]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","^\\s",[]))),
    ok.
run4() ->
    <<"">> = iolist_to_binary(join(re:split("abc","^a	b
      c",[extended,trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","^a	b
      c",[extended,{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","^a	b
      c",[extended]))),
    <<":a">> = iolist_to_binary(join(re:split("ab","^(a|)\\1*b",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("ab","^(a|)\\1*b",[{parts,
                                                                                                                                                                         2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("ab","^(a|)\\1*b",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aaaab","^(a|)\\1*b",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaaab","^(a|)\\1*b",[{parts,
                                                                                                                                                                               2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaaab","^(a|)\\1*b",[]))),
    <<"">> = iolist_to_binary(join(re:split("b","^(a|)\\1*b",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("b","^(a|)\\1*b",[{parts,
                                                                                                                                                                       2}]))),
    <<"::">> = iolist_to_binary(join(re:split("b","^(a|)\\1*b",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a|)\\1*b",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a|)\\1*b",[{parts,
                                                                                                                                                                                           2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a|)\\1*b",[]))),
    <<"acb">> = iolist_to_binary(join(re:split("acb","^(a|)\\1*b",[trim]))),
    <<"acb">> = iolist_to_binary(join(re:split("acb","^(a|)\\1*b",[{parts,
                                                                                                                                                                           2}]))),
    <<"acb">> = iolist_to_binary(join(re:split("acb","^(a|)\\1*b",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aab","^(a|)\\1+b",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aab","^(a|)\\1+b",[{parts,
                                                                                                                                                                           2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aab","^(a|)\\1+b",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aaaab","^(a|)\\1+b",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaaab","^(a|)\\1+b",[{parts,
                                                                                                                                                                               2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaaab","^(a|)\\1+b",[]))),
    <<"">> = iolist_to_binary(join(re:split("b","^(a|)\\1+b",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("b","^(a|)\\1+b",[{parts,
                                                                                                                                                                       2}]))),
    <<"::">> = iolist_to_binary(join(re:split("b","^(a|)\\1+b",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a|)\\1+b",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a|)\\1+b",[{parts,
                                                                                                                                                                                           2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a|)\\1+b",[]))),
    <<"ab">> = iolist_to_binary(join(re:split("ab","^(a|)\\1+b",[trim]))),
    <<"ab">> = iolist_to_binary(join(re:split("ab","^(a|)\\1+b",[{parts,
                                                                                                                                                                         2}]))),
    <<"ab">> = iolist_to_binary(join(re:split("ab","^(a|)\\1+b",[]))),
    <<":a">> = iolist_to_binary(join(re:split("ab","^(a|)\\1?b",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("ab","^(a|)\\1?b",[{parts,
                                                                                                                                                                         2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("ab","^(a|)\\1?b",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aab","^(a|)\\1?b",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aab","^(a|)\\1?b",[{parts,
                                                                                                                                                                           2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aab","^(a|)\\1?b",[]))),
    <<"">> = iolist_to_binary(join(re:split("b","^(a|)\\1?b",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("b","^(a|)\\1?b",[{parts,
                                                                                                                                                                       2}]))),
    <<"::">> = iolist_to_binary(join(re:split("b","^(a|)\\1?b",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a|)\\1?b",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a|)\\1?b",[{parts,
                                                                                                                                                                                           2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a|)\\1?b",[]))),
    <<"acb">> = iolist_to_binary(join(re:split("acb","^(a|)\\1?b",[trim]))),
    <<"acb">> = iolist_to_binary(join(re:split("acb","^(a|)\\1?b",[{parts,
                                                                                                                                                                           2}]))),
    <<"acb">> = iolist_to_binary(join(re:split("acb","^(a|)\\1?b",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aaab","^(a|)\\1{2}b",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaab","^(a|)\\1{2}b",[{parts,
                                                                                                                                                                                 2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaab","^(a|)\\1{2}b",[]))),
    <<"">> = iolist_to_binary(join(re:split("b","^(a|)\\1{2}b",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("b","^(a|)\\1{2}b",[{parts,
                                                                                                                                                                           2}]))),
    <<"::">> = iolist_to_binary(join(re:split("b","^(a|)\\1{2}b",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a|)\\1{2}b",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a|)\\1{2}b",[{parts,
                                                                                                                                                                                               2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a|)\\1{2}b",[]))),
    <<"ab">> = iolist_to_binary(join(re:split("ab","^(a|)\\1{2}b",[trim]))),
    <<"ab">> = iolist_to_binary(join(re:split("ab","^(a|)\\1{2}b",[{parts,
                                                                                                                                                                             2}]))),
    <<"ab">> = iolist_to_binary(join(re:split("ab","^(a|)\\1{2}b",[]))),
    <<"aab">> = iolist_to_binary(join(re:split("aab","^(a|)\\1{2}b",[trim]))),
    <<"aab">> = iolist_to_binary(join(re:split("aab","^(a|)\\1{2}b",[{parts,
                                                                                                                                                                               2}]))),
    <<"aab">> = iolist_to_binary(join(re:split("aab","^(a|)\\1{2}b",[]))),
    <<"aaaab">> = iolist_to_binary(join(re:split("aaaab","^(a|)\\1{2}b",[trim]))),
    <<"aaaab">> = iolist_to_binary(join(re:split("aaaab","^(a|)\\1{2}b",[{parts,
                                                                                                                                                                                   2}]))),
    <<"aaaab">> = iolist_to_binary(join(re:split("aaaab","^(a|)\\1{2}b",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aaab","^(a|)\\1{2,3}b",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaab","^(a|)\\1{2,3}b",[{parts,
                                                                                                                                                                                     2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaab","^(a|)\\1{2,3}b",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aaaab","^(a|)\\1{2,3}b",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaaab","^(a|)\\1{2,3}b",[{parts,
                                                                                                                                                                                       2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaaab","^(a|)\\1{2,3}b",[]))),
    <<"">> = iolist_to_binary(join(re:split("b","^(a|)\\1{2,3}b",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("b","^(a|)\\1{2,3}b",[{parts,
                                                                                                                                                                               2}]))),
    <<"::">> = iolist_to_binary(join(re:split("b","^(a|)\\1{2,3}b",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a|)\\1{2,3}b",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a|)\\1{2,3}b",[{parts,
                                                                                                                                                                                                   2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a|)\\1{2,3}b",[]))),
    <<"ab">> = iolist_to_binary(join(re:split("ab","^(a|)\\1{2,3}b",[trim]))),
    <<"ab">> = iolist_to_binary(join(re:split("ab","^(a|)\\1{2,3}b",[{parts,
                                                                                                                                                                                 2}]))),
    <<"ab">> = iolist_to_binary(join(re:split("ab","^(a|)\\1{2,3}b",[]))),
    <<"aab">> = iolist_to_binary(join(re:split("aab","^(a|)\\1{2,3}b",[trim]))),
    <<"aab">> = iolist_to_binary(join(re:split("aab","^(a|)\\1{2,3}b",[{parts,
                                                                                                                                                                                   2}]))),
    <<"aab">> = iolist_to_binary(join(re:split("aab","^(a|)\\1{2,3}b",[]))),
    <<"aaaaab">> = iolist_to_binary(join(re:split("aaaaab","^(a|)\\1{2,3}b",[trim]))),
    <<"aaaaab">> = iolist_to_binary(join(re:split("aaaaab","^(a|)\\1{2,3}b",[{parts,
                                                                                                                                                                                         2}]))),
    <<"aaaaab">> = iolist_to_binary(join(re:split("aaaaab","^(a|)\\1{2,3}b",[]))),
    <<"">> = iolist_to_binary(join(re:split("abbbbc","ab{1,3}bc",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abbbbc","ab{1,3}bc",[{parts,
                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("abbbbc","ab{1,3}bc",[]))),
    <<"">> = iolist_to_binary(join(re:split("abbbc","ab{1,3}bc",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abbbc","ab{1,3}bc",[{parts,
                                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("abbbc","ab{1,3}bc",[]))),
    <<"">> = iolist_to_binary(join(re:split("abbc","ab{1,3}bc",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abbc","ab{1,3}bc",[{parts,
                                                                                                                                                                          2}]))),
    <<":">> = iolist_to_binary(join(re:split("abbc","ab{1,3}bc",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","ab{1,3}bc",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","ab{1,3}bc",[{parts,
                                                                                                                                                                                        2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","ab{1,3}bc",[]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","ab{1,3}bc",[trim]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","ab{1,3}bc",[{parts,
                                                                                                                                                                        2}]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","ab{1,3}bc",[]))),
    <<"abbbbbc">> = iolist_to_binary(join(re:split("abbbbbc","ab{1,3}bc",[trim]))),
    <<"abbbbbc">> = iolist_to_binary(join(re:split("abbbbbc","ab{1,3}bc",[{parts,
                                                                                                                                                                                2}]))),
    <<"abbbbbc">> = iolist_to_binary(join(re:split("abbbbbc","ab{1,3}bc",[]))),
    <<":track1:title:Blah blah blah">> = iolist_to_binary(join(re:split("track1.title:TBlah blah blah","([^.]*)\\.([^:]*):[T ]+(.*)",[trim]))),
    <<":track1:title:Blah blah blah:">> = iolist_to_binary(join(re:split("track1.title:TBlah blah blah","([^.]*)\\.([^:]*):[T ]+(.*)",[{parts,
                                                                                                                                                                                                                                                               2}]))),
    <<":track1:title:Blah blah blah:">> = iolist_to_binary(join(re:split("track1.title:TBlah blah blah","([^.]*)\\.([^:]*):[T ]+(.*)",[]))),
    <<":track1:title:Blah blah blah">> = iolist_to_binary(join(re:split("track1.title:TBlah blah blah","([^.]*)\\.([^:]*):[T ]+(.*)",[caseless,
                                                                                                                                                                                                                                                             trim]))),
    <<":track1:title:Blah blah blah:">> = iolist_to_binary(join(re:split("track1.title:TBlah blah blah","([^.]*)\\.([^:]*):[T ]+(.*)",[caseless,
                                                                                                                                                                                                                                                               {parts,
                                                                                                                                                                                                                                                                2}]))),
    <<":track1:title:Blah blah blah:">> = iolist_to_binary(join(re:split("track1.title:TBlah blah blah","([^.]*)\\.([^:]*):[T ]+(.*)",[caseless]))),
    <<":track1:title:Blah blah blah">> = iolist_to_binary(join(re:split("track1.title:TBlah blah blah","([^.]*)\\.([^:]*):[t ]+(.*)",[caseless,
                                                                                                                                                                                                                                                             trim]))),
    <<":track1:title:Blah blah blah:">> = iolist_to_binary(join(re:split("track1.title:TBlah blah blah","([^.]*)\\.([^:]*):[t ]+(.*)",[caseless,
                                                                                                                                                                                                                                                               {parts,
                                                                                                                                                                                                                                                                2}]))),
    <<":track1:title:Blah blah blah:">> = iolist_to_binary(join(re:split("track1.title:TBlah blah blah","([^.]*)\\.([^:]*):[t ]+(.*)",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("WXY_^abc","^[W-c]+$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("WXY_^abc","^[W-c]+$",[{parts,
                                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("WXY_^abc","^[W-c]+$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[W-c]+$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[W-c]+$",[{parts,
                                                                                                                                                                                       2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[W-c]+$",[]))),
    <<"wxy">> = iolist_to_binary(join(re:split("wxy","^[W-c]+$",[trim]))),
    <<"wxy">> = iolist_to_binary(join(re:split("wxy","^[W-c]+$",[{parts,
                                                                                                                                                                       2}]))),
    <<"wxy">> = iolist_to_binary(join(re:split("wxy","^[W-c]+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("WXY_^abc","^[W-c]+$",[caseless,
                                                                                                                                                                               trim]))),
    <<":">> = iolist_to_binary(join(re:split("WXY_^abc","^[W-c]+$",[caseless,
                                                                                                                                                                                 {parts,
                                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("WXY_^abc","^[W-c]+$",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("wxy_^ABC","^[W-c]+$",[caseless,
                                                                                                                                                                               trim]))),
    <<":">> = iolist_to_binary(join(re:split("wxy_^ABC","^[W-c]+$",[caseless,
                                                                                                                                                                                 {parts,
                                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("wxy_^ABC","^[W-c]+$",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("WXY_^abc","^[\\x3f-\\x5F]+$",[caseless,
                                                                                                                                                                                                 trim]))),
    <<":">> = iolist_to_binary(join(re:split("WXY_^abc","^[\\x3f-\\x5F]+$",[caseless,
                                                                                                                                                                                                   {parts,
                                                                                                                                                                                                    2}]))),
    <<":">> = iolist_to_binary(join(re:split("WXY_^abc","^[\\x3f-\\x5F]+$",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("wxy_^ABC","^[\\x3f-\\x5F]+$",[caseless,
                                                                                                                                                                                                 trim]))),
    <<":">> = iolist_to_binary(join(re:split("wxy_^ABC","^[\\x3f-\\x5F]+$",[caseless,
                                                                                                                                                                                                   {parts,
                                                                                                                                                                                                    2}]))),
    <<":">> = iolist_to_binary(join(re:split("wxy_^ABC","^[\\x3f-\\x5F]+$",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("abc","^abc$",[multiline,
                                                                                                                                                               trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","^abc$",[multiline,
                                                                                                                                                                 {parts,
                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","^abc$",[multiline]))),
    <<"qqq
">> = iolist_to_binary(join(re:split("qqq
abc","^abc$",[multiline,trim]))),
    <<"qqq
:">> = iolist_to_binary(join(re:split("qqq
abc","^abc$",[multiline,{parts,2}]))),
    <<"qqq
:">> = iolist_to_binary(join(re:split("qqq
abc","^abc$",[multiline]))),
    <<":
zzz">> = iolist_to_binary(join(re:split("abc
zzz","^abc$",[multiline,trim]))),
    <<":
zzz">> = iolist_to_binary(join(re:split("abc
zzz","^abc$",[multiline,{parts,2}]))),
    <<":
zzz">> = iolist_to_binary(join(re:split("abc
zzz","^abc$",[multiline]))),
    <<"qqq
:
zzz">> = iolist_to_binary(join(re:split("qqq
abc
zzz","^abc$",[multiline,trim]))),
    <<"qqq
:
zzz">> = iolist_to_binary(join(re:split("qqq
abc
zzz","^abc$",[multiline,{parts,2}]))),
    <<"qqq
:
zzz">> = iolist_to_binary(join(re:split("qqq
abc
zzz","^abc$",[multiline]))),
    <<"">> = iolist_to_binary(join(re:split("abc","^abc$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","^abc$",[{parts,
                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","^abc$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^abc$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^abc$",[{parts,
                                                                                                                                                                                 2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^abc$",[]))),
    <<"qqq
abc">> = iolist_to_binary(join(re:split("qqq
abc","^abc$",[trim]))),
    <<"qqq
abc">> = iolist_to_binary(join(re:split("qqq
abc","^abc$",[{parts,2}]))),
    <<"qqq
abc">> = iolist_to_binary(join(re:split("qqq
abc","^abc$",[]))),
    <<"abc
zzz">> = iolist_to_binary(join(re:split("abc
zzz","^abc$",[trim]))),
    <<"abc
zzz">> = iolist_to_binary(join(re:split("abc
zzz","^abc$",[{parts,2}]))),
    <<"abc
zzz">> = iolist_to_binary(join(re:split("abc
zzz","^abc$",[]))),
    <<"qqq
abc
zzz">> = iolist_to_binary(join(re:split("qqq
abc
zzz","^abc$",[trim]))),
    <<"qqq
abc
zzz">> = iolist_to_binary(join(re:split("qqq
abc
zzz","^abc$",[{parts,2}]))),
    <<"qqq
abc
zzz">> = iolist_to_binary(join(re:split("qqq
abc
zzz","^abc$",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc","\\Aabc\\Z",[multiline,
                                                                                                                                                                        trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","\\Aabc\\Z",[multiline,
                                                                                                                                                                          {parts,
                                                                                                                                                                           2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","\\Aabc\\Z",[multiline]))),
    <<"">> = iolist_to_binary(join(re:split("abc","\\Aabc\\Z",[multiline,
                                                                                                                                                                        trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","\\Aabc\\Z",[multiline,
                                                                                                                                                                          {parts,
                                                                                                                                                                           2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","\\Aabc\\Z",[multiline]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\Aabc\\Z",[multiline,
                                                                                                                                                                                        trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\Aabc\\Z",[multiline,
                                                                                                                                                                                          {parts,
                                                                                                                                                                                           2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\Aabc\\Z",[multiline]))),
    <<"qqq
abc">> = iolist_to_binary(join(re:split("qqq
abc","\\Aabc\\Z",[multiline,trim]))),
    <<"qqq
abc">> = iolist_to_binary(join(re:split("qqq
abc","\\Aabc\\Z",[multiline,{parts,2}]))),
    <<"qqq
abc">> = iolist_to_binary(join(re:split("qqq
abc","\\Aabc\\Z",[multiline]))),
    <<"abc
zzz">> = iolist_to_binary(join(re:split("abc
zzz","\\Aabc\\Z",[multiline,trim]))),
    <<"abc
zzz">> = iolist_to_binary(join(re:split("abc
zzz","\\Aabc\\Z",[multiline,{parts,2}]))),
    <<"abc
zzz">> = iolist_to_binary(join(re:split("abc
zzz","\\Aabc\\Z",[multiline]))),
    <<"qqq
abc
zzz">> = iolist_to_binary(join(re:split("qqq
abc
zzz","\\Aabc\\Z",[multiline,trim]))),
    <<"qqq
abc
zzz">> = iolist_to_binary(join(re:split("qqq
abc
zzz","\\Aabc\\Z",[multiline,{parts,2}]))),
    <<"qqq
abc
zzz">> = iolist_to_binary(join(re:split("qqq
abc
zzz","\\Aabc\\Z",[multiline]))),
    <<":f">> = iolist_to_binary(join(re:split("abc
def","\\A(.)*\\Z",[dotall,trim]))),
    <<":f:">> = iolist_to_binary(join(re:split("abc
def","\\A(.)*\\Z",[dotall,{parts,2}]))),
    <<":f:">> = iolist_to_binary(join(re:split("abc
def","\\A(.)*\\Z",[dotall]))),
    <<":s">> = iolist_to_binary(join(re:split("*** Failers","\\A(.)*\\Z",[multiline,
                                                                                                                                                                                          trim]))),
    <<":s:">> = iolist_to_binary(join(re:split("*** Failers","\\A(.)*\\Z",[multiline,
                                                                                                                                                                                            {parts,
                                                                                                                                                                                             2}]))),
    <<":s:">> = iolist_to_binary(join(re:split("*** Failers","\\A(.)*\\Z",[multiline]))),
    <<"abc
def">> = iolist_to_binary(join(re:split("abc
def","\\A(.)*\\Z",[multiline,trim]))),
    <<"abc
def">> = iolist_to_binary(join(re:split("abc
def","\\A(.)*\\Z",[multiline,{parts,2}]))),
    <<"abc
def">> = iolist_to_binary(join(re:split("abc
def","\\A(.)*\\Z",[multiline]))),
    <<"::c">> = iolist_to_binary(join(re:split("b::c","(?:b)|(?::+)",[trim]))),
    <<":::c">> = iolist_to_binary(join(re:split("b::c","(?:b)|(?::+)",[{parts,
                                                                                                                                                                                2}]))),
    <<"::c">> = iolist_to_binary(join(re:split("b::c","(?:b)|(?::+)",[]))),
    <<"c">> = iolist_to_binary(join(re:split("c::b","(?:b)|(?::+)",[trim]))),
    <<"c:b">> = iolist_to_binary(join(re:split("c::b","(?:b)|(?::+)",[{parts,
                                                                                                                                                                                2}]))),
    <<"c::">> = iolist_to_binary(join(re:split("c::b","(?:b)|(?::+)",[]))),
    <<"">> = iolist_to_binary(join(re:split("az-","[-az]+",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("az-","[-az]+",[{parts,
                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("az-","[-az]+",[]))),
    <<"*** F:ilers">> = iolist_to_binary(join(re:split("*** Failers","[-az]+",[trim]))),
    <<"*** F:ilers">> = iolist_to_binary(join(re:split("*** Failers","[-az]+",[{parts,
                                                                                                                                                                                  2}]))),
    <<"*** F:ilers">> = iolist_to_binary(join(re:split("*** Failers","[-az]+",[]))),
    <<"b">> = iolist_to_binary(join(re:split("b","[-az]+",[trim]))),
    <<"b">> = iolist_to_binary(join(re:split("b","[-az]+",[{parts,
                                                                                                                                                              2}]))),
    <<"b">> = iolist_to_binary(join(re:split("b","[-az]+",[]))),
    ok.
run5() ->
    <<"">> = iolist_to_binary(join(re:split("za-","[az-]+",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("za-","[az-]+",[{parts,
                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("za-","[az-]+",[]))),
    <<"*** F:ilers">> = iolist_to_binary(join(re:split("*** Failers","[az-]+",[trim]))),
    <<"*** F:ilers">> = iolist_to_binary(join(re:split("*** Failers","[az-]+",[{parts,
                                                                                                                                                                                  2}]))),
    <<"*** F:ilers">> = iolist_to_binary(join(re:split("*** Failers","[az-]+",[]))),
    <<"b">> = iolist_to_binary(join(re:split("b","[az-]+",[trim]))),
    <<"b">> = iolist_to_binary(join(re:split("b","[az-]+",[{parts,
                                                                                                                                                              2}]))),
    <<"b">> = iolist_to_binary(join(re:split("b","[az-]+",[]))),
    <<"">> = iolist_to_binary(join(re:split("a-z","[a\\-z]+",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a-z","[a\\-z]+",[{parts,
                                                                                                                                                                       2}]))),
    <<":">> = iolist_to_binary(join(re:split("a-z","[a\\-z]+",[]))),
    <<"*** F:ilers">> = iolist_to_binary(join(re:split("*** Failers","[a\\-z]+",[trim]))),
    <<"*** F:ilers">> = iolist_to_binary(join(re:split("*** Failers","[a\\-z]+",[{parts,
                                                                                                                                                                                       2}]))),
    <<"*** F:ilers">> = iolist_to_binary(join(re:split("*** Failers","[a\\-z]+",[]))),
    <<"b">> = iolist_to_binary(join(re:split("b","[a\\-z]+",[trim]))),
    <<"b">> = iolist_to_binary(join(re:split("b","[a\\-z]+",[{parts,
                                                                                                                                                                   2}]))),
    <<"b">> = iolist_to_binary(join(re:split("b","[a\\-z]+",[]))),
    <<"">> = iolist_to_binary(join(re:split("abcdxyz","[a-z]+",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abcdxyz","[a-z]+",[{parts,
                                                                                                                                                                          2}]))),
    <<":">> = iolist_to_binary(join(re:split("abcdxyz","[a-z]+",[]))),
    <<"">> = iolist_to_binary(join(re:split("12-34","[\\d-]+",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("12-34","[\\d-]+",[{parts,
                                                                                                                                                                         2}]))),
    <<":">> = iolist_to_binary(join(re:split("12-34","[\\d-]+",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","[\\d-]+",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","[\\d-]+",[{parts,
                                                                                                                                                                                     2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","[\\d-]+",[]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","[\\d-]+",[trim]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","[\\d-]+",[{parts,
                                                                                                                                                                     2}]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","[\\d-]+",[]))),
    <<"">> = iolist_to_binary(join(re:split("12-34z","[\\d-z]+",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("12-34z","[\\d-z]+",[{parts,
                                                                                                                                                                             2}]))),
    <<":">> = iolist_to_binary(join(re:split("12-34z","[\\d-z]+",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","[\\d-z]+",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","[\\d-z]+",[{parts,
                                                                                                                                                                                       2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","[\\d-z]+",[]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","[\\d-z]+",[trim]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","[\\d-z]+",[{parts,
                                                                                                                                                                       2}]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","[\\d-z]+",[]))),
    <<": ">> = iolist_to_binary(join(re:split("\\ ","\\x5c",[trim]))),
    <<": ">> = iolist_to_binary(join(re:split("\\ ","\\x5c",[{parts,
                                                                                                                                                                   2}]))),
    <<": ">> = iolist_to_binary(join(re:split("\\ ","\\x5c",[]))),
    <<"the:oo">> = iolist_to_binary(join(re:split("the Zoo","\\x20Z",[trim]))),
    <<"the:oo">> = iolist_to_binary(join(re:split("the Zoo","\\x20Z",[{parts,
                                                                                                                                                                           2}]))),
    <<"the:oo">> = iolist_to_binary(join(re:split("the Zoo","\\x20Z",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\x20Z",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\x20Z",[{parts,
                                                                                                                                                                                   2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\x20Z",[]))),
    <<"Zulu">> = iolist_to_binary(join(re:split("Zulu","\\x20Z",[trim]))),
    <<"Zulu">> = iolist_to_binary(join(re:split("Zulu","\\x20Z",[{parts,
                                                                                                                                                                     2}]))),
    <<"Zulu">> = iolist_to_binary(join(re:split("Zulu","\\x20Z",[]))),
    <<":abc">> = iolist_to_binary(join(re:split("abcabc","(abc)\\1",[caseless,
                                                                                                                                                                           trim]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abcabc","(abc)\\1",[caseless,
                                                                                                                                                                             {parts,
                                                                                                                                                                              2}]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abcabc","(abc)\\1",[caseless]))),
    <<":ABC">> = iolist_to_binary(join(re:split("ABCabc","(abc)\\1",[caseless,
                                                                                                                                                                           trim]))),
    <<":ABC:">> = iolist_to_binary(join(re:split("ABCabc","(abc)\\1",[caseless,
                                                                                                                                                                             {parts,
                                                                                                                                                                              2}]))),
    <<":ABC:">> = iolist_to_binary(join(re:split("ABCabc","(abc)\\1",[caseless]))),
    <<":abc">> = iolist_to_binary(join(re:split("abcABC","(abc)\\1",[caseless,
                                                                                                                                                                           trim]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abcABC","(abc)\\1",[caseless,
                                                                                                                                                                             {parts,
                                                                                                                                                                              2}]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abcABC","(abc)\\1",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ab{3cd","ab{3cd",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("ab{3cd","ab{3cd",[{parts,
                                                                                                                                                                        2}]))),
    <<":">> = iolist_to_binary(join(re:split("ab{3cd","ab{3cd",[]))),
    <<"">> = iolist_to_binary(join(re:split("ab{3,cd","ab{3,cd",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("ab{3,cd","ab{3,cd",[{parts,
                                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("ab{3,cd","ab{3,cd",[]))),
    <<"">> = iolist_to_binary(join(re:split("ab{3,4a}cd","ab{3,4a}cd",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("ab{3,4a}cd","ab{3,4a}cd",[{parts,
                                                                                                                                                                                        2}]))),
    <<":">> = iolist_to_binary(join(re:split("ab{3,4a}cd","ab{3,4a}cd",[]))),
    <<"">> = iolist_to_binary(join(re:split("{4,5a}bc","{4,5a}bc",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("{4,5a}bc","{4,5a}bc",[{parts,
                                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("{4,5a}bc","{4,5a}bc",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc","abc$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","abc$",[{parts,
                                                                                                                                                               2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","abc$",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc","abc$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","abc$",[{parts,
                                                                                                                                                               2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","abc$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","abc$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","abc$",[{parts,
                                                                                                                                                                               2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","abc$",[]))),
    <<"abc
def">> = iolist_to_binary(join(re:split("abc
def","abc$",[trim]))),
    <<"abc
def">> = iolist_to_binary(join(re:split("abc
def","abc$",[{parts,2}]))),
    <<"abc
def">> = iolist_to_binary(join(re:split("abc
def","abc$",[]))),
    <<":abc">> = iolist_to_binary(join(re:split("abcS","(abc)\\123",[trim]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abcS","(abc)\\123",[{parts,
                                                                                                                                                                             2}]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abcS","(abc)\\123",[]))),
    <<":abc">> = iolist_to_binary(join(re:split("abc“","(abc)\\223",[trim]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abc“","(abc)\\223",[{parts,
                                                                                                                                                                             2}]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abc“","(abc)\\223",[]))),
    <<":abc">> = iolist_to_binary(join(re:split("abcÓ","(abc)\\323",[trim]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abcÓ","(abc)\\323",[{parts,
                                                                                                                                                                             2}]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abcÓ","(abc)\\323",[]))),
    <<":abc">> = iolist_to_binary(join(re:split("abc@","(abc)\\100",[trim]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abc@","(abc)\\100",[{parts,
                                                                                                                                                                             2}]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abc@","(abc)\\100",[]))),
    <<":abc">> = iolist_to_binary(join(re:split("abc@","(abc)\\100",[trim]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abc@","(abc)\\100",[{parts,
                                                                                                                                                                             2}]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abc@","(abc)\\100",[]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(abc)\\1000",[trim]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(abc)\\1000",[{parts,
                                                                                                                                                                                 2}]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(abc)\\1000",[]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(abc)\\1000",[trim]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(abc)\\1000",[{parts,
                                                                                                                                                                                 2}]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(abc)\\1000",[]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(abc)\\1000",[trim]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(abc)\\1000",[{parts,
                                                                                                                                                                                 2}]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(abc)\\1000",[]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(abc)\\1000",[trim]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(abc)\\1000",[{parts,
                                                                                                                                                                                 2}]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(abc)\\1000",[]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(abc)\\1000",[trim]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(abc)\\1000",[{parts,
                                                                                                                                                                                 2}]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(abc)\\1000",[]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(abc)\\1000",[trim]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(abc)\\1000",[{parts,
                                                                                                                                                                                 2}]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(abc)\\1000",[]))),
    <<":A:B:C:D:E:F:G:H:I">> = iolist_to_binary(join(re:split("ABCDEFGHIHI","^(A)(B)(C)(D)(E)(F)(G)(H)(I)\\8\\9$",[trim]))),
    <<":A:B:C:D:E:F:G:H:I:">> = iolist_to_binary(join(re:split("ABCDEFGHIHI","^(A)(B)(C)(D)(E)(F)(G)(H)(I)\\8\\9$",[{parts,
                                                                                                                                                                                                                                               2}]))),
    <<":A:B:C:D:E:F:G:H:I:">> = iolist_to_binary(join(re:split("ABCDEFGHIHI","^(A)(B)(C)(D)(E)(F)(G)(H)(I)\\8\\9$",[]))),
    ok.
run6() ->
    <<"">> = iolist_to_binary(join(re:split("A8B9C","^[A\\8B\\9C]+$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("A8B9C","^[A\\8B\\9C]+$",[{parts,
                                                                                                                                                                                         2}]))),
    <<":">> = iolist_to_binary(join(re:split("A8B9C","^[A\\8B\\9C]+$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[A\\8B\\9C]+$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[A\\8B\\9C]+$",[{parts,
                                                                                                                                                                                                     2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[A\\8B\\9C]+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("A8B9C","^[A\\8B\\9C]+$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("A8B9C","^[A\\8B\\9C]+$",[{parts,
                                                                                                                                                                                           2}]))),
    <<":">> = iolist_to_binary(join(re:split("A8B9C","^[A\\8B\\9C]+$",[]))),
    <<":a:b:c:d:e:f:g:h:i:j:k:l">> = iolist_to_binary(join(re:split("abcdefghijkllS","(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)(l)\\12\\123",[trim]))),
    <<":a:b:c:d:e:f:g:h:i:j:k:l:">> = iolist_to_binary(join(re:split("abcdefghijkllS","(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)(l)\\12\\123",[{parts,
                                                                                                                                                                                                                                                                        2}]))),
    <<":a:b:c:d:e:f:g:h:i:j:k:l:">> = iolist_to_binary(join(re:split("abcdefghijkllS","(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)(l)\\12\\123",[]))),
    <<":a:b:c:d:e:f:g:h:i:j:k">> = iolist_to_binary(join(re:split("abcdefghijk
S","(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\\12\\123",[trim]))),
    <<":a:b:c:d:e:f:g:h:i:j:k:">> = iolist_to_binary(join(re:split("abcdefghijk
S","(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\\12\\123",[{parts,2}]))),
    <<":a:b:c:d:e:f:g:h:i:j:k:">> = iolist_to_binary(join(re:split("abcdefghijk
S","(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\\12\\123",[]))),
    <<"">> = iolist_to_binary(join(re:split("abidef","ab\\idef",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abidef","ab\\idef",[{parts,
                                                                                                                                                                             2}]))),
    <<":">> = iolist_to_binary(join(re:split("abidef","ab\\idef",[]))),
    <<"">> = iolist_to_binary(join(re:split("bc","a{0}bc",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("bc","a{0}bc",[{parts,
                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("bc","a{0}bc",[]))),
    <<"">> = iolist_to_binary(join(re:split("xyz","(a|(bc)){0,0}?xyz",[trim]))),
    <<":::">> = iolist_to_binary(join(re:split("xyz","(a|(bc)){0,0}?xyz",[{parts,
                                                                                                                                                                                        2}]))),
    <<":::">> = iolist_to_binary(join(re:split("xyz","(a|(bc)){0,0}?xyz",[]))),
    <<"">> = iolist_to_binary(join(re:split("abcde","abc[\\10]de",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abcde","abc[\\10]de",[{parts,
                                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("abcde","abc[\\10]de",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc
de","abc[\\1]de",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc
de","abc[\\1]de",[{parts,
                                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc
de","abc[\\1]de",[]))),
    <<":abc">> = iolist_to_binary(join(re:split("abc
de","(abc)[\\1]de",[trim]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abc
de","(abc)[\\1]de",[{parts,
                                                                                                                                                                                     2}]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abc
de","(abc)[\\1]de",[]))),
    <<"">> = iolist_to_binary(join(re:split("a
b","(?s)a.b",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a
b","(?s)a.b",[{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("a
b","(?s)a.b",[]))),
    <<":b:a:NOT:cccc:d">> = iolist_to_binary(join(re:split("baNOTccccd","^([^a])([^\\b])([^c]*)([^d]{3,4})",[trim]))),
    <<":b:a:NOT:cccc:d">> = iolist_to_binary(join(re:split("baNOTccccd","^([^a])([^\\b])([^c]*)([^d]{3,4})",[{parts,
                                                                                                                                                                                                                                       2}]))),
    <<":b:a:NOT:cccc:d">> = iolist_to_binary(join(re:split("baNOTccccd","^([^a])([^\\b])([^c]*)([^d]{3,4})",[]))),
    <<":b:a:NOT:ccc:d">> = iolist_to_binary(join(re:split("baNOTcccd","^([^a])([^\\b])([^c]*)([^d]{3,4})",[trim]))),
    <<":b:a:NOT:ccc:d">> = iolist_to_binary(join(re:split("baNOTcccd","^([^a])([^\\b])([^c]*)([^d]{3,4})",[{parts,
                                                                                                                                                                                                                                     2}]))),
    <<":b:a:NOT:ccc:d">> = iolist_to_binary(join(re:split("baNOTcccd","^([^a])([^\\b])([^c]*)([^d]{3,4})",[]))),
    <<":b:a:NO:Tcc:d">> = iolist_to_binary(join(re:split("baNOTccd","^([^a])([^\\b])([^c]*)([^d]{3,4})",[trim]))),
    <<":b:a:NO:Tcc:d">> = iolist_to_binary(join(re:split("baNOTccd","^([^a])([^\\b])([^c]*)([^d]{3,4})",[{parts,
                                                                                                                                                                                                                                   2}]))),
    <<":b:a:NO:Tcc:d">> = iolist_to_binary(join(re:split("baNOTccd","^([^a])([^\\b])([^c]*)([^d]{3,4})",[]))),
    <<":b:a::ccc:d">> = iolist_to_binary(join(re:split("bacccd","^([^a])([^\\b])([^c]*)([^d]{3,4})",[trim]))),
    <<":b:a::ccc:d">> = iolist_to_binary(join(re:split("bacccd","^([^a])([^\\b])([^c]*)([^d]{3,4})",[{parts,
                                                                                                                                                                                                                               2}]))),
    <<":b:a::ccc:d">> = iolist_to_binary(join(re:split("bacccd","^([^a])([^\\b])([^c]*)([^d]{3,4})",[]))),
    <<":*:*:* Fail:ers">> = iolist_to_binary(join(re:split("*** Failers","^([^a])([^\\b])([^c]*)([^d]{3,4})",[trim]))),
    <<":*:*:* Fail:ers:">> = iolist_to_binary(join(re:split("*** Failers","^([^a])([^\\b])([^c]*)([^d]{3,4})",[{parts,
                                                                                                                                                                                                                                         2}]))),
    <<":*:*:* Fail:ers:">> = iolist_to_binary(join(re:split("*** Failers","^([^a])([^\\b])([^c]*)([^d]{3,4})",[]))),
    <<"anything">> = iolist_to_binary(join(re:split("anything","^([^a])([^\\b])([^c]*)([^d]{3,4})",[trim]))),
    <<"anything">> = iolist_to_binary(join(re:split("anything","^([^a])([^\\b])([^c]*)([^d]{3,4})",[{parts,
                                                                                                                                                                                                                                   2}]))),
    <<"anything">> = iolist_to_binary(join(re:split("anything","^([^a])([^\\b])([^c]*)([^d]{3,4})",[]))),
    <<"bc">> = iolist_to_binary(join(re:split("bc","^([^a])([^\\b])([^c]*)([^d]{3,4})",[trim]))),
    <<"bc">> = iolist_to_binary(join(re:split("bc","^([^a])([^\\b])([^c]*)([^d]{3,4})",[{parts,
                                                                                                                                                                                                                         2}]))),
    <<"bc">> = iolist_to_binary(join(re:split("bc","^([^a])([^\\b])([^c]*)([^d]{3,4})",[]))),
    <<"baccd">> = iolist_to_binary(join(re:split("baccd","^([^a])([^\\b])([^c]*)([^d]{3,4})",[trim]))),
    <<"baccd">> = iolist_to_binary(join(re:split("baccd","^([^a])([^\\b])([^c]*)([^d]{3,4})",[{parts,
                                                                                                                                                                                                                             2}]))),
    <<"baccd">> = iolist_to_binary(join(re:split("baccd","^([^a])([^\\b])([^c]*)([^d]{3,4})",[]))),
    <<"">> = iolist_to_binary(join(re:split("Abc","[^a]",[trim]))),
    <<":bc">> = iolist_to_binary(join(re:split("Abc","[^a]",[{parts,
                                                                                                                                                              2}]))),
    <<":::">> = iolist_to_binary(join(re:split("Abc","[^a]",[]))),
    <<"A">> = iolist_to_binary(join(re:split("Abc","[^a]",[caseless,
                                                                                                                                                            trim]))),
    <<"A:c">> = iolist_to_binary(join(re:split("Abc","[^a]",[caseless,
                                                                                                                                                              {parts,
                                                                                                                                                               2}]))),
    <<"A::">> = iolist_to_binary(join(re:split("Abc","[^a]",[caseless]))),
    <<":a">> = iolist_to_binary(join(re:split("AAAaAbc","[^a]+",[trim]))),
    <<":aAbc">> = iolist_to_binary(join(re:split("AAAaAbc","[^a]+",[{parts,
                                                                                                                                                                        2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("AAAaAbc","[^a]+",[]))),
    <<"AAAaA">> = iolist_to_binary(join(re:split("AAAaAbc","[^a]+",[caseless,
                                                                                                                                                                      trim]))),
    <<"AAAaA:">> = iolist_to_binary(join(re:split("AAAaAbc","[^a]+",[caseless,
                                                                                                                                                                        {parts,
                                                                                                                                                                         2}]))),
    <<"AAAaA:">> = iolist_to_binary(join(re:split("AAAaAbc","[^a]+",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("bbb
ccc","[^a]+",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("bbb
ccc","[^a]+",[{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("bbb
ccc","[^a]+",[]))),
    <<"ab">> = iolist_to_binary(join(re:split("abc","[^k]$",[trim]))),
    <<"ab:">> = iolist_to_binary(join(re:split("abc","[^k]$",[{parts,
                                                                                                                                                                 2}]))),
    <<"ab:">> = iolist_to_binary(join(re:split("abc","[^k]$",[]))),
    <<"*** Failer">> = iolist_to_binary(join(re:split("*** Failers","[^k]$",[trim]))),
    <<"*** Failer:">> = iolist_to_binary(join(re:split("*** Failers","[^k]$",[{parts,
                                                                                                                                                                                 2}]))),
    <<"*** Failer:">> = iolist_to_binary(join(re:split("*** Failers","[^k]$",[]))),
    <<"abk">> = iolist_to_binary(join(re:split("abk","[^k]$",[trim]))),
    <<"abk">> = iolist_to_binary(join(re:split("abk","[^k]$",[{parts,
                                                                                                                                                                 2}]))),
    <<"abk">> = iolist_to_binary(join(re:split("abk","[^k]$",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc","[^k]{2,3}$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","[^k]{2,3}$",[{parts,
                                                                                                                                                                           2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","[^k]{2,3}$",[]))),
    <<"k">> = iolist_to_binary(join(re:split("kbc","[^k]{2,3}$",[trim]))),
    <<"k:">> = iolist_to_binary(join(re:split("kbc","[^k]{2,3}$",[{parts,
                                                                                                                                                                           2}]))),
    <<"k:">> = iolist_to_binary(join(re:split("kbc","[^k]{2,3}$",[]))),
    <<"k">> = iolist_to_binary(join(re:split("kabc","[^k]{2,3}$",[trim]))),
    <<"k:">> = iolist_to_binary(join(re:split("kabc","[^k]{2,3}$",[{parts,
                                                                                                                                                                             2}]))),
    <<"k:">> = iolist_to_binary(join(re:split("kabc","[^k]{2,3}$",[]))),
    <<"*** Fail">> = iolist_to_binary(join(re:split("*** Failers","[^k]{2,3}$",[trim]))),
    <<"*** Fail:">> = iolist_to_binary(join(re:split("*** Failers","[^k]{2,3}$",[{parts,
                                                                                                                                                                                           2}]))),
    <<"*** Fail:">> = iolist_to_binary(join(re:split("*** Failers","[^k]{2,3}$",[]))),
    <<"abk">> = iolist_to_binary(join(re:split("abk","[^k]{2,3}$",[trim]))),
    <<"abk">> = iolist_to_binary(join(re:split("abk","[^k]{2,3}$",[{parts,
                                                                                                                                                                           2}]))),
    <<"abk">> = iolist_to_binary(join(re:split("abk","[^k]{2,3}$",[]))),
    <<"akb">> = iolist_to_binary(join(re:split("akb","[^k]{2,3}$",[trim]))),
    <<"akb">> = iolist_to_binary(join(re:split("akb","[^k]{2,3}$",[{parts,
                                                                                                                                                                           2}]))),
    <<"akb">> = iolist_to_binary(join(re:split("akb","[^k]{2,3}$",[]))),
    <<"akk">> = iolist_to_binary(join(re:split("akk","[^k]{2,3}$",[trim]))),
    <<"akk">> = iolist_to_binary(join(re:split("akk","[^k]{2,3}$",[{parts,
                                                                                                                                                                           2}]))),
    <<"akk">> = iolist_to_binary(join(re:split("akk","[^k]{2,3}$",[]))),
    <<"12345678.b.c.d">> = iolist_to_binary(join(re:split("12345678.b.c.d","^\\d{8,}\\@.+[^k]$",[trim]))),
    <<"12345678.b.c.d">> = iolist_to_binary(join(re:split("12345678.b.c.d","^\\d{8,}\\@.+[^k]$",[{parts,
                                                                                                                                                                                                                       2}]))),
    <<"12345678.b.c.d">> = iolist_to_binary(join(re:split("12345678.b.c.d","^\\d{8,}\\@.+[^k]$",[]))),
    <<"123456789.y.z">> = iolist_to_binary(join(re:split("123456789.y.z","^\\d{8,}\\@.+[^k]$",[trim]))),
    <<"123456789.y.z">> = iolist_to_binary(join(re:split("123456789.y.z","^\\d{8,}\\@.+[^k]$",[{parts,
                                                                                                                                                                                                                     2}]))),
    <<"123456789.y.z">> = iolist_to_binary(join(re:split("123456789.y.z","^\\d{8,}\\@.+[^k]$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^\\d{8,}\\@.+[^k]$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^\\d{8,}\\@.+[^k]$",[{parts,
                                                                                                                                                                                                             2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^\\d{8,}\\@.+[^k]$",[]))),
    <<"12345678.y.uk">> = iolist_to_binary(join(re:split("12345678.y.uk","^\\d{8,}\\@.+[^k]$",[trim]))),
    <<"12345678.y.uk">> = iolist_to_binary(join(re:split("12345678.y.uk","^\\d{8,}\\@.+[^k]$",[{parts,
                                                                                                                                                                                                                     2}]))),
    <<"12345678.y.uk">> = iolist_to_binary(join(re:split("12345678.y.uk","^\\d{8,}\\@.+[^k]$",[]))),
    <<"1234567.b.c.d">> = iolist_to_binary(join(re:split("1234567.b.c.d","^\\d{8,}\\@.+[^k]$",[trim]))),
    <<"1234567.b.c.d">> = iolist_to_binary(join(re:split("1234567.b.c.d","^\\d{8,}\\@.+[^k]$",[{parts,
                                                                                                                                                                                                                     2}]))),
    <<"1234567.b.c.d">> = iolist_to_binary(join(re:split("1234567.b.c.d","^\\d{8,}\\@.+[^k]$",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aaaaaaaaa","(a)\\1{8,}",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaaaaaaaa","(a)\\1{8,}",[{parts,
                                                                                                                                                                                       2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaaaaaaaa","(a)\\1{8,}",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aaaaaaaaaa","(a)\\1{8,}",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaaaaaaaaa","(a)\\1{8,}",[{parts,
                                                                                                                                                                                         2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaaaaaaaaa","(a)\\1{8,}",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(a)\\1{8,}",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(a)\\1{8,}",[{parts,
                                                                                                                                                                                           2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(a)\\1{8,}",[]))),
    <<"aaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaa","(a)\\1{8,}",[trim]))),
    <<"aaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaa","(a)\\1{8,}",[{parts,
                                                                                                                                                                                   2}]))),
    <<"aaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaa","(a)\\1{8,}",[]))),
    ok.
run7() ->
    <<"aaaa">> = iolist_to_binary(join(re:split("aaaabcd","[^a]",[trim]))),
    <<"aaaa:cd">> = iolist_to_binary(join(re:split("aaaabcd","[^a]",[{parts,
                                                                                                                                                                      2}]))),
    <<"aaaa:::">> = iolist_to_binary(join(re:split("aaaabcd","[^a]",[]))),
    <<"aa:a">> = iolist_to_binary(join(re:split("aaAabcd","[^a]",[trim]))),
    <<"aa:abcd">> = iolist_to_binary(join(re:split("aaAabcd","[^a]",[{parts,
                                                                                                                                                                      2}]))),
    <<"aa:a:::">> = iolist_to_binary(join(re:split("aaAabcd","[^a]",[]))),
    <<"aaaa">> = iolist_to_binary(join(re:split("aaaabcd","[^a]",[caseless,
                                                                                                                                                                    trim]))),
    <<"aaaa:cd">> = iolist_to_binary(join(re:split("aaaabcd","[^a]",[caseless,
                                                                                                                                                                      {parts,
                                                                                                                                                                       2}]))),
    <<"aaaa:::">> = iolist_to_binary(join(re:split("aaaabcd","[^a]",[caseless]))),
    <<"aaAa">> = iolist_to_binary(join(re:split("aaAabcd","[^a]",[caseless,
                                                                                                                                                                    trim]))),
    <<"aaAa:cd">> = iolist_to_binary(join(re:split("aaAabcd","[^a]",[caseless,
                                                                                                                                                                      {parts,
                                                                                                                                                                       2}]))),
    <<"aaAa:::">> = iolist_to_binary(join(re:split("aaAabcd","[^a]",[caseless]))),
    <<"aaaa">> = iolist_to_binary(join(re:split("aaaabcd","[^az]",[trim]))),
    <<"aaaa:cd">> = iolist_to_binary(join(re:split("aaaabcd","[^az]",[{parts,
                                                                                                                                                                        2}]))),
    <<"aaaa:::">> = iolist_to_binary(join(re:split("aaaabcd","[^az]",[]))),
    <<"aa:a">> = iolist_to_binary(join(re:split("aaAabcd","[^az]",[trim]))),
    <<"aa:abcd">> = iolist_to_binary(join(re:split("aaAabcd","[^az]",[{parts,
                                                                                                                                                                        2}]))),
    <<"aa:a:::">> = iolist_to_binary(join(re:split("aaAabcd","[^az]",[]))),
    <<"aaaa">> = iolist_to_binary(join(re:split("aaaabcd","[^az]",[caseless,
                                                                                                                                                                      trim]))),
    <<"aaaa:cd">> = iolist_to_binary(join(re:split("aaaabcd","[^az]",[caseless,
                                                                                                                                                                        {parts,
                                                                                                                                                                         2}]))),
    <<"aaaa:::">> = iolist_to_binary(join(re:split("aaaabcd","[^az]",[caseless]))),
    <<"aaAa">> = iolist_to_binary(join(re:split("aaAabcd","[^az]",[caseless,
                                                                                                                                                                      trim]))),
    <<"aaAa:cd">> = iolist_to_binary(join(re:split("aaAabcd","[^az]",[caseless,
                                                                                                                                                                        {parts,
                                                                                                                                                                         2}]))),
    <<"aaAa:::">> = iolist_to_binary(join(re:split("aaAabcd","[^az]",[caseless]))),
    <<"xxxxxxxxxxx:xxxxxxxxx">> = iolist_to_binary(join(re:split("xxxxxxxxxxxPSTAIREISLLxxxxxxxxx","P[^*]TAIRE[^*]{1,6}?LL",[trim]))),
    <<"xxxxxxxxxxx:xxxxxxxxx">> = iolist_to_binary(join(re:split("xxxxxxxxxxxPSTAIREISLLxxxxxxxxx","P[^*]TAIRE[^*]{1,6}?LL",[{parts,
                                                                                                                                                                                                                                                          2}]))),
    <<"xxxxxxxxxxx:xxxxxxxxx">> = iolist_to_binary(join(re:split("xxxxxxxxxxxPSTAIREISLLxxxxxxxxx","P[^*]TAIRE[^*]{1,6}?LL",[]))),
    <<"xxxxxxxxxxx:xxxxxxxxx">> = iolist_to_binary(join(re:split("xxxxxxxxxxxPSTAIREISLLxxxxxxxxx","P[^*]TAIRE[^*]{1,}?LL",[trim]))),
    <<"xxxxxxxxxxx:xxxxxxxxx">> = iolist_to_binary(join(re:split("xxxxxxxxxxxPSTAIREISLLxxxxxxxxx","P[^*]TAIRE[^*]{1,}?LL",[{parts,
                                                                                                                                                                                                                                                        2}]))),
    <<"xxxxxxxxxxx:xxxxxxxxx">> = iolist_to_binary(join(re:split("xxxxxxxxxxxPSTAIREISLLxxxxxxxxx","P[^*]TAIRE[^*]{1,}?LL",[]))),
    <<"1:.23">> = iolist_to_binary(join(re:split("1.230003938","(\\.\\d\\d[1-9]?)\\d+",[trim]))),
    <<"1:.23:">> = iolist_to_binary(join(re:split("1.230003938","(\\.\\d\\d[1-9]?)\\d+",[{parts,
                                                                                                                                                                                                                    2}]))),
    <<"1:.23:">> = iolist_to_binary(join(re:split("1.230003938","(\\.\\d\\d[1-9]?)\\d+",[]))),
    <<"1:.875">> = iolist_to_binary(join(re:split("1.875000282","(\\.\\d\\d[1-9]?)\\d+",[trim]))),
    <<"1:.875:">> = iolist_to_binary(join(re:split("1.875000282","(\\.\\d\\d[1-9]?)\\d+",[{parts,
                                                                                                                                                                                                                    2}]))),
    <<"1:.875:">> = iolist_to_binary(join(re:split("1.875000282","(\\.\\d\\d[1-9]?)\\d+",[]))),
    <<"1:.23">> = iolist_to_binary(join(re:split("1.235","(\\.\\d\\d[1-9]?)\\d+",[trim]))),
    <<"1:.23:">> = iolist_to_binary(join(re:split("1.235","(\\.\\d\\d[1-9]?)\\d+",[{parts,
                                                                                                                                                                                                        2}]))),
    <<"1:.23:">> = iolist_to_binary(join(re:split("1.235","(\\.\\d\\d[1-9]?)\\d+",[]))),
    <<"1:.23::0003938">> = iolist_to_binary(join(re:split("1.230003938","(\\.\\d\\d((?=0)|\\d(?=\\d)))",[trim]))),
    <<"1:.23::0003938">> = iolist_to_binary(join(re:split("1.230003938","(\\.\\d\\d((?=0)|\\d(?=\\d)))",[{parts,
                                                                                                                                                                                                                                     2}]))),
    <<"1:.23::0003938">> = iolist_to_binary(join(re:split("1.230003938","(\\.\\d\\d((?=0)|\\d(?=\\d)))",[]))),
    <<"1:.875:5:000282">> = iolist_to_binary(join(re:split("1.875000282","(\\.\\d\\d((?=0)|\\d(?=\\d)))",[trim]))),
    <<"1:.875:5:000282">> = iolist_to_binary(join(re:split("1.875000282","(\\.\\d\\d((?=0)|\\d(?=\\d)))",[{parts,
                                                                                                                                                                                                                                     2}]))),
    <<"1:.875:5:000282">> = iolist_to_binary(join(re:split("1.875000282","(\\.\\d\\d((?=0)|\\d(?=\\d)))",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(\\.\\d\\d((?=0)|\\d(?=\\d)))",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(\\.\\d\\d((?=0)|\\d(?=\\d)))",[{parts,
                                                                                                                                                                                                                                     2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(\\.\\d\\d((?=0)|\\d(?=\\d)))",[]))),
    <<"1.235">> = iolist_to_binary(join(re:split("1.235","(\\.\\d\\d((?=0)|\\d(?=\\d)))",[trim]))),
    <<"1.235">> = iolist_to_binary(join(re:split("1.235","(\\.\\d\\d((?=0)|\\d(?=\\d)))",[{parts,
                                                                                                                                                                                                                         2}]))),
    <<"1.235">> = iolist_to_binary(join(re:split("1.235","(\\.\\d\\d((?=0)|\\d(?=\\d)))",[]))),
    <<"">> = iolist_to_binary(join(re:split("ab","a(?)b",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("ab","a(?)b",[{parts,
                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("ab","a(?)b",[]))),
    <<"Food is on the :foo:table">> = iolist_to_binary(join(re:split("Food is on the foo table","\\b(foo)\\s+(\\w+)",[caseless,
                                                                                                                                                                                                                                     trim]))),
    <<"Food is on the :foo:table:">> = iolist_to_binary(join(re:split("Food is on the foo table","\\b(foo)\\s+(\\w+)",[caseless,
                                                                                                                                                                                                                                       {parts,
                                                                                                                                                                                                                                        2}]))),
    <<"Food is on the :foo:table:">> = iolist_to_binary(join(re:split("Food is on the foo table","\\b(foo)\\s+(\\w+)",[caseless]))),
    <<"The :d is under the bar in the :n.">> = iolist_to_binary(join(re:split("The food is under the bar in the barn.","foo(.*)bar",[trim]))),
    <<"The :d is under the bar in the :n.">> = iolist_to_binary(join(re:split("The food is under the bar in the barn.","foo(.*)bar",[{parts,
                                                                                                                                                                                                                                                2}]))),
    <<"The :d is under the bar in the :n.">> = iolist_to_binary(join(re:split("The food is under the bar in the barn.","foo(.*)bar",[]))),
    <<"The :d is under the : in the barn.">> = iolist_to_binary(join(re:split("The food is under the bar in the barn.","foo(.*?)bar",[trim]))),
    <<"The :d is under the : in the barn.">> = iolist_to_binary(join(re:split("The food is under the bar in the barn.","foo(.*?)bar",[{parts,
                                                                                                                                                                                                                                                  2}]))),
    <<"The :d is under the : in the barn.">> = iolist_to_binary(join(re:split("The food is under the bar in the barn.","foo(.*?)bar",[]))),
    <<":I have 2 numbers: 53147">> = iolist_to_binary(join(re:split("I have 2 numbers: 53147","(.*)(\\d*)",[trim]))),
    <<":I have 2 numbers: 53147::">> = iolist_to_binary(join(re:split("I have 2 numbers: 53147","(.*)(\\d*)",[{parts,
                                                                                                                                                                                                                   2}]))),
    <<":I have 2 numbers: 53147::">> = iolist_to_binary(join(re:split("I have 2 numbers: 53147","(.*)(\\d*)",[]))),
    <<":I have 2 numbers: 5314:7">> = iolist_to_binary(join(re:split("I have 2 numbers: 53147","(.*)(\\d+)",[trim]))),
    <<":I have 2 numbers: 5314:7:">> = iolist_to_binary(join(re:split("I have 2 numbers: 53147","(.*)(\\d+)",[{parts,
                                                                                                                                                                                                                   2}]))),
    <<":I have 2 numbers: 5314:7:">> = iolist_to_binary(join(re:split("I have 2 numbers: 53147","(.*)(\\d+)",[]))),
    <<":I::: :::h:::a:::v:::e::: :2:: :::n:::u:::m:::b:::e:::r:::s::::::: :53147">> = iolist_to_binary(join(re:split("I have 2 numbers: 53147","(.*?)(\\d*)",[trim]))),
    <<":I:: have 2 numbers: 53147">> = iolist_to_binary(join(re:split("I have 2 numbers: 53147","(.*?)(\\d*)",[{parts,
                                                                                                                                                                                                                     2}]))),
    <<":I::: :::h:::a:::v:::e::: :2:: :::n:::u:::m:::b:::e:::r:::s::::::: :53147:">> = iolist_to_binary(join(re:split("I have 2 numbers: 53147","(.*?)(\\d*)",[]))),
    <<":I have :2:: numbers: :53147">> = iolist_to_binary(join(re:split("I have 2 numbers: 53147","(.*?)(\\d+)",[trim]))),
    <<":I have :2: numbers: 53147">> = iolist_to_binary(join(re:split("I have 2 numbers: 53147","(.*?)(\\d+)",[{parts,
                                                                                                                                                                                                                     2}]))),
    <<":I have :2:: numbers: :53147:">> = iolist_to_binary(join(re:split("I have 2 numbers: 53147","(.*?)(\\d+)",[]))),
    <<":I have 2 numbers: 5314:7">> = iolist_to_binary(join(re:split("I have 2 numbers: 53147","(.*)(\\d+)$",[trim]))),
    <<":I have 2 numbers: 5314:7:">> = iolist_to_binary(join(re:split("I have 2 numbers: 53147","(.*)(\\d+)$",[{parts,
                                                                                                                                                                                                                      2}]))),
    <<":I have 2 numbers: 5314:7:">> = iolist_to_binary(join(re:split("I have 2 numbers: 53147","(.*)(\\d+)$",[]))),
    <<":I have 2 numbers: :53147">> = iolist_to_binary(join(re:split("I have 2 numbers: 53147","(.*?)(\\d+)$",[trim]))),
    <<":I have 2 numbers: :53147:">> = iolist_to_binary(join(re:split("I have 2 numbers: 53147","(.*?)(\\d+)$",[{parts,
                                                                                                                                                                                                                        2}]))),
    <<":I have 2 numbers: :53147:">> = iolist_to_binary(join(re:split("I have 2 numbers: 53147","(.*?)(\\d+)$",[]))),
    <<":I have 2 numbers: :53147">> = iolist_to_binary(join(re:split("I have 2 numbers: 53147","(.*)\\b(\\d+)$",[trim]))),
    <<":I have 2 numbers: :53147:">> = iolist_to_binary(join(re:split("I have 2 numbers: 53147","(.*)\\b(\\d+)$",[{parts,
                                                                                                                                                                                                                             2}]))),
    <<":I have 2 numbers: :53147:">> = iolist_to_binary(join(re:split("I have 2 numbers: 53147","(.*)\\b(\\d+)$",[]))),
    ok.
run8() ->
    <<":I have 2 numbers: :53147">> = iolist_to_binary(join(re:split("I have 2 numbers: 53147","(.*\\D)(\\d+)$",[trim]))),
    <<":I have 2 numbers: :53147:">> = iolist_to_binary(join(re:split("I have 2 numbers: 53147","(.*\\D)(\\d+)$",[{parts,
                                                                                                                                                                                                                             2}]))),
    <<":I have 2 numbers: :53147:">> = iolist_to_binary(join(re:split("I have 2 numbers: 53147","(.*\\D)(\\d+)$",[]))),
    <<":C123">> = iolist_to_binary(join(re:split("ABC123","^\\D*(?!123)",[trim]))),
    <<":C123">> = iolist_to_binary(join(re:split("ABC123","^\\D*(?!123)",[{parts,
                                                                                                                                                                                     2}]))),
    <<":C123">> = iolist_to_binary(join(re:split("ABC123","^\\D*(?!123)",[]))),
    <<":ABC:445">> = iolist_to_binary(join(re:split("ABC445","^(\\D*)(?=\\d)(?!123)",[trim]))),
    <<":ABC:445">> = iolist_to_binary(join(re:split("ABC445","^(\\D*)(?=\\d)(?!123)",[{parts,
                                                                                                                                                                                                        2}]))),
    <<":ABC:445">> = iolist_to_binary(join(re:split("ABC445","^(\\D*)(?=\\d)(?!123)",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(\\D*)(?=\\d)(?!123)",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(\\D*)(?=\\d)(?!123)",[{parts,
                                                                                                                                                                                                                  2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(\\D*)(?=\\d)(?!123)",[]))),
    <<"ABC123">> = iolist_to_binary(join(re:split("ABC123","^(\\D*)(?=\\d)(?!123)",[trim]))),
    <<"ABC123">> = iolist_to_binary(join(re:split("ABC123","^(\\D*)(?=\\d)(?!123)",[{parts,
                                                                                                                                                                                                        2}]))),
    <<"ABC123">> = iolist_to_binary(join(re:split("ABC123","^(\\D*)(?=\\d)(?!123)",[]))),
    <<":789">> = iolist_to_binary(join(re:split("W46]789","^[W-]46]",[trim]))),
    <<":789">> = iolist_to_binary(join(re:split("W46]789","^[W-]46]",[{parts,
                                                                                                                                                                              2}]))),
    <<":789">> = iolist_to_binary(join(re:split("W46]789","^[W-]46]",[]))),
    <<":789">> = iolist_to_binary(join(re:split("-46]789","^[W-]46]",[trim]))),
    <<":789">> = iolist_to_binary(join(re:split("-46]789","^[W-]46]",[{parts,
                                                                                                                                                                              2}]))),
    <<":789">> = iolist_to_binary(join(re:split("-46]789","^[W-]46]",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[W-]46]",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[W-]46]",[{parts,
                                                                                                                                                                                      2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[W-]46]",[]))),
    <<"Wall">> = iolist_to_binary(join(re:split("Wall","^[W-]46]",[trim]))),
    <<"Wall">> = iolist_to_binary(join(re:split("Wall","^[W-]46]",[{parts,
                                                                                                                                                                        2}]))),
    <<"Wall">> = iolist_to_binary(join(re:split("Wall","^[W-]46]",[]))),
    <<"Zebra">> = iolist_to_binary(join(re:split("Zebra","^[W-]46]",[trim]))),
    <<"Zebra">> = iolist_to_binary(join(re:split("Zebra","^[W-]46]",[{parts,
                                                                                                                                                                          2}]))),
    <<"Zebra">> = iolist_to_binary(join(re:split("Zebra","^[W-]46]",[]))),
    <<"42">> = iolist_to_binary(join(re:split("42","^[W-]46]",[trim]))),
    <<"42">> = iolist_to_binary(join(re:split("42","^[W-]46]",[{parts,
                                                                                                                                                                    2}]))),
    <<"42">> = iolist_to_binary(join(re:split("42","^[W-]46]",[]))),
    <<"[abcd]">> = iolist_to_binary(join(re:split("[abcd]","^[W-]46]",[trim]))),
    <<"[abcd]">> = iolist_to_binary(join(re:split("[abcd]","^[W-]46]",[{parts,
                                                                                                                                                                            2}]))),
    <<"[abcd]">> = iolist_to_binary(join(re:split("[abcd]","^[W-]46]",[]))),
    <<"]abcd[">> = iolist_to_binary(join(re:split("]abcd[","^[W-]46]",[trim]))),
    <<"]abcd[">> = iolist_to_binary(join(re:split("]abcd[","^[W-]46]",[{parts,
                                                                                                                                                                            2}]))),
    <<"]abcd[">> = iolist_to_binary(join(re:split("]abcd[","^[W-]46]",[]))),
    <<":46]789">> = iolist_to_binary(join(re:split("W46]789","^[W-\\]46]",[trim]))),
    <<":46]789">> = iolist_to_binary(join(re:split("W46]789","^[W-\\]46]",[{parts,
                                                                                                                                                                                   2}]))),
    <<":46]789">> = iolist_to_binary(join(re:split("W46]789","^[W-\\]46]",[]))),
    <<":all">> = iolist_to_binary(join(re:split("Wall","^[W-\\]46]",[trim]))),
    <<":all">> = iolist_to_binary(join(re:split("Wall","^[W-\\]46]",[{parts,
                                                                                                                                                                             2}]))),
    <<":all">> = iolist_to_binary(join(re:split("Wall","^[W-\\]46]",[]))),
    <<":ebra">> = iolist_to_binary(join(re:split("Zebra","^[W-\\]46]",[trim]))),
    <<":ebra">> = iolist_to_binary(join(re:split("Zebra","^[W-\\]46]",[{parts,
                                                                                                                                                                               2}]))),
    <<":ebra">> = iolist_to_binary(join(re:split("Zebra","^[W-\\]46]",[]))),
    <<":ylophone">> = iolist_to_binary(join(re:split("Xylophone","^[W-\\]46]",[trim]))),
    <<":ylophone">> = iolist_to_binary(join(re:split("Xylophone","^[W-\\]46]",[{parts,
                                                                                                                                                                                       2}]))),
    <<":ylophone">> = iolist_to_binary(join(re:split("Xylophone","^[W-\\]46]",[]))),
    <<":2">> = iolist_to_binary(join(re:split("42","^[W-\\]46]",[trim]))),
    <<":2">> = iolist_to_binary(join(re:split("42","^[W-\\]46]",[{parts,
                                                                                                                                                                         2}]))),
    <<":2">> = iolist_to_binary(join(re:split("42","^[W-\\]46]",[]))),
    <<":abcd]">> = iolist_to_binary(join(re:split("[abcd]","^[W-\\]46]",[trim]))),
    <<":abcd]">> = iolist_to_binary(join(re:split("[abcd]","^[W-\\]46]",[{parts,
                                                                                                                                                                                 2}]))),
    <<":abcd]">> = iolist_to_binary(join(re:split("[abcd]","^[W-\\]46]",[]))),
    <<":abcd[">> = iolist_to_binary(join(re:split("]abcd[","^[W-\\]46]",[trim]))),
    <<":abcd[">> = iolist_to_binary(join(re:split("]abcd[","^[W-\\]46]",[{parts,
                                                                                                                                                                                 2}]))),
    <<":abcd[">> = iolist_to_binary(join(re:split("]abcd[","^[W-\\]46]",[]))),
    <<":backslash">> = iolist_to_binary(join(re:split("\\backslash","^[W-\\]46]",[trim]))),
    <<":backslash">> = iolist_to_binary(join(re:split("\\backslash","^[W-\\]46]",[{parts,
                                                                                                                                                                                             2}]))),
    <<":backslash">> = iolist_to_binary(join(re:split("\\backslash","^[W-\\]46]",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[W-\\]46]",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[W-\\]46]",[{parts,
                                                                                                                                                                                           2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[W-\\]46]",[]))),
    <<"-46]789">> = iolist_to_binary(join(re:split("-46]789","^[W-\\]46]",[trim]))),
    <<"-46]789">> = iolist_to_binary(join(re:split("-46]789","^[W-\\]46]",[{parts,
                                                                                                                                                                                   2}]))),
    <<"-46]789">> = iolist_to_binary(join(re:split("-46]789","^[W-\\]46]",[]))),
    <<"well">> = iolist_to_binary(join(re:split("well","^[W-\\]46]",[trim]))),
    <<"well">> = iolist_to_binary(join(re:split("well","^[W-\\]46]",[{parts,
                                                                                                                                                                             2}]))),
    <<"well">> = iolist_to_binary(join(re:split("well","^[W-\\]46]",[]))),
    <<"">> = iolist_to_binary(join(re:split("word cat dog elephant mussel cow horse canary baboon snake shark otherword","word (?:[a-zA-Z0-9]+ ){0,10}otherword",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("word cat dog elephant mussel cow horse canary baboon snake shark otherword","word (?:[a-zA-Z0-9]+ ){0,10}otherword",[{parts,
                                                                                                                                                                                                                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("word cat dog elephant mussel cow horse canary baboon snake shark otherword","word (?:[a-zA-Z0-9]+ ){0,10}otherword",[]))),
    <<"word cat dog elephant mussel cow horse canary baboon snake shark">> = iolist_to_binary(join(re:split("word cat dog elephant mussel cow horse canary baboon snake shark","word (?:[a-zA-Z0-9]+ ){0,10}otherword",[trim]))),
    <<"word cat dog elephant mussel cow horse canary baboon snake shark">> = iolist_to_binary(join(re:split("word cat dog elephant mussel cow horse canary baboon snake shark","word (?:[a-zA-Z0-9]+ ){0,10}otherword",[{parts,
                                                                                                                                                                                                                                                                                                                                                          2}]))),
    <<"word cat dog elephant mussel cow horse canary baboon snake shark">> = iolist_to_binary(join(re:split("word cat dog elephant mussel cow horse canary baboon snake shark","word (?:[a-zA-Z0-9]+ ){0,10}otherword",[]))),
    <<"word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I hope">> = iolist_to_binary(join(re:split("word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I hope","word (?:[a-zA-Z0-9]+ ){0,300}otherword",[trim]))),
    <<"word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I hope">> = iolist_to_binary(join(re:split("word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I hope","word (?:[a-zA-Z0-9]+ ){0,300}otherword",[{parts,
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  2}]))),
    <<"word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I hope">> = iolist_to_binary(join(re:split("word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I hope","word (?:[a-zA-Z0-9]+ ){0,300}otherword",[]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){0,0}",[trim]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){0,0}",[{parts,
                                                                                                                                                                        2}]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){0,0}",[]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","^(a){0,0}",[trim]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","^(a){0,0}",[{parts,
                                                                                                                                                                        2}]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","^(a){0,0}",[]))),
    <<"aab">> = iolist_to_binary(join(re:split("aab","^(a){0,0}",[trim]))),
    <<"aab">> = iolist_to_binary(join(re:split("aab","^(a){0,0}",[{parts,
                                                                                                                                                                        2}]))),
    <<"aab">> = iolist_to_binary(join(re:split("aab","^(a){0,0}",[]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){0,1}",[trim]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){0,1}",[{parts,
                                                                                                                                                                        2}]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){0,1}",[]))),
    <<":a:bc">> = iolist_to_binary(join(re:split("abc","^(a){0,1}",[trim]))),
    <<":a:bc">> = iolist_to_binary(join(re:split("abc","^(a){0,1}",[{parts,
                                                                                                                                                                        2}]))),
    <<":a:bc">> = iolist_to_binary(join(re:split("abc","^(a){0,1}",[]))),
    <<":a:ab">> = iolist_to_binary(join(re:split("aab","^(a){0,1}",[trim]))),
    <<":a:ab">> = iolist_to_binary(join(re:split("aab","^(a){0,1}",[{parts,
                                                                                                                                                                        2}]))),
    <<":a:ab">> = iolist_to_binary(join(re:split("aab","^(a){0,1}",[]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){0,2}",[trim]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){0,2}",[{parts,
                                                                                                                                                                        2}]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){0,2}",[]))),
    <<":a:bc">> = iolist_to_binary(join(re:split("abc","^(a){0,2}",[trim]))),
    <<":a:bc">> = iolist_to_binary(join(re:split("abc","^(a){0,2}",[{parts,
                                                                                                                                                                        2}]))),
    <<":a:bc">> = iolist_to_binary(join(re:split("abc","^(a){0,2}",[]))),
    <<":a:b">> = iolist_to_binary(join(re:split("aab","^(a){0,2}",[trim]))),
    <<":a:b">> = iolist_to_binary(join(re:split("aab","^(a){0,2}",[{parts,
                                                                                                                                                                        2}]))),
    <<":a:b">> = iolist_to_binary(join(re:split("aab","^(a){0,2}",[]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){0,3}",[trim]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){0,3}",[{parts,
                                                                                                                                                                        2}]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){0,3}",[]))),
    <<":a:bc">> = iolist_to_binary(join(re:split("abc","^(a){0,3}",[trim]))),
    <<":a:bc">> = iolist_to_binary(join(re:split("abc","^(a){0,3}",[{parts,
                                                                                                                                                                        2}]))),
    <<":a:bc">> = iolist_to_binary(join(re:split("abc","^(a){0,3}",[]))),
    <<":a:b">> = iolist_to_binary(join(re:split("aab","^(a){0,3}",[trim]))),
    <<":a:b">> = iolist_to_binary(join(re:split("aab","^(a){0,3}",[{parts,
                                                                                                                                                                        2}]))),
    <<":a:b">> = iolist_to_binary(join(re:split("aab","^(a){0,3}",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aaa","^(a){0,3}",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaa","^(a){0,3}",[{parts,
                                                                                                                                                                        2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaa","^(a){0,3}",[]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){0,}",[trim]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){0,}",[{parts,
                                                                                                                                                                      2}]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){0,}",[]))),
    <<":a:bc">> = iolist_to_binary(join(re:split("abc","^(a){0,}",[trim]))),
    <<":a:bc">> = iolist_to_binary(join(re:split("abc","^(a){0,}",[{parts,
                                                                                                                                                                      2}]))),
    <<":a:bc">> = iolist_to_binary(join(re:split("abc","^(a){0,}",[]))),
    <<":a:b">> = iolist_to_binary(join(re:split("aab","^(a){0,}",[trim]))),
    <<":a:b">> = iolist_to_binary(join(re:split("aab","^(a){0,}",[{parts,
                                                                                                                                                                      2}]))),
    <<":a:b">> = iolist_to_binary(join(re:split("aab","^(a){0,}",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aaa","^(a){0,}",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaa","^(a){0,}",[{parts,
                                                                                                                                                                      2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaa","^(a){0,}",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aaaaaaaa","^(a){0,}",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaaaaaaa","^(a){0,}",[{parts,
                                                                                                                                                                                2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaaaaaaa","^(a){0,}",[]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){1,1}",[trim]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){1,1}",[{parts,
                                                                                                                                                                        2}]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){1,1}",[]))),
    <<":a:bc">> = iolist_to_binary(join(re:split("abc","^(a){1,1}",[trim]))),
    <<":a:bc">> = iolist_to_binary(join(re:split("abc","^(a){1,1}",[{parts,
                                                                                                                                                                        2}]))),
    <<":a:bc">> = iolist_to_binary(join(re:split("abc","^(a){1,1}",[]))),
    <<":a:ab">> = iolist_to_binary(join(re:split("aab","^(a){1,1}",[trim]))),
    <<":a:ab">> = iolist_to_binary(join(re:split("aab","^(a){1,1}",[{parts,
                                                                                                                                                                        2}]))),
    <<":a:ab">> = iolist_to_binary(join(re:split("aab","^(a){1,1}",[]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){1,2}",[trim]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){1,2}",[{parts,
                                                                                                                                                                        2}]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){1,2}",[]))),
    <<":a:bc">> = iolist_to_binary(join(re:split("abc","^(a){1,2}",[trim]))),
    <<":a:bc">> = iolist_to_binary(join(re:split("abc","^(a){1,2}",[{parts,
                                                                                                                                                                        2}]))),
    <<":a:bc">> = iolist_to_binary(join(re:split("abc","^(a){1,2}",[]))),
    <<":a:b">> = iolist_to_binary(join(re:split("aab","^(a){1,2}",[trim]))),
    <<":a:b">> = iolist_to_binary(join(re:split("aab","^(a){1,2}",[{parts,
                                                                                                                                                                        2}]))),
    <<":a:b">> = iolist_to_binary(join(re:split("aab","^(a){1,2}",[]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){1,3}",[trim]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){1,3}",[{parts,
                                                                                                                                                                        2}]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){1,3}",[]))),
    <<":a:bc">> = iolist_to_binary(join(re:split("abc","^(a){1,3}",[trim]))),
    <<":a:bc">> = iolist_to_binary(join(re:split("abc","^(a){1,3}",[{parts,
                                                                                                                                                                        2}]))),
    <<":a:bc">> = iolist_to_binary(join(re:split("abc","^(a){1,3}",[]))),
    <<":a:b">> = iolist_to_binary(join(re:split("aab","^(a){1,3}",[trim]))),
    <<":a:b">> = iolist_to_binary(join(re:split("aab","^(a){1,3}",[{parts,
                                                                                                                                                                        2}]))),
    <<":a:b">> = iolist_to_binary(join(re:split("aab","^(a){1,3}",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aaa","^(a){1,3}",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaa","^(a){1,3}",[{parts,
                                                                                                                                                                        2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaa","^(a){1,3}",[]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){1,}",[trim]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){1,}",[{parts,
                                                                                                                                                                      2}]))),
    <<"bcd">> = iolist_to_binary(join(re:split("bcd","^(a){1,}",[]))),
    <<":a:bc">> = iolist_to_binary(join(re:split("abc","^(a){1,}",[trim]))),
    <<":a:bc">> = iolist_to_binary(join(re:split("abc","^(a){1,}",[{parts,
                                                                                                                                                                      2}]))),
    <<":a:bc">> = iolist_to_binary(join(re:split("abc","^(a){1,}",[]))),
    <<":a:b">> = iolist_to_binary(join(re:split("aab","^(a){1,}",[trim]))),
    <<":a:b">> = iolist_to_binary(join(re:split("aab","^(a){1,}",[{parts,
                                                                                                                                                                      2}]))),
    <<":a:b">> = iolist_to_binary(join(re:split("aab","^(a){1,}",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aaa","^(a){1,}",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaa","^(a){1,}",[{parts,
                                                                                                                                                                      2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaa","^(a){1,}",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aaaaaaaa","^(a){1,}",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaaaaaaa","^(a){1,}",[{parts,
                                                                                                                                                                                2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaaaaaaa","^(a){1,}",[]))),
    <<"borfle
:
no">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*\\.gif",[trim]))),
    <<"borfle
:
no">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*\\.gif",[{parts,2}]))),
    <<"borfle
:
no">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*\\.gif",[]))),
    <<"borfle
:
no">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".{0,}\\.gif",[trim]))),
    <<"borfle
:
no">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".{0,}\\.gif",[{parts,2}]))),
    <<"borfle
:
no">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".{0,}\\.gif",[]))),
    <<"borfle
:
no">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*\\.gif",[multiline,trim]))),
    <<"borfle
:
no">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*\\.gif",[multiline,{parts,2}]))),
    <<"borfle
:
no">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*\\.gif",[multiline]))),
    ok.
run9() ->
    <<":
no">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*\\.gif",[dotall,trim]))),
    <<":
no">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*\\.gif",[dotall,{parts,2}]))),
    <<":
no">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*\\.gif",[dotall]))),
    <<":
no">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*\\.gif",[multiline,dotall,trim]))),
    <<":
no">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*\\.gif",[multiline,dotall,{parts,2}]))),
    <<":
no">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*\\.gif",[multiline,dotall]))),
    <<"borfle
bib.gif
">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*$",[trim]))),
    <<"borfle
bib.gif
:">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*$",[{parts,2}]))),
    <<"borfle
bib.gif
:">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*$",[]))),
    <<":
:
">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*$",[multiline,trim]))),
    <<":
bib.gif
no">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*$",[multiline,{parts,2}]))),
    <<":
:
:">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*$",[multiline]))),
    <<"">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*$",[dotall,trim]))),
    <<":">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*$",[dotall,{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*$",[dotall]))),
    <<"">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*$",[multiline,dotall,trim]))),
    <<":">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*$",[multiline,dotall,{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*$",[multiline,dotall]))),
    <<"borfle
bib.gif
">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*$",[trim]))),
    <<"borfle
bib.gif
:">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*$",[{parts,2}]))),
    <<"borfle
bib.gif
:">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*$",[]))),
    <<":
:
">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*$",[multiline,trim]))),
    <<":
bib.gif
no">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*$",[multiline,{parts,2}]))),
    <<":
:
:">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*$",[multiline]))),
    <<"">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*$",[dotall,trim]))),
    <<":">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*$",[dotall,{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*$",[dotall]))),
    <<"">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*$",[multiline,dotall,trim]))),
    <<":">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*$",[multiline,dotall,{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("borfle
bib.gif
no",".*$",[multiline,dotall]))),
    <<"abcde
:1234X:yz">> = iolist_to_binary(join(re:split("abcde
1234Xyz","(.*X|^B)",[trim]))),
    <<"abcde
:1234X:yz">> = iolist_to_binary(join(re:split("abcde
1234Xyz","(.*X|^B)",[{parts,2}]))),
    <<"abcde
:1234X:yz">> = iolist_to_binary(join(re:split("abcde
1234Xyz","(.*X|^B)",[]))),
    <<":B:arFoo">> = iolist_to_binary(join(re:split("BarFoo","(.*X|^B)",[trim]))),
    <<":B:arFoo">> = iolist_to_binary(join(re:split("BarFoo","(.*X|^B)",[{parts,
                                                                                                                                                                            2}]))),
    <<":B:arFoo">> = iolist_to_binary(join(re:split("BarFoo","(.*X|^B)",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(.*X|^B)",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(.*X|^B)",[{parts,
                                                                                                                                                                                      2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(.*X|^B)",[]))),
    <<"abcde
Bar">> = iolist_to_binary(join(re:split("abcde
Bar","(.*X|^B)",[trim]))),
    <<"abcde
Bar">> = iolist_to_binary(join(re:split("abcde
Bar","(.*X|^B)",[{parts,2}]))),
    <<"abcde
Bar">> = iolist_to_binary(join(re:split("abcde
Bar","(.*X|^B)",[]))),
    <<"abcde
:1234X:yz">> = iolist_to_binary(join(re:split("abcde
1234Xyz","(.*X|^B)",[multiline,trim]))),
    <<"abcde
:1234X:yz">> = iolist_to_binary(join(re:split("abcde
1234Xyz","(.*X|^B)",[multiline,{parts,2}]))),
    <<"abcde
:1234X:yz">> = iolist_to_binary(join(re:split("abcde
1234Xyz","(.*X|^B)",[multiline]))),
    <<":B:arFoo">> = iolist_to_binary(join(re:split("BarFoo","(.*X|^B)",[multiline,
                                                                                                                                                                          trim]))),
    <<":B:arFoo">> = iolist_to_binary(join(re:split("BarFoo","(.*X|^B)",[multiline,
                                                                                                                                                                            {parts,
                                                                                                                                                                             2}]))),
    <<":B:arFoo">> = iolist_to_binary(join(re:split("BarFoo","(.*X|^B)",[multiline]))),
    <<"abcde
:B:ar">> = iolist_to_binary(join(re:split("abcde
Bar","(.*X|^B)",[multiline,trim]))),
    <<"abcde
:B:ar">> = iolist_to_binary(join(re:split("abcde
Bar","(.*X|^B)",[multiline,{parts,2}]))),
    <<"abcde
:B:ar">> = iolist_to_binary(join(re:split("abcde
Bar","(.*X|^B)",[multiline]))),
    <<":abcde
1234X:yz">> = iolist_to_binary(join(re:split("abcde
1234Xyz","(.*X|^B)",[dotall,trim]))),
    <<":abcde
1234X:yz">> = iolist_to_binary(join(re:split("abcde
1234Xyz","(.*X|^B)",[dotall,{parts,2}]))),
    <<":abcde
1234X:yz">> = iolist_to_binary(join(re:split("abcde
1234Xyz","(.*X|^B)",[dotall]))),
    <<":B:arFoo">> = iolist_to_binary(join(re:split("BarFoo","(.*X|^B)",[dotall,
                                                                                                                                                                          trim]))),
    <<":B:arFoo">> = iolist_to_binary(join(re:split("BarFoo","(.*X|^B)",[dotall,
                                                                                                                                                                            {parts,
                                                                                                                                                                             2}]))),
    <<":B:arFoo">> = iolist_to_binary(join(re:split("BarFoo","(.*X|^B)",[dotall]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(.*X|^B)",[dotall,
                                                                                                                                                                                    trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(.*X|^B)",[dotall,
                                                                                                                                                                                      {parts,
                                                                                                                                                                                       2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(.*X|^B)",[dotall]))),
    <<"abcde
Bar">> = iolist_to_binary(join(re:split("abcde
Bar","(.*X|^B)",[dotall,trim]))),
    <<"abcde
Bar">> = iolist_to_binary(join(re:split("abcde
Bar","(.*X|^B)",[dotall,{parts,2}]))),
    <<"abcde
Bar">> = iolist_to_binary(join(re:split("abcde
Bar","(.*X|^B)",[dotall]))),
    <<":abcde
1234X:yz">> = iolist_to_binary(join(re:split("abcde
1234Xyz","(.*X|^B)",[multiline,dotall,trim]))),
    <<":abcde
1234X:yz">> = iolist_to_binary(join(re:split("abcde
1234Xyz","(.*X|^B)",[multiline,dotall,{parts,2}]))),
    <<":abcde
1234X:yz">> = iolist_to_binary(join(re:split("abcde
1234Xyz","(.*X|^B)",[multiline,dotall]))),
    <<":B:arFoo">> = iolist_to_binary(join(re:split("BarFoo","(.*X|^B)",[multiline,
                                                                                                                                                                           dotall,
                                                                                                                                                                           trim]))),
    <<":B:arFoo">> = iolist_to_binary(join(re:split("BarFoo","(.*X|^B)",[multiline,
                                                                                                                                                                             dotall,
                                                                                                                                                                             {parts,
                                                                                                                                                                              2}]))),
    <<":B:arFoo">> = iolist_to_binary(join(re:split("BarFoo","(.*X|^B)",[multiline,
                                                                                                                                                                              dotall]))),
    <<"abcde
:B:ar">> = iolist_to_binary(join(re:split("abcde
Bar","(.*X|^B)",[multiline,dotall,trim]))),
    <<"abcde
:B:ar">> = iolist_to_binary(join(re:split("abcde
Bar","(.*X|^B)",[multiline,dotall,{parts,2}]))),
    <<"abcde
:B:ar">> = iolist_to_binary(join(re:split("abcde
Bar","(.*X|^B)",[multiline,dotall]))),
    <<":abcde
1234X:yz">> = iolist_to_binary(join(re:split("abcde
1234Xyz","(?s)(.*X|^B)",[trim]))),
    <<":abcde
1234X:yz">> = iolist_to_binary(join(re:split("abcde
1234Xyz","(?s)(.*X|^B)",[{parts,2}]))),
    <<":abcde
1234X:yz">> = iolist_to_binary(join(re:split("abcde
1234Xyz","(?s)(.*X|^B)",[]))),
    <<":B:arFoo">> = iolist_to_binary(join(re:split("BarFoo","(?s)(.*X|^B)",[trim]))),
    <<":B:arFoo">> = iolist_to_binary(join(re:split("BarFoo","(?s)(.*X|^B)",[{parts,
                                                                                                                                                                                    2}]))),
    <<":B:arFoo">> = iolist_to_binary(join(re:split("BarFoo","(?s)(.*X|^B)",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?s)(.*X|^B)",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?s)(.*X|^B)",[{parts,
                                                                                                                                                                                              2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?s)(.*X|^B)",[]))),
    <<"abcde
Bar">> = iolist_to_binary(join(re:split("abcde
Bar","(?s)(.*X|^B)",[trim]))),
    <<"abcde
Bar">> = iolist_to_binary(join(re:split("abcde
Bar","(?s)(.*X|^B)",[{parts,2}]))),
    <<"abcde
Bar">> = iolist_to_binary(join(re:split("abcde
Bar","(?s)(.*X|^B)",[]))),
    <<":yz">> = iolist_to_binary(join(re:split("abcde
1234Xyz","(?s:.*X|^B)",[trim]))),
    <<":yz">> = iolist_to_binary(join(re:split("abcde
1234Xyz","(?s:.*X|^B)",[{parts,2}]))),
    <<":yz">> = iolist_to_binary(join(re:split("abcde
1234Xyz","(?s:.*X|^B)",[]))),
    <<":arFoo">> = iolist_to_binary(join(re:split("BarFoo","(?s:.*X|^B)",[trim]))),
    <<":arFoo">> = iolist_to_binary(join(re:split("BarFoo","(?s:.*X|^B)",[{parts,
                                                                                                                                                                                  2}]))),
    <<":arFoo">> = iolist_to_binary(join(re:split("BarFoo","(?s:.*X|^B)",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?s:.*X|^B)",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?s:.*X|^B)",[{parts,
                                                                                                                                                                                            2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?s:.*X|^B)",[]))),
    <<"abcde
Bar">> = iolist_to_binary(join(re:split("abcde
Bar","(?s:.*X|^B)",[trim]))),
    <<"abcde
Bar">> = iolist_to_binary(join(re:split("abcde
Bar","(?s:.*X|^B)",[{parts,2}]))),
    <<"abcde
Bar">> = iolist_to_binary(join(re:split("abcde
Bar","(?s:.*X|^B)",[]))),
    <<"**** Failers">> = iolist_to_binary(join(re:split("**** Failers","^.*B",[trim]))),
    <<"**** Failers">> = iolist_to_binary(join(re:split("**** Failers","^.*B",[{parts,
                                                                                                                                                                                2}]))),
    <<"**** Failers">> = iolist_to_binary(join(re:split("**** Failers","^.*B",[]))),
    <<"abc
B">> = iolist_to_binary(join(re:split("abc
B","^.*B",[trim]))),
    <<"abc
B">> = iolist_to_binary(join(re:split("abc
B","^.*B",[{parts,2}]))),
    <<"abc
B">> = iolist_to_binary(join(re:split("abc
B","^.*B",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc
B","(?s)^.*B",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc
B","(?s)^.*B",[{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc
B","(?s)^.*B",[]))),
    <<"abc
">> = iolist_to_binary(join(re:split("abc
B","(?m)^.*B",[trim]))),
    <<"abc
:">> = iolist_to_binary(join(re:split("abc
B","(?m)^.*B",[{parts,2}]))),
    <<"abc
:">> = iolist_to_binary(join(re:split("abc
B","(?m)^.*B",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc
B","(?ms)^.*B",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc
B","(?ms)^.*B",[{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc
B","(?ms)^.*B",[]))),
    ok.
run10() ->
    <<"abc
">> = iolist_to_binary(join(re:split("abc
B","(?ms)^B",[trim]))),
    <<"abc
:">> = iolist_to_binary(join(re:split("abc
B","(?ms)^B",[{parts,2}]))),
    <<"abc
:">> = iolist_to_binary(join(re:split("abc
B","(?ms)^B",[]))),
    <<"">> = iolist_to_binary(join(re:split("B","(?s)B$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("B","(?s)B$",[{parts,
                                                                                                                                                               2}]))),
    <<":">> = iolist_to_binary(join(re:split("B","(?s)B$",[]))),
    <<"">> = iolist_to_binary(join(re:split("123456654321","^[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("123456654321","^[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]",[{parts,
                                                                                                                                                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("123456654321","^[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]",[]))),
    <<"">> = iolist_to_binary(join(re:split("123456654321","^\\d\\d\\d\\d\\d\\d\\d\\d\\d\\d\\d\\d",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("123456654321","^\\d\\d\\d\\d\\d\\d\\d\\d\\d\\d\\d\\d",[{parts,
                                                                                                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("123456654321","^\\d\\d\\d\\d\\d\\d\\d\\d\\d\\d\\d\\d",[]))),
    <<"">> = iolist_to_binary(join(re:split("123456654321","^[\\d][\\d][\\d][\\d][\\d][\\d][\\d][\\d][\\d][\\d][\\d][\\d]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("123456654321","^[\\d][\\d][\\d][\\d][\\d][\\d][\\d][\\d][\\d][\\d][\\d][\\d]",[{parts,
                                                                                                                                                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("123456654321","^[\\d][\\d][\\d][\\d][\\d][\\d][\\d][\\d][\\d][\\d][\\d][\\d]",[]))),
    <<"">> = iolist_to_binary(join(re:split("abcabcabcabc","^[abc]{12}",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abcabcabcabc","^[abc]{12}",[{parts,
                                                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("abcabcabcabc","^[abc]{12}",[]))),
    <<"">> = iolist_to_binary(join(re:split("abcabcabcabc","^[a-c]{12}",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abcabcabcabc","^[a-c]{12}",[{parts,
                                                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("abcabcabcabc","^[a-c]{12}",[]))),
    <<":c">> = iolist_to_binary(join(re:split("abcabcabcabc","^(a|b|c){12}",[trim]))),
    <<":c:">> = iolist_to_binary(join(re:split("abcabcabcabc","^(a|b|c){12}",[{parts,
                                                                                                                                                                                                2}]))),
    <<":c:">> = iolist_to_binary(join(re:split("abcabcabcabc","^(a|b|c){12}",[]))),
    <<"">> = iolist_to_binary(join(re:split("n","^[abcdefghijklmnopqrstuvwxy0123456789]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("n","^[abcdefghijklmnopqrstuvwxy0123456789]",[{parts,
                                                                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("n","^[abcdefghijklmnopqrstuvwxy0123456789]",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[abcdefghijklmnopqrstuvwxy0123456789]",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[abcdefghijklmnopqrstuvwxy0123456789]",[{parts,
                                                                                                                                                                                                                                                  2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[abcdefghijklmnopqrstuvwxy0123456789]",[]))),
    <<"z">> = iolist_to_binary(join(re:split("z","^[abcdefghijklmnopqrstuvwxy0123456789]",[trim]))),
    <<"z">> = iolist_to_binary(join(re:split("z","^[abcdefghijklmnopqrstuvwxy0123456789]",[{parts,
                                                                                                                                                                                                                              2}]))),
    <<"z">> = iolist_to_binary(join(re:split("z","^[abcdefghijklmnopqrstuvwxy0123456789]",[]))),
    <<"">> = iolist_to_binary(join(re:split("abcd","abcde{0,0}",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abcd","abcde{0,0}",[{parts,
                                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("abcd","abcde{0,0}",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","abcde{0,0}",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","abcde{0,0}",[{parts,
                                                                                                                                                                                          2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","abcde{0,0}",[]))),
    <<"abce">> = iolist_to_binary(join(re:split("abce","abcde{0,0}",[trim]))),
    <<"abce">> = iolist_to_binary(join(re:split("abce","abcde{0,0}",[{parts,
                                                                                                                                                                            2}]))),
    <<"abce">> = iolist_to_binary(join(re:split("abce","abcde{0,0}",[]))),
    <<"">> = iolist_to_binary(join(re:split("abe","ab[cd]{0,0}e",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abe","ab[cd]{0,0}e",[{parts,
                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("abe","ab[cd]{0,0}e",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","ab[cd]{0,0}e",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","ab[cd]{0,0}e",[{parts,
                                                                                                                                                                                              2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","ab[cd]{0,0}e",[]))),
    <<"abcde">> = iolist_to_binary(join(re:split("abcde","ab[cd]{0,0}e",[trim]))),
    <<"abcde">> = iolist_to_binary(join(re:split("abcde","ab[cd]{0,0}e",[{parts,
                                                                                                                                                                                  2}]))),
    <<"abcde">> = iolist_to_binary(join(re:split("abcde","ab[cd]{0,0}e",[]))),
    <<"">> = iolist_to_binary(join(re:split("abd","ab(c){0,0}d",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("abd","ab(c){0,0}d",[{parts,
                                                                                                                                                                            2}]))),
    <<"::">> = iolist_to_binary(join(re:split("abd","ab(c){0,0}d",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","ab(c){0,0}d",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","ab(c){0,0}d",[{parts,
                                                                                                                                                                                            2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","ab(c){0,0}d",[]))),
    <<"abcd">> = iolist_to_binary(join(re:split("abcd","ab(c){0,0}d",[trim]))),
    <<"abcd">> = iolist_to_binary(join(re:split("abcd","ab(c){0,0}d",[{parts,
                                                                                                                                                                              2}]))),
    <<"abcd">> = iolist_to_binary(join(re:split("abcd","ab(c){0,0}d",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","a(b*)",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("a","a(b*)",[{parts,
                                                                                                                                                            2}]))),
    <<"::">> = iolist_to_binary(join(re:split("a","a(b*)",[]))),
    <<":b">> = iolist_to_binary(join(re:split("ab","a(b*)",[trim]))),
    <<":b:">> = iolist_to_binary(join(re:split("ab","a(b*)",[{parts,
                                                                                                                                                              2}]))),
    <<":b:">> = iolist_to_binary(join(re:split("ab","a(b*)",[]))),
    <<":bbbb">> = iolist_to_binary(join(re:split("abbbb","a(b*)",[trim]))),
    <<":bbbb:">> = iolist_to_binary(join(re:split("abbbb","a(b*)",[{parts,
                                                                                                                                                                    2}]))),
    <<":bbbb:">> = iolist_to_binary(join(re:split("abbbb","a(b*)",[]))),
    <<"*** F::ilers">> = iolist_to_binary(join(re:split("*** Failers","a(b*)",[trim]))),
    <<"*** F::ilers">> = iolist_to_binary(join(re:split("*** Failers","a(b*)",[{parts,
                                                                                                                                                                                2}]))),
    <<"*** F::ilers">> = iolist_to_binary(join(re:split("*** Failers","a(b*)",[]))),
    <<"bbbbb">> = iolist_to_binary(join(re:split("bbbbb","a(b*)",[trim]))),
    <<"bbbbb">> = iolist_to_binary(join(re:split("bbbbb","a(b*)",[{parts,
                                                                                                                                                                    2}]))),
    <<"bbbbb">> = iolist_to_binary(join(re:split("bbbbb","a(b*)",[]))),
    <<"">> = iolist_to_binary(join(re:split("abe","ab\\d{0}e",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abe","ab\\d{0}e",[{parts,
                                                                                                                                                                         2}]))),
    <<":">> = iolist_to_binary(join(re:split("abe","ab\\d{0}e",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","ab\\d{0}e",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","ab\\d{0}e",[{parts,
                                                                                                                                                                                         2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","ab\\d{0}e",[]))),
    <<"ab1e">> = iolist_to_binary(join(re:split("ab1e","ab\\d{0}e",[trim]))),
    <<"ab1e">> = iolist_to_binary(join(re:split("ab1e","ab\\d{0}e",[{parts,
                                                                                                                                                                           2}]))),
    <<"ab1e">> = iolist_to_binary(join(re:split("ab1e","ab\\d{0}e",[]))),
    <<"the :quick: brown fox">> = iolist_to_binary(join(re:split("the \"quick\" brown fox","\"([^\\\\\"]+|\\\\.)*\"",[trim]))),
    <<"the :quick: brown fox">> = iolist_to_binary(join(re:split("the \"quick\" brown fox","\"([^\\\\\"]+|\\\\.)*\"",[{parts,
                                                                                                                                                                                                                                                       2}]))),
    <<"the :quick: brown fox">> = iolist_to_binary(join(re:split("the \"quick\" brown fox","\"([^\\\\\"]+|\\\\.)*\"",[]))),
    <<": brown fox">> = iolist_to_binary(join(re:split("\"the \\\"quick\\\" brown fox\"","\"([^\\\\\"]+|\\\\.)*\"",[trim]))),
    <<": brown fox:">> = iolist_to_binary(join(re:split("\"the \\\"quick\\\" brown fox\"","\"([^\\\\\"]+|\\\\.)*\"",[{parts,
                                                                                                                                                                                                                                                                               2}]))),
    <<": brown fox:">> = iolist_to_binary(join(re:split("\"the \\\"quick\\\" brown fox\"","\"([^\\\\\"]+|\\\\.)*\"",[]))),
    <<"a:b:c">> = iolist_to_binary(join(re:split("abc","",[trim]))),
    <<"a:bc">> = iolist_to_binary(join(re:split("abc","",[{parts,
                                                                                                                                                      2}]))),
    <<"a:b:c:">> = iolist_to_binary(join(re:split("abc","",[]))),
    <<"">> = iolist_to_binary(join(re:split("acb","a[^a]b",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("acb","a[^a]b",[{parts,
                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("acb","a[^a]b",[]))),
    <<"">> = iolist_to_binary(join(re:split("a
b","a[^a]b",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a
b","a[^a]b",[{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("a
b","a[^a]b",[]))),
    <<"">> = iolist_to_binary(join(re:split("acb","a.b",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("acb","a.b",[{parts,
                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("acb","a.b",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a.b",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a.b",[{parts,
                                                                                                                                                                            2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a.b",[]))),
    <<"a
b">> = iolist_to_binary(join(re:split("a
b","a.b",[trim]))),
    <<"a
b">> = iolist_to_binary(join(re:split("a
b","a.b",[{parts,2}]))),
    <<"a
b">> = iolist_to_binary(join(re:split("a
b","a.b",[]))),
    <<"">> = iolist_to_binary(join(re:split("acb","a[^a]b",[dotall,
                                                                                                                                                                trim]))),
    <<":">> = iolist_to_binary(join(re:split("acb","a[^a]b",[dotall,
                                                                                                                                                                  {parts,
                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("acb","a[^a]b",[dotall]))),
    <<"">> = iolist_to_binary(join(re:split("a
b","a[^a]b",[dotall,trim]))),
    <<":">> = iolist_to_binary(join(re:split("a
b","a[^a]b",[dotall,{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("a
b","a[^a]b",[dotall]))),
    ok.
run11() ->
    <<"">> = iolist_to_binary(join(re:split("acb","a.b",[dotall,
                                                                                                                                                          trim]))),
    <<":">> = iolist_to_binary(join(re:split("acb","a.b",[dotall,
                                                                                                                                                            {parts,
                                                                                                                                                             2}]))),
    <<":">> = iolist_to_binary(join(re:split("acb","a.b",[dotall]))),
    <<"">> = iolist_to_binary(join(re:split("a
b","a.b",[dotall,trim]))),
    <<":">> = iolist_to_binary(join(re:split("a
b","a.b",[dotall,{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("a
b","a.b",[dotall]))),
    <<":a">> = iolist_to_binary(join(re:split("bac","^(b+?|a){1,2}?c",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("bac","^(b+?|a){1,2}?c",[{parts,
                                                                                                                                                                                    2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("bac","^(b+?|a){1,2}?c",[]))),
    <<":a">> = iolist_to_binary(join(re:split("bbac","^(b+?|a){1,2}?c",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("bbac","^(b+?|a){1,2}?c",[{parts,
                                                                                                                                                                                      2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("bbac","^(b+?|a){1,2}?c",[]))),
    <<":a">> = iolist_to_binary(join(re:split("bbbac","^(b+?|a){1,2}?c",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("bbbac","^(b+?|a){1,2}?c",[{parts,
                                                                                                                                                                                        2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("bbbac","^(b+?|a){1,2}?c",[]))),
    <<":a">> = iolist_to_binary(join(re:split("bbbbac","^(b+?|a){1,2}?c",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("bbbbac","^(b+?|a){1,2}?c",[{parts,
                                                                                                                                                                                          2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("bbbbac","^(b+?|a){1,2}?c",[]))),
    <<":a">> = iolist_to_binary(join(re:split("bbbbbac","^(b+?|a){1,2}?c",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("bbbbbac","^(b+?|a){1,2}?c",[{parts,
                                                                                                                                                                                            2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("bbbbbac","^(b+?|a){1,2}?c",[]))),
    <<":a">> = iolist_to_binary(join(re:split("bac","^(b+|a){1,2}?c",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("bac","^(b+|a){1,2}?c",[{parts,
                                                                                                                                                                                  2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("bac","^(b+|a){1,2}?c",[]))),
    <<":a">> = iolist_to_binary(join(re:split("bbac","^(b+|a){1,2}?c",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("bbac","^(b+|a){1,2}?c",[{parts,
                                                                                                                                                                                    2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("bbac","^(b+|a){1,2}?c",[]))),
    <<":a">> = iolist_to_binary(join(re:split("bbbac","^(b+|a){1,2}?c",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("bbbac","^(b+|a){1,2}?c",[{parts,
                                                                                                                                                                                      2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("bbbac","^(b+|a){1,2}?c",[]))),
    <<":a">> = iolist_to_binary(join(re:split("bbbbac","^(b+|a){1,2}?c",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("bbbbac","^(b+|a){1,2}?c",[{parts,
                                                                                                                                                                                        2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("bbbbac","^(b+|a){1,2}?c",[]))),
    <<":a">> = iolist_to_binary(join(re:split("bbbbbac","^(b+|a){1,2}?c",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("bbbbbac","^(b+|a){1,2}?c",[{parts,
                                                                                                                                                                                          2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("bbbbbac","^(b+|a){1,2}?c",[]))),
    <<"x
b">> = iolist_to_binary(join(re:split("x
b","(?!\\A)x",[multiline,trim]))),
    <<"x
b">> = iolist_to_binary(join(re:split("x
b","(?!\\A)x",[multiline,{parts,2}]))),
    <<"x
b">> = iolist_to_binary(join(re:split("x
b","(?!\\A)x",[multiline]))),
    <<"a">> = iolist_to_binary(join(re:split("ax","(?!\\A)x",[multiline,
                                                                                                                                                                     trim]))),
    <<"a:">> = iolist_to_binary(join(re:split("ax","(?!\\A)x",[multiline,
                                                                                                                                                                       {parts,
                                                                                                                                                                        2}]))),
    <<"a:">> = iolist_to_binary(join(re:split("ax","(?!\\A)x",[multiline]))),
    <<"{ab}">> = iolist_to_binary(join(re:split("{ab}","\\x0{ab}",[trim]))),
    <<"{ab}">> = iolist_to_binary(join(re:split("{ab}","\\x0{ab}",[{parts,
                                                                                                                                                                           2}]))),
    <<"{ab}">> = iolist_to_binary(join(re:split("{ab}","\\x0{ab}",[]))),
    <<"">> = iolist_to_binary(join(re:split("CD","(A|B)*?CD",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("CD","(A|B)*?CD",[{parts,
                                                                                                                                                                      2}]))),
    <<"::">> = iolist_to_binary(join(re:split("CD","(A|B)*?CD",[]))),
    <<"">> = iolist_to_binary(join(re:split("CD","(A|B)*CD",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("CD","(A|B)*CD",[{parts,
                                                                                                                                                                    2}]))),
    <<"::">> = iolist_to_binary(join(re:split("CD","(A|B)*CD",[]))),
    <<":AB:AB">> = iolist_to_binary(join(re:split("ABABAB","(AB)*?\\1",[trim]))),
    <<":AB:AB">> = iolist_to_binary(join(re:split("ABABAB","(AB)*?\\1",[{parts,
                                                                                                                                                                               2}]))),
    <<":AB:AB">> = iolist_to_binary(join(re:split("ABABAB","(AB)*?\\1",[]))),
    <<":AB">> = iolist_to_binary(join(re:split("ABABAB","(AB)*\\1",[trim]))),
    <<":AB:">> = iolist_to_binary(join(re:split("ABABAB","(AB)*\\1",[{parts,
                                                                                                                                                                             2}]))),
    <<":AB:">> = iolist_to_binary(join(re:split("ABABAB","(AB)*\\1",[]))),
    <<"">> = iolist_to_binary(join(re:split("foo","(?<!bar)foo",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("foo","(?<!bar)foo",[{parts,
                                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("foo","(?<!bar)foo",[]))),
    <<"cat:d">> = iolist_to_binary(join(re:split("catfood","(?<!bar)foo",[trim]))),
    <<"cat:d">> = iolist_to_binary(join(re:split("catfood","(?<!bar)foo",[{parts,
                                                                                                                                                                                    2}]))),
    <<"cat:d">> = iolist_to_binary(join(re:split("catfood","(?<!bar)foo",[]))),
    <<"ar:tle">> = iolist_to_binary(join(re:split("arfootle","(?<!bar)foo",[trim]))),
    <<"ar:tle">> = iolist_to_binary(join(re:split("arfootle","(?<!bar)foo",[{parts,
                                                                                                                                                                                      2}]))),
    <<"ar:tle">> = iolist_to_binary(join(re:split("arfootle","(?<!bar)foo",[]))),
    <<"r:sh">> = iolist_to_binary(join(re:split("rfoosh","(?<!bar)foo",[trim]))),
    <<"r:sh">> = iolist_to_binary(join(re:split("rfoosh","(?<!bar)foo",[{parts,
                                                                                                                                                                                  2}]))),
    <<"r:sh">> = iolist_to_binary(join(re:split("rfoosh","(?<!bar)foo",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<!bar)foo",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<!bar)foo",[{parts,
                                                                                                                                                                                            2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<!bar)foo",[]))),
    <<"barfoo">> = iolist_to_binary(join(re:split("barfoo","(?<!bar)foo",[trim]))),
    <<"barfoo">> = iolist_to_binary(join(re:split("barfoo","(?<!bar)foo",[{parts,
                                                                                                                                                                                  2}]))),
    <<"barfoo">> = iolist_to_binary(join(re:split("barfoo","(?<!bar)foo",[]))),
    <<"towbarfoo">> = iolist_to_binary(join(re:split("towbarfoo","(?<!bar)foo",[trim]))),
    <<"towbarfoo">> = iolist_to_binary(join(re:split("towbarfoo","(?<!bar)foo",[{parts,
                                                                                                                                                                                        2}]))),
    <<"towbarfoo">> = iolist_to_binary(join(re:split("towbarfoo","(?<!bar)foo",[]))),
    <<":d">> = iolist_to_binary(join(re:split("catfood","\\w{3}(?<!bar)foo",[trim]))),
    <<":d">> = iolist_to_binary(join(re:split("catfood","\\w{3}(?<!bar)foo",[{parts,
                                                                                                                                                                                                 2}]))),
    <<":d">> = iolist_to_binary(join(re:split("catfood","\\w{3}(?<!bar)foo",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\w{3}(?<!bar)foo",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\w{3}(?<!bar)foo",[{parts,
                                                                                                                                                                                                         2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\w{3}(?<!bar)foo",[]))),
    <<"foo">> = iolist_to_binary(join(re:split("foo","\\w{3}(?<!bar)foo",[trim]))),
    <<"foo">> = iolist_to_binary(join(re:split("foo","\\w{3}(?<!bar)foo",[{parts,
                                                                                                                                                                                         2}]))),
    <<"foo">> = iolist_to_binary(join(re:split("foo","\\w{3}(?<!bar)foo",[]))),
    <<"barfoo">> = iolist_to_binary(join(re:split("barfoo","\\w{3}(?<!bar)foo",[trim]))),
    <<"barfoo">> = iolist_to_binary(join(re:split("barfoo","\\w{3}(?<!bar)foo",[{parts,
                                                                                                                                                                                               2}]))),
    <<"barfoo">> = iolist_to_binary(join(re:split("barfoo","\\w{3}(?<!bar)foo",[]))),
    <<"towbarfoo">> = iolist_to_binary(join(re:split("towbarfoo","\\w{3}(?<!bar)foo",[trim]))),
    <<"towbarfoo">> = iolist_to_binary(join(re:split("towbarfoo","\\w{3}(?<!bar)foo",[{parts,
                                                                                                                                                                                                     2}]))),
    <<"towbarfoo">> = iolist_to_binary(join(re:split("towbarfoo","\\w{3}(?<!bar)foo",[]))),
    <<"fooa:foo">> = iolist_to_binary(join(re:split("fooabar","(?<=(foo)a)bar",[trim]))),
    <<"fooa:foo:">> = iolist_to_binary(join(re:split("fooabar","(?<=(foo)a)bar",[{parts,
                                                                                                                                                                                          2}]))),
    <<"fooa:foo:">> = iolist_to_binary(join(re:split("fooabar","(?<=(foo)a)bar",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=(foo)a)bar",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=(foo)a)bar",[{parts,
                                                                                                                                                                                                  2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=(foo)a)bar",[]))),
    <<"bar">> = iolist_to_binary(join(re:split("bar","(?<=(foo)a)bar",[trim]))),
    <<"bar">> = iolist_to_binary(join(re:split("bar","(?<=(foo)a)bar",[{parts,
                                                                                                                                                                                  2}]))),
    <<"bar">> = iolist_to_binary(join(re:split("bar","(?<=(foo)a)bar",[]))),
    <<"foobbar">> = iolist_to_binary(join(re:split("foobbar","(?<=(foo)a)bar",[trim]))),
    <<"foobbar">> = iolist_to_binary(join(re:split("foobbar","(?<=(foo)a)bar",[{parts,
                                                                                                                                                                                          2}]))),
    <<"foobbar">> = iolist_to_binary(join(re:split("foobbar","(?<=(foo)a)bar",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc","\\Aabc\\z",[multiline,
                                                                                                                                                                        trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","\\Aabc\\z",[multiline,
                                                                                                                                                                          {parts,
                                                                                                                                                                           2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","\\Aabc\\z",[multiline]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\Aabc\\z",[multiline,
                                                                                                                                                                                        trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\Aabc\\z",[multiline,
                                                                                                                                                                                          {parts,
                                                                                                                                                                                           2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\Aabc\\z",[multiline]))),
    <<"">> = iolist_to_binary(join(re:split("abc","\\Aabc\\z",[multiline,
                                                                                                                                                                        trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","\\Aabc\\z",[multiline,
                                                                                                                                                                          {parts,
                                                                                                                                                                           2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","\\Aabc\\z",[multiline]))),
    <<"qqq
abc">> = iolist_to_binary(join(re:split("qqq
abc","\\Aabc\\z",[multiline,trim]))),
    <<"qqq
abc">> = iolist_to_binary(join(re:split("qqq
abc","\\Aabc\\z",[multiline,{parts,2}]))),
    <<"qqq
abc">> = iolist_to_binary(join(re:split("qqq
abc","\\Aabc\\z",[multiline]))),
    <<"abc
zzz">> = iolist_to_binary(join(re:split("abc
zzz","\\Aabc\\z",[multiline,trim]))),
    <<"abc
zzz">> = iolist_to_binary(join(re:split("abc
zzz","\\Aabc\\z",[multiline,{parts,2}]))),
    <<"abc
zzz">> = iolist_to_binary(join(re:split("abc
zzz","\\Aabc\\z",[multiline]))),
    <<"qqq
abc
zzz">> = iolist_to_binary(join(re:split("qqq
abc
zzz","\\Aabc\\z",[multiline,trim]))),
    <<"qqq
abc
zzz">> = iolist_to_binary(join(re:split("qqq
abc
zzz","\\Aabc\\z",[multiline,{parts,2}]))),
    <<"qqq
abc
zzz">> = iolist_to_binary(join(re:split("qqq
abc
zzz","\\Aabc\\z",[multiline]))),
    <<"1:.23">> = iolist_to_binary(join(re:split("1.230003938","(?>(\\.\\d\\d[1-9]?))\\d+",[trim]))),
    <<"1:.23:">> = iolist_to_binary(join(re:split("1.230003938","(?>(\\.\\d\\d[1-9]?))\\d+",[{parts,
                                                                                                                                                                                                                            2}]))),
    <<"1:.23:">> = iolist_to_binary(join(re:split("1.230003938","(?>(\\.\\d\\d[1-9]?))\\d+",[]))),
    <<"1:.875">> = iolist_to_binary(join(re:split("1.875000282","(?>(\\.\\d\\d[1-9]?))\\d+",[trim]))),
    <<"1:.875:">> = iolist_to_binary(join(re:split("1.875000282","(?>(\\.\\d\\d[1-9]?))\\d+",[{parts,
                                                                                                                                                                                                                            2}]))),
    <<"1:.875:">> = iolist_to_binary(join(re:split("1.875000282","(?>(\\.\\d\\d[1-9]?))\\d+",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?>(\\.\\d\\d[1-9]?))\\d+",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?>(\\.\\d\\d[1-9]?))\\d+",[{parts,
                                                                                                                                                                                                                            2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?>(\\.\\d\\d[1-9]?))\\d+",[]))),
    <<"1.235">> = iolist_to_binary(join(re:split("1.235","(?>(\\.\\d\\d[1-9]?))\\d+",[trim]))),
    <<"1.235">> = iolist_to_binary(join(re:split("1.235","(?>(\\.\\d\\d[1-9]?))\\d+",[{parts,
                                                                                                                                                                                                                2}]))),
    <<"1.235">> = iolist_to_binary(join(re:split("1.235","(?>(\\.\\d\\d[1-9]?))\\d+",[]))),
    <<":party">> = iolist_to_binary(join(re:split("now is the time for all good men to come to the aid of the party","^((?>\\w+)|(?>\\s+))*$",[trim]))),
    <<":party:">> = iolist_to_binary(join(re:split("now is the time for all good men to come to the aid of the party","^((?>\\w+)|(?>\\s+))*$",[{parts,
                                                                                                                                                                                                                                                                                                                               2}]))),
    <<":party:">> = iolist_to_binary(join(re:split("now is the time for all good men to come to the aid of the party","^((?>\\w+)|(?>\\s+))*$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^((?>\\w+)|(?>\\s+))*$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^((?>\\w+)|(?>\\s+))*$",[{parts,
                                                                                                                                                                                                                     2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^((?>\\w+)|(?>\\s+))*$",[]))),
    <<"this is not a line with only words and spaces!">> = iolist_to_binary(join(re:split("this is not a line with only words and spaces!","^((?>\\w+)|(?>\\s+))*$",[trim]))),
    <<"this is not a line with only words and spaces!">> = iolist_to_binary(join(re:split("this is not a line with only words and spaces!","^((?>\\w+)|(?>\\s+))*$",[{parts,
                                                                                                                                                                                                                                                                                           2}]))),
    <<"this is not a line with only words and spaces!">> = iolist_to_binary(join(re:split("this is not a line with only words and spaces!","^((?>\\w+)|(?>\\s+))*$",[]))),
    <<":12345:a">> = iolist_to_binary(join(re:split("12345a","(\\d+)(\\w)",[trim]))),
    <<":12345:a:">> = iolist_to_binary(join(re:split("12345a","(\\d+)(\\w)",[{parts,
                                                                                                                                                                                    2}]))),
    <<":12345:a:">> = iolist_to_binary(join(re:split("12345a","(\\d+)(\\w)",[]))),
    <<":1234:5:+">> = iolist_to_binary(join(re:split("12345+","(\\d+)(\\w)",[trim]))),
    <<":1234:5:+">> = iolist_to_binary(join(re:split("12345+","(\\d+)(\\w)",[{parts,
                                                                                                                                                                                    2}]))),
    <<":1234:5:+">> = iolist_to_binary(join(re:split("12345+","(\\d+)(\\w)",[]))),
    <<":12345:a">> = iolist_to_binary(join(re:split("12345a","((?>\\d+))(\\w)",[trim]))),
    <<":12345:a:">> = iolist_to_binary(join(re:split("12345a","((?>\\d+))(\\w)",[{parts,
                                                                                                                                                                                            2}]))),
    <<":12345:a:">> = iolist_to_binary(join(re:split("12345a","((?>\\d+))(\\w)",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","((?>\\d+))(\\w)",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","((?>\\d+))(\\w)",[{parts,
                                                                                                                                                                                                      2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","((?>\\d+))(\\w)",[]))),
    <<"12345+">> = iolist_to_binary(join(re:split("12345+","((?>\\d+))(\\w)",[trim]))),
    <<"12345+">> = iolist_to_binary(join(re:split("12345+","((?>\\d+))(\\w)",[{parts,
                                                                                                                                                                                            2}]))),
    <<"12345+">> = iolist_to_binary(join(re:split("12345+","((?>\\d+))(\\w)",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaab","(?>a+)b",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaab","(?>a+)b",[{parts,
                                                                                                                                                                      2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaab","(?>a+)b",[]))),
    ok.
run12() ->
    <<":aaab">> = iolist_to_binary(join(re:split("aaab","((?>a+)b)",[trim]))),
    <<":aaab:">> = iolist_to_binary(join(re:split("aaab","((?>a+)b)",[{parts,
                                                                                                                                                                          2}]))),
    <<":aaab:">> = iolist_to_binary(join(re:split("aaab","((?>a+)b)",[]))),
    <<":aaa">> = iolist_to_binary(join(re:split("aaab","(?>(a+))b",[trim]))),
    <<":aaa:">> = iolist_to_binary(join(re:split("aaab","(?>(a+))b",[{parts,
                                                                                                                                                                          2}]))),
    <<":aaa:">> = iolist_to_binary(join(re:split("aaab","(?>(a+))b",[]))),
    <<"aaa:ccc">> = iolist_to_binary(join(re:split("aaabbbccc","(?>b)+",[trim]))),
    <<"aaa:ccc">> = iolist_to_binary(join(re:split("aaabbbccc","(?>b)+",[{parts,
                                                                                                                                                                              2}]))),
    <<"aaa:ccc">> = iolist_to_binary(join(re:split("aaabbbccc","(?>b)+",[]))),
    <<"::::d">> = iolist_to_binary(join(re:split("aaabbbbccccd","(?>a+|b+|c+)*c",[trim]))),
    <<":cccd">> = iolist_to_binary(join(re:split("aaabbbbccccd","(?>a+|b+|c+)*c",[{parts,
                                                                                                                                                                                                    2}]))),
    <<"::::d">> = iolist_to_binary(join(re:split("aaabbbbccccd","(?>a+|b+|c+)*c",[]))),
    <<"((:x">> = iolist_to_binary(join(re:split("((abc(ade)ufh()()x","((?>[^()]+)|\\([^()]*\\))+",[trim]))),
    <<"((:x:">> = iolist_to_binary(join(re:split("((abc(ade)ufh()()x","((?>[^()]+)|\\([^()]*\\))+",[{parts,
                                                                                                                                                                                                                                          2}]))),
    <<"((:x:">> = iolist_to_binary(join(re:split("((abc(ade)ufh()()x","((?>[^()]+)|\\([^()]*\\))+",[]))),
    <<":abc">> = iolist_to_binary(join(re:split("(abc)","\\(((?>[^()]+)|\\([^()]+\\))+\\)",[trim]))),
    <<":abc:">> = iolist_to_binary(join(re:split("(abc)","\\(((?>[^()]+)|\\([^()]+\\))+\\)",[{parts,
                                                                                                                                                                                                                              2}]))),
    <<":abc:">> = iolist_to_binary(join(re:split("(abc)","\\(((?>[^()]+)|\\([^()]+\\))+\\)",[]))),
    <<":xyz">> = iolist_to_binary(join(re:split("(abc(def)xyz)","\\(((?>[^()]+)|\\([^()]+\\))+\\)",[trim]))),
    <<":xyz:">> = iolist_to_binary(join(re:split("(abc(def)xyz)","\\(((?>[^()]+)|\\([^()]+\\))+\\)",[{parts,
                                                                                                                                                                                                                                              2}]))),
    <<":xyz:">> = iolist_to_binary(join(re:split("(abc(def)xyz)","\\(((?>[^()]+)|\\([^()]+\\))+\\)",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\(((?>[^()]+)|\\([^()]+\\))+\\)",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\(((?>[^()]+)|\\([^()]+\\))+\\)",[{parts,
                                                                                                                                                                                                                                          2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\(((?>[^()]+)|\\([^()]+\\))+\\)",[]))),
    <<"((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","\\(((?>[^()]+)|\\([^()]+\\))+\\)",[trim]))),
    <<"((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","\\(((?>[^()]+)|\\([^()]+\\))+\\)",[{parts,
                                                                                                                                                                                                                                                                                                                    2}]))),
    <<"((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","\\(((?>[^()]+)|\\([^()]+\\))+\\)",[]))),
    <<"">> = iolist_to_binary(join(re:split("ab","a(?-i)b",[caseless,
                                                                                                                                                                trim]))),
    <<":">> = iolist_to_binary(join(re:split("ab","a(?-i)b",[caseless,
                                                                                                                                                                  {parts,
                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("ab","a(?-i)b",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("Ab","a(?-i)b",[caseless,
                                                                                                                                                                trim]))),
    <<":">> = iolist_to_binary(join(re:split("Ab","a(?-i)b",[caseless,
                                                                                                                                                                  {parts,
                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("Ab","a(?-i)b",[caseless]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a(?-i)b",[caseless,
                                                                                                                                                                                  trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a(?-i)b",[caseless,
                                                                                                                                                                                    {parts,
                                                                                                                                                                                     2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a(?-i)b",[caseless]))),
    <<"aB">> = iolist_to_binary(join(re:split("aB","a(?-i)b",[caseless,
                                                                                                                                                                trim]))),
    <<"aB">> = iolist_to_binary(join(re:split("aB","a(?-i)b",[caseless,
                                                                                                                                                                  {parts,
                                                                                                                                                                   2}]))),
    <<"aB">> = iolist_to_binary(join(re:split("aB","a(?-i)b",[caseless]))),
    <<"AB">> = iolist_to_binary(join(re:split("AB","a(?-i)b",[caseless,
                                                                                                                                                                trim]))),
    <<"AB">> = iolist_to_binary(join(re:split("AB","a(?-i)b",[caseless,
                                                                                                                                                                  {parts,
                                                                                                                                                                   2}]))),
    <<"AB">> = iolist_to_binary(join(re:split("AB","a(?-i)b",[caseless]))),
    <<":a bc">> = iolist_to_binary(join(re:split("a bcd e","(a (?x)b c)d e",[trim]))),
    <<":a bc:">> = iolist_to_binary(join(re:split("a bcd e","(a (?x)b c)d e",[{parts,
                                                                                                                                                                                          2}]))),
    <<":a bc:">> = iolist_to_binary(join(re:split("a bcd e","(a (?x)b c)d e",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(a (?x)b c)d e",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(a (?x)b c)d e",[{parts,
                                                                                                                                                                                                  2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(a (?x)b c)d e",[]))),
    <<"a b cd e">> = iolist_to_binary(join(re:split("a b cd e","(a (?x)b c)d e",[trim]))),
    <<"a b cd e">> = iolist_to_binary(join(re:split("a b cd e","(a (?x)b c)d e",[{parts,
                                                                                                                                                                                            2}]))),
    <<"a b cd e">> = iolist_to_binary(join(re:split("a b cd e","(a (?x)b c)d e",[]))),
    <<"abcd e">> = iolist_to_binary(join(re:split("abcd e","(a (?x)b c)d e",[trim]))),
    <<"abcd e">> = iolist_to_binary(join(re:split("abcd e","(a (?x)b c)d e",[{parts,
                                                                                                                                                                                        2}]))),
    <<"abcd e">> = iolist_to_binary(join(re:split("abcd e","(a (?x)b c)d e",[]))),
    <<"a bcde">> = iolist_to_binary(join(re:split("a bcde","(a (?x)b c)d e",[trim]))),
    <<"a bcde">> = iolist_to_binary(join(re:split("a bcde","(a (?x)b c)d e",[{parts,
                                                                                                                                                                                        2}]))),
    <<"a bcde">> = iolist_to_binary(join(re:split("a bcde","(a (?x)b c)d e",[]))),
    <<":a bcde f">> = iolist_to_binary(join(re:split("a bcde f","(a b(?x)c d (?-x)e f)",[trim]))),
    <<":a bcde f:">> = iolist_to_binary(join(re:split("a bcde f","(a b(?x)c d (?-x)e f)",[{parts,
                                                                                                                                                                                                          2}]))),
    <<":a bcde f:">> = iolist_to_binary(join(re:split("a bcde f","(a b(?x)c d (?-x)e f)",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(a b(?x)c d (?-x)e f)",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(a b(?x)c d (?-x)e f)",[{parts,
                                                                                                                                                                                                                2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(a b(?x)c d (?-x)e f)",[]))),
    <<"abcdef">> = iolist_to_binary(join(re:split("abcdef","(a b(?x)c d (?-x)e f)",[trim]))),
    <<"abcdef">> = iolist_to_binary(join(re:split("abcdef","(a b(?x)c d (?-x)e f)",[{parts,
                                                                                                                                                                                                      2}]))),
    <<"abcdef">> = iolist_to_binary(join(re:split("abcdef","(a b(?x)c d (?-x)e f)",[]))),
    <<":ab">> = iolist_to_binary(join(re:split("abc","(a(?i)b)c",[trim]))),
    <<":ab:">> = iolist_to_binary(join(re:split("abc","(a(?i)b)c",[{parts,
                                                                                                                                                                        2}]))),
    <<":ab:">> = iolist_to_binary(join(re:split("abc","(a(?i)b)c",[]))),
    <<":aB">> = iolist_to_binary(join(re:split("aBc","(a(?i)b)c",[trim]))),
    <<":aB:">> = iolist_to_binary(join(re:split("aBc","(a(?i)b)c",[{parts,
                                                                                                                                                                        2}]))),
    <<":aB:">> = iolist_to_binary(join(re:split("aBc","(a(?i)b)c",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(a(?i)b)c",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(a(?i)b)c",[{parts,
                                                                                                                                                                                        2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(a(?i)b)c",[]))),
    <<"abC">> = iolist_to_binary(join(re:split("abC","(a(?i)b)c",[trim]))),
    <<"abC">> = iolist_to_binary(join(re:split("abC","(a(?i)b)c",[{parts,
                                                                                                                                                                        2}]))),
    <<"abC">> = iolist_to_binary(join(re:split("abC","(a(?i)b)c",[]))),
    <<"aBC">> = iolist_to_binary(join(re:split("aBC","(a(?i)b)c",[trim]))),
    <<"aBC">> = iolist_to_binary(join(re:split("aBC","(a(?i)b)c",[{parts,
                                                                                                                                                                        2}]))),
    <<"aBC">> = iolist_to_binary(join(re:split("aBC","(a(?i)b)c",[]))),
    <<"Abc">> = iolist_to_binary(join(re:split("Abc","(a(?i)b)c",[trim]))),
    <<"Abc">> = iolist_to_binary(join(re:split("Abc","(a(?i)b)c",[{parts,
                                                                                                                                                                        2}]))),
    <<"Abc">> = iolist_to_binary(join(re:split("Abc","(a(?i)b)c",[]))),
    <<"ABc">> = iolist_to_binary(join(re:split("ABc","(a(?i)b)c",[trim]))),
    <<"ABc">> = iolist_to_binary(join(re:split("ABc","(a(?i)b)c",[{parts,
                                                                                                                                                                        2}]))),
    <<"ABc">> = iolist_to_binary(join(re:split("ABc","(a(?i)b)c",[]))),
    <<"ABC">> = iolist_to_binary(join(re:split("ABC","(a(?i)b)c",[trim]))),
    <<"ABC">> = iolist_to_binary(join(re:split("ABC","(a(?i)b)c",[{parts,
                                                                                                                                                                        2}]))),
    <<"ABC">> = iolist_to_binary(join(re:split("ABC","(a(?i)b)c",[]))),
    <<"AbC">> = iolist_to_binary(join(re:split("AbC","(a(?i)b)c",[trim]))),
    <<"AbC">> = iolist_to_binary(join(re:split("AbC","(a(?i)b)c",[{parts,
                                                                                                                                                                        2}]))),
    <<"AbC">> = iolist_to_binary(join(re:split("AbC","(a(?i)b)c",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc","a(?i:b)c",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","a(?i:b)c",[{parts,
                                                                                                                                                                      2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","a(?i:b)c",[]))),
    <<"">> = iolist_to_binary(join(re:split("aBc","a(?i:b)c",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aBc","a(?i:b)c",[{parts,
                                                                                                                                                                      2}]))),
    <<":">> = iolist_to_binary(join(re:split("aBc","a(?i:b)c",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a(?i:b)c",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a(?i:b)c",[{parts,
                                                                                                                                                                                      2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a(?i:b)c",[]))),
    <<"ABC">> = iolist_to_binary(join(re:split("ABC","a(?i:b)c",[trim]))),
    <<"ABC">> = iolist_to_binary(join(re:split("ABC","a(?i:b)c",[{parts,
                                                                                                                                                                      2}]))),
    <<"ABC">> = iolist_to_binary(join(re:split("ABC","a(?i:b)c",[]))),
    <<"abC">> = iolist_to_binary(join(re:split("abC","a(?i:b)c",[trim]))),
    <<"abC">> = iolist_to_binary(join(re:split("abC","a(?i:b)c",[{parts,
                                                                                                                                                                      2}]))),
    <<"abC">> = iolist_to_binary(join(re:split("abC","a(?i:b)c",[]))),
    <<"aBC">> = iolist_to_binary(join(re:split("aBC","a(?i:b)c",[trim]))),
    <<"aBC">> = iolist_to_binary(join(re:split("aBC","a(?i:b)c",[{parts,
                                                                                                                                                                      2}]))),
    <<"aBC">> = iolist_to_binary(join(re:split("aBC","a(?i:b)c",[]))),
    <<"">> = iolist_to_binary(join(re:split("aBc","a(?i:b)*c",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aBc","a(?i:b)*c",[{parts,
                                                                                                                                                                        2}]))),
    <<":">> = iolist_to_binary(join(re:split("aBc","a(?i:b)*c",[]))),
    <<"">> = iolist_to_binary(join(re:split("aBBc","a(?i:b)*c",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aBBc","a(?i:b)*c",[{parts,
                                                                                                                                                                          2}]))),
    <<":">> = iolist_to_binary(join(re:split("aBBc","a(?i:b)*c",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a(?i:b)*c",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a(?i:b)*c",[{parts,
                                                                                                                                                                                        2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a(?i:b)*c",[]))),
    <<"aBC">> = iolist_to_binary(join(re:split("aBC","a(?i:b)*c",[trim]))),
    <<"aBC">> = iolist_to_binary(join(re:split("aBC","a(?i:b)*c",[{parts,
                                                                                                                                                                        2}]))),
    <<"aBC">> = iolist_to_binary(join(re:split("aBC","a(?i:b)*c",[]))),
    <<"aBBC">> = iolist_to_binary(join(re:split("aBBC","a(?i:b)*c",[trim]))),
    <<"aBBC">> = iolist_to_binary(join(re:split("aBBC","a(?i:b)*c",[{parts,
                                                                                                                                                                          2}]))),
    <<"aBBC">> = iolist_to_binary(join(re:split("aBBC","a(?i:b)*c",[]))),
    <<"">> = iolist_to_binary(join(re:split("abcd","a(?=b(?i)c)\\w\\wd",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abcd","a(?=b(?i)c)\\w\\wd",[{parts,
                                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("abcd","a(?=b(?i)c)\\w\\wd",[]))),
    <<"">> = iolist_to_binary(join(re:split("abCd","a(?=b(?i)c)\\w\\wd",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abCd","a(?=b(?i)c)\\w\\wd",[{parts,
                                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("abCd","a(?=b(?i)c)\\w\\wd",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a(?=b(?i)c)\\w\\wd",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a(?=b(?i)c)\\w\\wd",[{parts,
                                                                                                                                                                                                            2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a(?=b(?i)c)\\w\\wd",[]))),
    <<"aBCd">> = iolist_to_binary(join(re:split("aBCd","a(?=b(?i)c)\\w\\wd",[trim]))),
    <<"aBCd">> = iolist_to_binary(join(re:split("aBCd","a(?=b(?i)c)\\w\\wd",[{parts,
                                                                                                                                                                                              2}]))),
    <<"aBCd">> = iolist_to_binary(join(re:split("aBCd","a(?=b(?i)c)\\w\\wd",[]))),
    <<"abcD">> = iolist_to_binary(join(re:split("abcD","a(?=b(?i)c)\\w\\wd",[trim]))),
    <<"abcD">> = iolist_to_binary(join(re:split("abcD","a(?=b(?i)c)\\w\\wd",[{parts,
                                                                                                                                                                                              2}]))),
    <<"abcD">> = iolist_to_binary(join(re:split("abcD","a(?=b(?i)c)\\w\\wd",[]))),
    <<"">> = iolist_to_binary(join(re:split("more than million","(?s-i:more.*than).*million",[caseless,
                                                                                                                                                                                                                                    trim]))),
    <<":">> = iolist_to_binary(join(re:split("more than million","(?s-i:more.*than).*million",[caseless,
                                                                                                                                                                                                                                      {parts,
                                                                                                                                                                                                                                       2}]))),
    <<":">> = iolist_to_binary(join(re:split("more than million","(?s-i:more.*than).*million",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("more than MILLION","(?s-i:more.*than).*million",[caseless,
                                                                                                                                                                                                                                    trim]))),
    <<":">> = iolist_to_binary(join(re:split("more than MILLION","(?s-i:more.*than).*million",[caseless,
                                                                                                                                                                                                                                      {parts,
                                                                                                                                                                                                                                       2}]))),
    <<":">> = iolist_to_binary(join(re:split("more than MILLION","(?s-i:more.*than).*million",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("more 
 than Million","(?s-i:more.*than).*million",[caseless,trim]))),
    <<":">> = iolist_to_binary(join(re:split("more 
 than Million","(?s-i:more.*than).*million",[caseless,{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("more 
 than Million","(?s-i:more.*than).*million",[caseless]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?s-i:more.*than).*million",[caseless,
                                                                                                                                                                                                                        trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?s-i:more.*than).*million",[caseless,
                                                                                                                                                                                                                          {parts,
                                                                                                                                                                                                                           2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?s-i:more.*than).*million",[caseless]))),
    <<"MORE THAN MILLION">> = iolist_to_binary(join(re:split("MORE THAN MILLION","(?s-i:more.*than).*million",[caseless,
                                                                                                                                                                                                                                    trim]))),
    <<"MORE THAN MILLION">> = iolist_to_binary(join(re:split("MORE THAN MILLION","(?s-i:more.*than).*million",[caseless,
                                                                                                                                                                                                                                      {parts,
                                                                                                                                                                                                                                       2}]))),
    <<"MORE THAN MILLION">> = iolist_to_binary(join(re:split("MORE THAN MILLION","(?s-i:more.*than).*million",[caseless]))),
    <<"more 
 than 
 million">> = iolist_to_binary(join(re:split("more 
 than 
 million","(?s-i:more.*than).*million",[caseless,trim]))),
    <<"more 
 than 
 million">> = iolist_to_binary(join(re:split("more 
 than 
 million","(?s-i:more.*than).*million",[caseless,{parts,2}]))),
    <<"more 
 than 
 million">> = iolist_to_binary(join(re:split("more 
 than 
 million","(?s-i:more.*than).*million",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("more than million","(?:(?s-i)more.*than).*million",[caseless,
                                                                                                                                                                                                                                          trim]))),
    <<":">> = iolist_to_binary(join(re:split("more than million","(?:(?s-i)more.*than).*million",[caseless,
                                                                                                                                                                                                                                            {parts,
                                                                                                                                                                                                                                             2}]))),
    <<":">> = iolist_to_binary(join(re:split("more than million","(?:(?s-i)more.*than).*million",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("more than MILLION","(?:(?s-i)more.*than).*million",[caseless,
                                                                                                                                                                                                                                          trim]))),
    <<":">> = iolist_to_binary(join(re:split("more than MILLION","(?:(?s-i)more.*than).*million",[caseless,
                                                                                                                                                                                                                                            {parts,
                                                                                                                                                                                                                                             2}]))),
    <<":">> = iolist_to_binary(join(re:split("more than MILLION","(?:(?s-i)more.*than).*million",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("more 
 than Million","(?:(?s-i)more.*than).*million",[caseless,trim]))),
    <<":">> = iolist_to_binary(join(re:split("more 
 than Million","(?:(?s-i)more.*than).*million",[caseless,{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("more 
 than Million","(?:(?s-i)more.*than).*million",[caseless]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?:(?s-i)more.*than).*million",[caseless,
                                                                                                                                                                                                                              trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?:(?s-i)more.*than).*million",[caseless,
                                                                                                                                                                                                                                {parts,
                                                                                                                                                                                                                                 2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?:(?s-i)more.*than).*million",[caseless]))),
    <<"MORE THAN MILLION">> = iolist_to_binary(join(re:split("MORE THAN MILLION","(?:(?s-i)more.*than).*million",[caseless,
                                                                                                                                                                                                                                          trim]))),
    <<"MORE THAN MILLION">> = iolist_to_binary(join(re:split("MORE THAN MILLION","(?:(?s-i)more.*than).*million",[caseless,
                                                                                                                                                                                                                                            {parts,
                                                                                                                                                                                                                                             2}]))),
    <<"MORE THAN MILLION">> = iolist_to_binary(join(re:split("MORE THAN MILLION","(?:(?s-i)more.*than).*million",[caseless]))),
    <<"more 
 than 
 million">> = iolist_to_binary(join(re:split("more 
 than 
 million","(?:(?s-i)more.*than).*million",[caseless,trim]))),
    <<"more 
 than 
 million">> = iolist_to_binary(join(re:split("more 
 than 
 million","(?:(?s-i)more.*than).*million",[caseless,{parts,2}]))),
    <<"more 
 than 
 million">> = iolist_to_binary(join(re:split("more 
 than 
 million","(?:(?s-i)more.*than).*million",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("abc","(?>a(?i)b+)+c",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","(?>a(?i)b+)+c",[{parts,
                                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","(?>a(?i)b+)+c",[]))),
    <<"">> = iolist_to_binary(join(re:split("aBbc","(?>a(?i)b+)+c",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aBbc","(?>a(?i)b+)+c",[{parts,
                                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("aBbc","(?>a(?i)b+)+c",[]))),
    <<"">> = iolist_to_binary(join(re:split("aBBc","(?>a(?i)b+)+c",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aBBc","(?>a(?i)b+)+c",[{parts,
                                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("aBBc","(?>a(?i)b+)+c",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?>a(?i)b+)+c",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?>a(?i)b+)+c",[{parts,
                                                                                                                                                                                                2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?>a(?i)b+)+c",[]))),
    <<"Abc">> = iolist_to_binary(join(re:split("Abc","(?>a(?i)b+)+c",[trim]))),
    <<"Abc">> = iolist_to_binary(join(re:split("Abc","(?>a(?i)b+)+c",[{parts,
                                                                                                                                                                                2}]))),
    <<"Abc">> = iolist_to_binary(join(re:split("Abc","(?>a(?i)b+)+c",[]))),
    <<"abAb">> = iolist_to_binary(join(re:split("abAb","(?>a(?i)b+)+c",[trim]))),
    <<"abAb">> = iolist_to_binary(join(re:split("abAb","(?>a(?i)b+)+c",[{parts,
                                                                                                                                                                                  2}]))),
    <<"abAb">> = iolist_to_binary(join(re:split("abAb","(?>a(?i)b+)+c",[]))),
    <<"abbC">> = iolist_to_binary(join(re:split("abbC","(?>a(?i)b+)+c",[trim]))),
    <<"abbC">> = iolist_to_binary(join(re:split("abbC","(?>a(?i)b+)+c",[{parts,
                                                                                                                                                                                  2}]))),
    <<"abbC">> = iolist_to_binary(join(re:split("abbC","(?>a(?i)b+)+c",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc","(?=a(?i)b)\\w\\wc",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","(?=a(?i)b)\\w\\wc",[{parts,
                                                                                                                                                                                          2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","(?=a(?i)b)\\w\\wc",[]))),
    <<"">> = iolist_to_binary(join(re:split("aBc","(?=a(?i)b)\\w\\wc",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aBc","(?=a(?i)b)\\w\\wc",[{parts,
                                                                                                                                                                                          2}]))),
    <<":">> = iolist_to_binary(join(re:split("aBc","(?=a(?i)b)\\w\\wc",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?=a(?i)b)\\w\\wc",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?=a(?i)b)\\w\\wc",[{parts,
                                                                                                                                                                                                          2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?=a(?i)b)\\w\\wc",[]))),
    <<"Ab">> = iolist_to_binary(join(re:split("Ab","(?=a(?i)b)\\w\\wc",[trim]))),
    <<"Ab">> = iolist_to_binary(join(re:split("Ab","(?=a(?i)b)\\w\\wc",[{parts,
                                                                                                                                                                                        2}]))),
    <<"Ab">> = iolist_to_binary(join(re:split("Ab","(?=a(?i)b)\\w\\wc",[]))),
    <<"abC">> = iolist_to_binary(join(re:split("abC","(?=a(?i)b)\\w\\wc",[trim]))),
    <<"abC">> = iolist_to_binary(join(re:split("abC","(?=a(?i)b)\\w\\wc",[{parts,
                                                                                                                                                                                          2}]))),
    <<"abC">> = iolist_to_binary(join(re:split("abC","(?=a(?i)b)\\w\\wc",[]))),
    <<"aBC">> = iolist_to_binary(join(re:split("aBC","(?=a(?i)b)\\w\\wc",[trim]))),
    <<"aBC">> = iolist_to_binary(join(re:split("aBC","(?=a(?i)b)\\w\\wc",[{parts,
                                                                                                                                                                                          2}]))),
    <<"aBC">> = iolist_to_binary(join(re:split("aBC","(?=a(?i)b)\\w\\wc",[]))),
    <<"ab:xx">> = iolist_to_binary(join(re:split("abxxc","(?<=a(?i)b)(\\w\\w)c",[trim]))),
    <<"ab:xx:">> = iolist_to_binary(join(re:split("abxxc","(?<=a(?i)b)(\\w\\w)c",[{parts,
                                                                                                                                                                                                    2}]))),
    <<"ab:xx:">> = iolist_to_binary(join(re:split("abxxc","(?<=a(?i)b)(\\w\\w)c",[]))),
    <<"aB:xx">> = iolist_to_binary(join(re:split("aBxxc","(?<=a(?i)b)(\\w\\w)c",[trim]))),
    <<"aB:xx:">> = iolist_to_binary(join(re:split("aBxxc","(?<=a(?i)b)(\\w\\w)c",[{parts,
                                                                                                                                                                                                    2}]))),
    <<"aB:xx:">> = iolist_to_binary(join(re:split("aBxxc","(?<=a(?i)b)(\\w\\w)c",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=a(?i)b)(\\w\\w)c",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=a(?i)b)(\\w\\w)c",[{parts,
                                                                                                                                                                                                                2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=a(?i)b)(\\w\\w)c",[]))),
    <<"Abxxc">> = iolist_to_binary(join(re:split("Abxxc","(?<=a(?i)b)(\\w\\w)c",[trim]))),
    <<"Abxxc">> = iolist_to_binary(join(re:split("Abxxc","(?<=a(?i)b)(\\w\\w)c",[{parts,
                                                                                                                                                                                                    2}]))),
    <<"Abxxc">> = iolist_to_binary(join(re:split("Abxxc","(?<=a(?i)b)(\\w\\w)c",[]))),
    <<"ABxxc">> = iolist_to_binary(join(re:split("ABxxc","(?<=a(?i)b)(\\w\\w)c",[trim]))),
    <<"ABxxc">> = iolist_to_binary(join(re:split("ABxxc","(?<=a(?i)b)(\\w\\w)c",[{parts,
                                                                                                                                                                                                    2}]))),
    <<"ABxxc">> = iolist_to_binary(join(re:split("ABxxc","(?<=a(?i)b)(\\w\\w)c",[]))),
    <<"abxxC">> = iolist_to_binary(join(re:split("abxxC","(?<=a(?i)b)(\\w\\w)c",[trim]))),
    <<"abxxC">> = iolist_to_binary(join(re:split("abxxC","(?<=a(?i)b)(\\w\\w)c",[{parts,
                                                                                                                                                                                                    2}]))),
    <<"abxxC">> = iolist_to_binary(join(re:split("abxxC","(?<=a(?i)b)(\\w\\w)c",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aA","(?:(a)|b)(?(1)A|B)",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aA","(?:(a)|b)(?(1)A|B)",[{parts,
                                                                                                                                                                                        2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aA","(?:(a)|b)(?(1)A|B)",[]))),
    <<"">> = iolist_to_binary(join(re:split("bB","(?:(a)|b)(?(1)A|B)",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("bB","(?:(a)|b)(?(1)A|B)",[{parts,
                                                                                                                                                                                        2}]))),
    <<"::">> = iolist_to_binary(join(re:split("bB","(?:(a)|b)(?(1)A|B)",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?:(a)|b)(?(1)A|B)",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?:(a)|b)(?(1)A|B)",[{parts,
                                                                                                                                                                                                          2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?:(a)|b)(?(1)A|B)",[]))),
    <<"aB">> = iolist_to_binary(join(re:split("aB","(?:(a)|b)(?(1)A|B)",[trim]))),
    <<"aB">> = iolist_to_binary(join(re:split("aB","(?:(a)|b)(?(1)A|B)",[{parts,
                                                                                                                                                                                        2}]))),
    <<"aB">> = iolist_to_binary(join(re:split("aB","(?:(a)|b)(?(1)A|B)",[]))),
    <<"bA">> = iolist_to_binary(join(re:split("bA","(?:(a)|b)(?(1)A|B)",[trim]))),
    <<"bA">> = iolist_to_binary(join(re:split("bA","(?:(a)|b)(?(1)A|B)",[{parts,
                                                                                                                                                                                        2}]))),
    <<"bA">> = iolist_to_binary(join(re:split("bA","(?:(a)|b)(?(1)A|B)",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aa","^(a)?(?(1)a|b)+$",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aa","^(a)?(?(1)a|b)+$",[{parts,
                                                                                                                                                                                     2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aa","^(a)?(?(1)a|b)+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("b","^(a)?(?(1)a|b)+$",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("b","^(a)?(?(1)a|b)+$",[{parts,
                                                                                                                                                                                   2}]))),
    <<"::">> = iolist_to_binary(join(re:split("b","^(a)?(?(1)a|b)+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("bb","^(a)?(?(1)a|b)+$",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("bb","^(a)?(?(1)a|b)+$",[{parts,
                                                                                                                                                                                     2}]))),
    <<"::">> = iolist_to_binary(join(re:split("bb","^(a)?(?(1)a|b)+$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a)?(?(1)a|b)+$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a)?(?(1)a|b)+$",[{parts,
                                                                                                                                                                                                       2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a)?(?(1)a|b)+$",[]))),
    <<"ab">> = iolist_to_binary(join(re:split("ab","^(a)?(?(1)a|b)+$",[trim]))),
    <<"ab">> = iolist_to_binary(join(re:split("ab","^(a)?(?(1)a|b)+$",[{parts,
                                                                                                                                                                                     2}]))),
    <<"ab">> = iolist_to_binary(join(re:split("ab","^(a)?(?(1)a|b)+$",[]))),
    ok.
run13() ->
    <<"">> = iolist_to_binary(join(re:split("abc:","^(?(?=abc)\\w{3}:|\\d\\d)$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc:","^(?(?=abc)\\w{3}:|\\d\\d)$",[{parts,
                                                                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc:","^(?(?=abc)\\w{3}:|\\d\\d)$",[]))),
    <<"">> = iolist_to_binary(join(re:split("12","^(?(?=abc)\\w{3}:|\\d\\d)$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("12","^(?(?=abc)\\w{3}:|\\d\\d)$",[{parts,
                                                                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("12","^(?(?=abc)\\w{3}:|\\d\\d)$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(?(?=abc)\\w{3}:|\\d\\d)$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(?(?=abc)\\w{3}:|\\d\\d)$",[{parts,
                                                                                                                                                                                                                              2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(?(?=abc)\\w{3}:|\\d\\d)$",[]))),
    <<"123">> = iolist_to_binary(join(re:split("123","^(?(?=abc)\\w{3}:|\\d\\d)$",[trim]))),
    <<"123">> = iolist_to_binary(join(re:split("123","^(?(?=abc)\\w{3}:|\\d\\d)$",[{parts,
                                                                                                                                                                                                              2}]))),
    <<"123">> = iolist_to_binary(join(re:split("123","^(?(?=abc)\\w{3}:|\\d\\d)$",[]))),
    <<"xyz">> = iolist_to_binary(join(re:split("xyz","^(?(?=abc)\\w{3}:|\\d\\d)$",[trim]))),
    <<"xyz">> = iolist_to_binary(join(re:split("xyz","^(?(?=abc)\\w{3}:|\\d\\d)$",[{parts,
                                                                                                                                                                                                              2}]))),
    <<"xyz">> = iolist_to_binary(join(re:split("xyz","^(?(?=abc)\\w{3}:|\\d\\d)$",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc:","^(?(?!abc)\\d\\d|\\w{3}:)$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc:","^(?(?!abc)\\d\\d|\\w{3}:)$",[{parts,
                                                                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc:","^(?(?!abc)\\d\\d|\\w{3}:)$",[]))),
    <<"">> = iolist_to_binary(join(re:split("12","^(?(?!abc)\\d\\d|\\w{3}:)$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("12","^(?(?!abc)\\d\\d|\\w{3}:)$",[{parts,
                                                                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("12","^(?(?!abc)\\d\\d|\\w{3}:)$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(?(?!abc)\\d\\d|\\w{3}:)$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(?(?!abc)\\d\\d|\\w{3}:)$",[{parts,
                                                                                                                                                                                                                              2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(?(?!abc)\\d\\d|\\w{3}:)$",[]))),
    <<"123">> = iolist_to_binary(join(re:split("123","^(?(?!abc)\\d\\d|\\w{3}:)$",[trim]))),
    <<"123">> = iolist_to_binary(join(re:split("123","^(?(?!abc)\\d\\d|\\w{3}:)$",[{parts,
                                                                                                                                                                                                              2}]))),
    <<"123">> = iolist_to_binary(join(re:split("123","^(?(?!abc)\\d\\d|\\w{3}:)$",[]))),
    <<"xyz">> = iolist_to_binary(join(re:split("xyz","^(?(?!abc)\\d\\d|\\w{3}:)$",[trim]))),
    <<"xyz">> = iolist_to_binary(join(re:split("xyz","^(?(?!abc)\\d\\d|\\w{3}:)$",[{parts,
                                                                                                                                                                                                              2}]))),
    <<"xyz">> = iolist_to_binary(join(re:split("xyz","^(?(?!abc)\\d\\d|\\w{3}:)$",[]))),
    <<"foo">> = iolist_to_binary(join(re:split("foobar","(?(?<=foo)bar|cat)",[trim]))),
    <<"foo:">> = iolist_to_binary(join(re:split("foobar","(?(?<=foo)bar|cat)",[{parts,
                                                                                                                                                                                                2}]))),
    <<"foo:">> = iolist_to_binary(join(re:split("foobar","(?(?<=foo)bar|cat)",[]))),
    <<"">> = iolist_to_binary(join(re:split("cat","(?(?<=foo)bar|cat)",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("cat","(?(?<=foo)bar|cat)",[{parts,
                                                                                                                                                                                          2}]))),
    <<":">> = iolist_to_binary(join(re:split("cat","(?(?<=foo)bar|cat)",[]))),
    <<"f">> = iolist_to_binary(join(re:split("fcat","(?(?<=foo)bar|cat)",[trim]))),
    <<"f:">> = iolist_to_binary(join(re:split("fcat","(?(?<=foo)bar|cat)",[{parts,
                                                                                                                                                                                            2}]))),
    <<"f:">> = iolist_to_binary(join(re:split("fcat","(?(?<=foo)bar|cat)",[]))),
    <<"fo">> = iolist_to_binary(join(re:split("focat","(?(?<=foo)bar|cat)",[trim]))),
    <<"fo:">> = iolist_to_binary(join(re:split("focat","(?(?<=foo)bar|cat)",[{parts,
                                                                                                                                                                                              2}]))),
    <<"fo:">> = iolist_to_binary(join(re:split("focat","(?(?<=foo)bar|cat)",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?(?<=foo)bar|cat)",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?(?<=foo)bar|cat)",[{parts,
                                                                                                                                                                                                          2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?(?<=foo)bar|cat)",[]))),
    <<"foocat">> = iolist_to_binary(join(re:split("foocat","(?(?<=foo)bar|cat)",[trim]))),
    <<"foocat">> = iolist_to_binary(join(re:split("foocat","(?(?<=foo)bar|cat)",[{parts,
                                                                                                                                                                                                2}]))),
    <<"foocat">> = iolist_to_binary(join(re:split("foocat","(?(?<=foo)bar|cat)",[]))),
    <<"foo">> = iolist_to_binary(join(re:split("foobar","(?(?<!foo)cat|bar)",[trim]))),
    <<"foo:">> = iolist_to_binary(join(re:split("foobar","(?(?<!foo)cat|bar)",[{parts,
                                                                                                                                                                                                2}]))),
    <<"foo:">> = iolist_to_binary(join(re:split("foobar","(?(?<!foo)cat|bar)",[]))),
    <<"">> = iolist_to_binary(join(re:split("cat","(?(?<!foo)cat|bar)",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("cat","(?(?<!foo)cat|bar)",[{parts,
                                                                                                                                                                                          2}]))),
    <<":">> = iolist_to_binary(join(re:split("cat","(?(?<!foo)cat|bar)",[]))),
    <<"f">> = iolist_to_binary(join(re:split("fcat","(?(?<!foo)cat|bar)",[trim]))),
    <<"f:">> = iolist_to_binary(join(re:split("fcat","(?(?<!foo)cat|bar)",[{parts,
                                                                                                                                                                                            2}]))),
    <<"f:">> = iolist_to_binary(join(re:split("fcat","(?(?<!foo)cat|bar)",[]))),
    <<"fo">> = iolist_to_binary(join(re:split("focat","(?(?<!foo)cat|bar)",[trim]))),
    <<"fo:">> = iolist_to_binary(join(re:split("focat","(?(?<!foo)cat|bar)",[{parts,
                                                                                                                                                                                              2}]))),
    <<"fo:">> = iolist_to_binary(join(re:split("focat","(?(?<!foo)cat|bar)",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?(?<!foo)cat|bar)",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?(?<!foo)cat|bar)",[{parts,
                                                                                                                                                                                                          2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?(?<!foo)cat|bar)",[]))),
    <<"foocat">> = iolist_to_binary(join(re:split("foocat","(?(?<!foo)cat|bar)",[trim]))),
    <<"foocat">> = iolist_to_binary(join(re:split("foocat","(?(?<!foo)cat|bar)",[{parts,
                                                                                                                                                                                                2}]))),
    <<"foocat">> = iolist_to_binary(join(re:split("foocat","(?(?<!foo)cat|bar)",[]))),
    <<"">> = iolist_to_binary(join(re:split("abcd","( \\( )? [^()]+ (?(1) \\) |) ",[extended,
                                                                                                                                                                                                                  trim]))),
    <<"::">> = iolist_to_binary(join(re:split("abcd","( \\( )? [^()]+ (?(1) \\) |) ",[extended,
                                                                                                                                                                                                                    {parts,
                                                                                                                                                                                                                     2}]))),
    <<"::">> = iolist_to_binary(join(re:split("abcd","( \\( )? [^()]+ (?(1) \\) |) ",[extended]))),
    <<":(">> = iolist_to_binary(join(re:split("(abcd)","( \\( )? [^()]+ (?(1) \\) |) ",[extended,
                                                                                                                                                                                                                      trim]))),
    <<":(:">> = iolist_to_binary(join(re:split("(abcd)","( \\( )? [^()]+ (?(1) \\) |) ",[extended,
                                                                                                                                                                                                                        {parts,
                                                                                                                                                                                                                         2}]))),
    <<":(:">> = iolist_to_binary(join(re:split("(abcd)","( \\( )? [^()]+ (?(1) \\) |) ",[extended]))),
    <<":::(">> = iolist_to_binary(join(re:split("the quick (abcd) fox","( \\( )? [^()]+ (?(1) \\) |) ",[extended,
                                                                                                                                                                                                                                                  trim]))),
    <<"::(abcd) fox">> = iolist_to_binary(join(re:split("the quick (abcd) fox","( \\( )? [^()]+ (?(1) \\) |) ",[extended,
                                                                                                                                                                                                                                                    {parts,
                                                                                                                                                                                                                                                     2}]))),
    <<":::(:::">> = iolist_to_binary(join(re:split("the quick (abcd) fox","( \\( )? [^()]+ (?(1) \\) |) ",[extended]))),
    <<"(">> = iolist_to_binary(join(re:split("(abcd","( \\( )? [^()]+ (?(1) \\) |) ",[extended,
                                                                                                                                                                                                                    trim]))),
    <<"(::">> = iolist_to_binary(join(re:split("(abcd","( \\( )? [^()]+ (?(1) \\) |) ",[extended,
                                                                                                                                                                                                                      {parts,
                                                                                                                                                                                                                       2}]))),
    <<"(::">> = iolist_to_binary(join(re:split("(abcd","( \\( )? [^()]+ (?(1) \\) |) ",[extended]))),
    <<"">> = iolist_to_binary(join(re:split("abcd","( \\( )? [^()]+ (?(1) \\) ) ",[extended,
                                                                                                                                                                                                                trim]))),
    <<"::">> = iolist_to_binary(join(re:split("abcd","( \\( )? [^()]+ (?(1) \\) ) ",[extended,
                                                                                                                                                                                                                  {parts,
                                                                                                                                                                                                                   2}]))),
    <<"::">> = iolist_to_binary(join(re:split("abcd","( \\( )? [^()]+ (?(1) \\) ) ",[extended]))),
    <<":(">> = iolist_to_binary(join(re:split("(abcd)","( \\( )? [^()]+ (?(1) \\) ) ",[extended,
                                                                                                                                                                                                                    trim]))),
    <<":(:">> = iolist_to_binary(join(re:split("(abcd)","( \\( )? [^()]+ (?(1) \\) ) ",[extended,
                                                                                                                                                                                                                      {parts,
                                                                                                                                                                                                                       2}]))),
    <<":(:">> = iolist_to_binary(join(re:split("(abcd)","( \\( )? [^()]+ (?(1) \\) ) ",[extended]))),
    <<":::(">> = iolist_to_binary(join(re:split("the quick (abcd) fox","( \\( )? [^()]+ (?(1) \\) ) ",[extended,
                                                                                                                                                                                                                                                trim]))),
    <<"::(abcd) fox">> = iolist_to_binary(join(re:split("the quick (abcd) fox","( \\( )? [^()]+ (?(1) \\) ) ",[extended,
                                                                                                                                                                                                                                                  {parts,
                                                                                                                                                                                                                                                   2}]))),
    <<":::(:::">> = iolist_to_binary(join(re:split("the quick (abcd) fox","( \\( )? [^()]+ (?(1) \\) ) ",[extended]))),
    <<"(">> = iolist_to_binary(join(re:split("(abcd","( \\( )? [^()]+ (?(1) \\) ) ",[extended,
                                                                                                                                                                                                                  trim]))),
    <<"(::">> = iolist_to_binary(join(re:split("(abcd","( \\( )? [^()]+ (?(1) \\) ) ",[extended,
                                                                                                                                                                                                                    {parts,
                                                                                                                                                                                                                     2}]))),
    <<"(::">> = iolist_to_binary(join(re:split("(abcd","( \\( )? [^()]+ (?(1) \\) ) ",[extended]))),
    <<":1:2">> = iolist_to_binary(join(re:split("12","^(?(2)a|(1)(2))+$",[trim]))),
    <<":1:2:">> = iolist_to_binary(join(re:split("12","^(?(2)a|(1)(2))+$",[{parts,
                                                                                                                                                                                       2}]))),
    <<":1:2:">> = iolist_to_binary(join(re:split("12","^(?(2)a|(1)(2))+$",[]))),
    <<":1:2">> = iolist_to_binary(join(re:split("12a","^(?(2)a|(1)(2))+$",[trim]))),
    <<":1:2:">> = iolist_to_binary(join(re:split("12a","^(?(2)a|(1)(2))+$",[{parts,
                                                                                                                                                                                         2}]))),
    <<":1:2:">> = iolist_to_binary(join(re:split("12a","^(?(2)a|(1)(2))+$",[]))),
    <<":1:2">> = iolist_to_binary(join(re:split("12aa","^(?(2)a|(1)(2))+$",[trim]))),
    <<":1:2:">> = iolist_to_binary(join(re:split("12aa","^(?(2)a|(1)(2))+$",[{parts,
                                                                                                                                                                                           2}]))),
    <<":1:2:">> = iolist_to_binary(join(re:split("12aa","^(?(2)a|(1)(2))+$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(?(2)a|(1)(2))+$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(?(2)a|(1)(2))+$",[{parts,
                                                                                                                                                                                                         2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(?(2)a|(1)(2))+$",[]))),
    <<"1234">> = iolist_to_binary(join(re:split("1234","^(?(2)a|(1)(2))+$",[trim]))),
    <<"1234">> = iolist_to_binary(join(re:split("1234","^(?(2)a|(1)(2))+$",[{parts,
                                                                                                                                                                                           2}]))),
    <<"1234">> = iolist_to_binary(join(re:split("1234","^(?(2)a|(1)(2))+$",[]))),
    <<":blah">> = iolist_to_binary(join(re:split("blah blah","((?i)blah)\\s+\\1",[trim]))),
    <<":blah:">> = iolist_to_binary(join(re:split("blah blah","((?i)blah)\\s+\\1",[{parts,
                                                                                                                                                                                                      2}]))),
    <<":blah:">> = iolist_to_binary(join(re:split("blah blah","((?i)blah)\\s+\\1",[]))),
    <<":BLAH">> = iolist_to_binary(join(re:split("BLAH BLAH","((?i)blah)\\s+\\1",[trim]))),
    <<":BLAH:">> = iolist_to_binary(join(re:split("BLAH BLAH","((?i)blah)\\s+\\1",[{parts,
                                                                                                                                                                                                      2}]))),
    <<":BLAH:">> = iolist_to_binary(join(re:split("BLAH BLAH","((?i)blah)\\s+\\1",[]))),
    <<":Blah">> = iolist_to_binary(join(re:split("Blah Blah","((?i)blah)\\s+\\1",[trim]))),
    <<":Blah:">> = iolist_to_binary(join(re:split("Blah Blah","((?i)blah)\\s+\\1",[{parts,
                                                                                                                                                                                                      2}]))),
    <<":Blah:">> = iolist_to_binary(join(re:split("Blah Blah","((?i)blah)\\s+\\1",[]))),
    <<":blaH">> = iolist_to_binary(join(re:split("blaH blaH","((?i)blah)\\s+\\1",[trim]))),
    <<":blaH:">> = iolist_to_binary(join(re:split("blaH blaH","((?i)blah)\\s+\\1",[{parts,
                                                                                                                                                                                                      2}]))),
    <<":blaH:">> = iolist_to_binary(join(re:split("blaH blaH","((?i)blah)\\s+\\1",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","((?i)blah)\\s+\\1",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","((?i)blah)\\s+\\1",[{parts,
                                                                                                                                                                                                          2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","((?i)blah)\\s+\\1",[]))),
    <<"blah BLAH">> = iolist_to_binary(join(re:split("blah BLAH","((?i)blah)\\s+\\1",[trim]))),
    <<"blah BLAH">> = iolist_to_binary(join(re:split("blah BLAH","((?i)blah)\\s+\\1",[{parts,
                                                                                                                                                                                                      2}]))),
    <<"blah BLAH">> = iolist_to_binary(join(re:split("blah BLAH","((?i)blah)\\s+\\1",[]))),
    <<"Blah blah">> = iolist_to_binary(join(re:split("Blah blah","((?i)blah)\\s+\\1",[trim]))),
    <<"Blah blah">> = iolist_to_binary(join(re:split("Blah blah","((?i)blah)\\s+\\1",[{parts,
                                                                                                                                                                                                      2}]))),
    <<"Blah blah">> = iolist_to_binary(join(re:split("Blah blah","((?i)blah)\\s+\\1",[]))),
    <<"blaH blah">> = iolist_to_binary(join(re:split("blaH blah","((?i)blah)\\s+\\1",[trim]))),
    <<"blaH blah">> = iolist_to_binary(join(re:split("blaH blah","((?i)blah)\\s+\\1",[{parts,
                                                                                                                                                                                                      2}]))),
    <<"blaH blah">> = iolist_to_binary(join(re:split("blaH blah","((?i)blah)\\s+\\1",[]))),
    <<":blah">> = iolist_to_binary(join(re:split("blah blah","((?i)blah)\\s+(?i:\\1)",[trim]))),
    <<":blah:">> = iolist_to_binary(join(re:split("blah blah","((?i)blah)\\s+(?i:\\1)",[{parts,
                                                                                                                                                                                                                2}]))),
    <<":blah:">> = iolist_to_binary(join(re:split("blah blah","((?i)blah)\\s+(?i:\\1)",[]))),
    <<":BLAH">> = iolist_to_binary(join(re:split("BLAH BLAH","((?i)blah)\\s+(?i:\\1)",[trim]))),
    <<":BLAH:">> = iolist_to_binary(join(re:split("BLAH BLAH","((?i)blah)\\s+(?i:\\1)",[{parts,
                                                                                                                                                                                                                2}]))),
    <<":BLAH:">> = iolist_to_binary(join(re:split("BLAH BLAH","((?i)blah)\\s+(?i:\\1)",[]))),
    <<":Blah">> = iolist_to_binary(join(re:split("Blah Blah","((?i)blah)\\s+(?i:\\1)",[trim]))),
    <<":Blah:">> = iolist_to_binary(join(re:split("Blah Blah","((?i)blah)\\s+(?i:\\1)",[{parts,
                                                                                                                                                                                                                2}]))),
    <<":Blah:">> = iolist_to_binary(join(re:split("Blah Blah","((?i)blah)\\s+(?i:\\1)",[]))),
    <<":blaH">> = iolist_to_binary(join(re:split("blaH blaH","((?i)blah)\\s+(?i:\\1)",[trim]))),
    <<":blaH:">> = iolist_to_binary(join(re:split("blaH blaH","((?i)blah)\\s+(?i:\\1)",[{parts,
                                                                                                                                                                                                                2}]))),
    <<":blaH:">> = iolist_to_binary(join(re:split("blaH blaH","((?i)blah)\\s+(?i:\\1)",[]))),
    <<":blah">> = iolist_to_binary(join(re:split("blah BLAH","((?i)blah)\\s+(?i:\\1)",[trim]))),
    <<":blah:">> = iolist_to_binary(join(re:split("blah BLAH","((?i)blah)\\s+(?i:\\1)",[{parts,
                                                                                                                                                                                                                2}]))),
    <<":blah:">> = iolist_to_binary(join(re:split("blah BLAH","((?i)blah)\\s+(?i:\\1)",[]))),
    <<":Blah">> = iolist_to_binary(join(re:split("Blah blah","((?i)blah)\\s+(?i:\\1)",[trim]))),
    <<":Blah:">> = iolist_to_binary(join(re:split("Blah blah","((?i)blah)\\s+(?i:\\1)",[{parts,
                                                                                                                                                                                                                2}]))),
    <<":Blah:">> = iolist_to_binary(join(re:split("Blah blah","((?i)blah)\\s+(?i:\\1)",[]))),
    <<":blaH">> = iolist_to_binary(join(re:split("blaH blah","((?i)blah)\\s+(?i:\\1)",[trim]))),
    <<":blaH:">> = iolist_to_binary(join(re:split("blaH blah","((?i)blah)\\s+(?i:\\1)",[{parts,
                                                                                                                                                                                                                2}]))),
    <<":blaH:">> = iolist_to_binary(join(re:split("blaH blah","((?i)blah)\\s+(?i:\\1)",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","(?>a*)*",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a","(?>a*)*",[{parts,
                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("a","(?>a*)*",[]))),
    <<"">> = iolist_to_binary(join(re:split("aa","(?>a*)*",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aa","(?>a*)*",[{parts,
                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("aa","(?>a*)*",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaa","(?>a*)*",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaa","(?>a*)*",[{parts,
                                                                                                                                                                      2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaa","(?>a*)*",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc","(abc|)+",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("abc","(abc|)+",[{parts,
                                                                                                                                                                    2}]))),
    <<"::">> = iolist_to_binary(join(re:split("abc","(abc|)+",[]))),
    <<"">> = iolist_to_binary(join(re:split("abcabc","(abc|)+",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("abcabc","(abc|)+",[{parts,
                                                                                                                                                                          2}]))),
    <<"::">> = iolist_to_binary(join(re:split("abcabc","(abc|)+",[]))),
    <<"">> = iolist_to_binary(join(re:split("abcabcabc","(abc|)+",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("abcabcabc","(abc|)+",[{parts,
                                                                                                                                                                                2}]))),
    <<"::">> = iolist_to_binary(join(re:split("abcabcabc","(abc|)+",[]))),
    <<"x::y::z">> = iolist_to_binary(join(re:split("xyz","(abc|)+",[trim]))),
    <<"x::yz">> = iolist_to_binary(join(re:split("xyz","(abc|)+",[{parts,
                                                                                                                                                                    2}]))),
    <<"x::y::z::">> = iolist_to_binary(join(re:split("xyz","(abc|)+",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","([a]*)*",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("a","([a]*)*",[{parts,
                                                                                                                                                                2}]))),
    <<"::">> = iolist_to_binary(join(re:split("a","([a]*)*",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaaa","([a]*)*",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("aaaaa","([a]*)*",[{parts,
                                                                                                                                                                        2}]))),
    <<"::">> = iolist_to_binary(join(re:split("aaaaa","([a]*)*",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","([ab]*)*",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("a","([ab]*)*",[{parts,
                                                                                                                                                                  2}]))),
    <<"::">> = iolist_to_binary(join(re:split("a","([ab]*)*",[]))),
    <<"">> = iolist_to_binary(join(re:split("b","([ab]*)*",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("b","([ab]*)*",[{parts,
                                                                                                                                                                  2}]))),
    <<"::">> = iolist_to_binary(join(re:split("b","([ab]*)*",[]))),
    <<"">> = iolist_to_binary(join(re:split("ababab","([ab]*)*",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("ababab","([ab]*)*",[{parts,
                                                                                                                                                                            2}]))),
    <<"::">> = iolist_to_binary(join(re:split("ababab","([ab]*)*",[]))),
    <<"::c::d::e">> = iolist_to_binary(join(re:split("aaaabcde","([ab]*)*",[trim]))),
    <<"::cde">> = iolist_to_binary(join(re:split("aaaabcde","([ab]*)*",[{parts,
                                                                                                                                                                                2}]))),
    <<"::c::d::e::">> = iolist_to_binary(join(re:split("aaaabcde","([ab]*)*",[]))),
    <<"">> = iolist_to_binary(join(re:split("bbbb","([ab]*)*",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("bbbb","([ab]*)*",[{parts,
                                                                                                                                                                        2}]))),
    <<"::">> = iolist_to_binary(join(re:split("bbbb","([ab]*)*",[]))),
    <<"">> = iolist_to_binary(join(re:split("b","([^a]*)*",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("b","([^a]*)*",[{parts,
                                                                                                                                                                  2}]))),
    <<"::">> = iolist_to_binary(join(re:split("b","([^a]*)*",[]))),
    <<"">> = iolist_to_binary(join(re:split("bbbb","([^a]*)*",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("bbbb","([^a]*)*",[{parts,
                                                                                                                                                                        2}]))),
    <<"::">> = iolist_to_binary(join(re:split("bbbb","([^a]*)*",[]))),
    <<"a::a::a">> = iolist_to_binary(join(re:split("aaa","([^a]*)*",[trim]))),
    <<"a::aa">> = iolist_to_binary(join(re:split("aaa","([^a]*)*",[{parts,
                                                                                                                                                                      2}]))),
    <<"a::a::a::">> = iolist_to_binary(join(re:split("aaa","([^a]*)*",[]))),
    <<"">> = iolist_to_binary(join(re:split("cccc","([^ab]*)*",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("cccc","([^ab]*)*",[{parts,
                                                                                                                                                                          2}]))),
    <<"::">> = iolist_to_binary(join(re:split("cccc","([^ab]*)*",[]))),
    <<"a::b::a::b">> = iolist_to_binary(join(re:split("abab","([^ab]*)*",[trim]))),
    <<"a::bab">> = iolist_to_binary(join(re:split("abab","([^ab]*)*",[{parts,
                                                                                                                                                                          2}]))),
    <<"a::b::a::b::">> = iolist_to_binary(join(re:split("abab","([^ab]*)*",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","([a]*?)*",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("a","([a]*?)*",[{parts,
                                                                                                                                                                  2}]))),
    <<"::">> = iolist_to_binary(join(re:split("a","([a]*?)*",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaa","([a]*?)*",[trim]))),
    <<"::aaa">> = iolist_to_binary(join(re:split("aaaa","([a]*?)*",[{parts,
                                                                                                                                                                        2}]))),
    <<"::::::::">> = iolist_to_binary(join(re:split("aaaa","([a]*?)*",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","([ab]*?)*",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("a","([ab]*?)*",[{parts,
                                                                                                                                                                    2}]))),
    <<"::">> = iolist_to_binary(join(re:split("a","([ab]*?)*",[]))),
    <<"">> = iolist_to_binary(join(re:split("b","([ab]*?)*",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("b","([ab]*?)*",[{parts,
                                                                                                                                                                    2}]))),
    <<"::">> = iolist_to_binary(join(re:split("b","([ab]*?)*",[]))),
    <<"">> = iolist_to_binary(join(re:split("abab","([ab]*?)*",[trim]))),
    <<"::bab">> = iolist_to_binary(join(re:split("abab","([ab]*?)*",[{parts,
                                                                                                                                                                          2}]))),
    <<"::::::::">> = iolist_to_binary(join(re:split("abab","([ab]*?)*",[]))),
    <<"">> = iolist_to_binary(join(re:split("baba","([ab]*?)*",[trim]))),
    <<"::aba">> = iolist_to_binary(join(re:split("baba","([ab]*?)*",[{parts,
                                                                                                                                                                          2}]))),
    <<"::::::::">> = iolist_to_binary(join(re:split("baba","([ab]*?)*",[]))),
    <<"">> = iolist_to_binary(join(re:split("b","([^a]*?)*",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("b","([^a]*?)*",[{parts,
                                                                                                                                                                    2}]))),
    <<"::">> = iolist_to_binary(join(re:split("b","([^a]*?)*",[]))),
    <<"">> = iolist_to_binary(join(re:split("bbbb","([^a]*?)*",[trim]))),
    <<"::bbb">> = iolist_to_binary(join(re:split("bbbb","([^a]*?)*",[{parts,
                                                                                                                                                                          2}]))),
    <<"::::::::">> = iolist_to_binary(join(re:split("bbbb","([^a]*?)*",[]))),
    <<"a::a::a">> = iolist_to_binary(join(re:split("aaa","([^a]*?)*",[trim]))),
    <<"a::aa">> = iolist_to_binary(join(re:split("aaa","([^a]*?)*",[{parts,
                                                                                                                                                                        2}]))),
    <<"a::a::a::">> = iolist_to_binary(join(re:split("aaa","([^a]*?)*",[]))),
    <<"">> = iolist_to_binary(join(re:split("c","([^ab]*?)*",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("c","([^ab]*?)*",[{parts,
                                                                                                                                                                      2}]))),
    <<"::">> = iolist_to_binary(join(re:split("c","([^ab]*?)*",[]))),
    <<"">> = iolist_to_binary(join(re:split("cccc","([^ab]*?)*",[trim]))),
    <<"::ccc">> = iolist_to_binary(join(re:split("cccc","([^ab]*?)*",[{parts,
                                                                                                                                                                            2}]))),
    <<"::::::::">> = iolist_to_binary(join(re:split("cccc","([^ab]*?)*",[]))),
    <<"b::a::b::a">> = iolist_to_binary(join(re:split("baba","([^ab]*?)*",[trim]))),
    <<"b::aba">> = iolist_to_binary(join(re:split("baba","([^ab]*?)*",[{parts,
                                                                                                                                                                            2}]))),
    <<"b::a::b::a::">> = iolist_to_binary(join(re:split("baba","([^ab]*?)*",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","(?>a*)*",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a","(?>a*)*",[{parts,
                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("a","(?>a*)*",[]))),
    <<":b:c:d:e">> = iolist_to_binary(join(re:split("aaabcde","(?>a*)*",[trim]))),
    <<":bcde">> = iolist_to_binary(join(re:split("aaabcde","(?>a*)*",[{parts,
                                                                                                                                                                            2}]))),
    <<":b:c:d:e:">> = iolist_to_binary(join(re:split("aaabcde","(?>a*)*",[]))),
    ok.
run14() ->
    <<"">> = iolist_to_binary(join(re:split("aaaaa","((?>a*))*",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("aaaaa","((?>a*))*",[{parts,
                                                                                                                                                                            2}]))),
    <<"::">> = iolist_to_binary(join(re:split("aaaaa","((?>a*))*",[]))),
    <<"::b::b">> = iolist_to_binary(join(re:split("aabbaa","((?>a*))*",[trim]))),
    <<"::bbaa">> = iolist_to_binary(join(re:split("aabbaa","((?>a*))*",[{parts,
                                                                                                                                                                              2}]))),
    <<"::b::b::">> = iolist_to_binary(join(re:split("aabbaa","((?>a*))*",[]))),
    <<"a::a::a::a::a">> = iolist_to_binary(join(re:split("aaaaa","((?>a*?))*",[trim]))),
    <<"a::aaaa">> = iolist_to_binary(join(re:split("aaaaa","((?>a*?))*",[{parts,
                                                                                                                                                                              2}]))),
    <<"a::a::a::a::a::">> = iolist_to_binary(join(re:split("aaaaa","((?>a*?))*",[]))),
    <<"a::a::b::b::a::a">> = iolist_to_binary(join(re:split("aabbaa","((?>a*?))*",[trim]))),
    <<"a::abbaa">> = iolist_to_binary(join(re:split("aabbaa","((?>a*?))*",[{parts,
                                                                                                                                                                                2}]))),
    <<"a::a::b::b::a::a::">> = iolist_to_binary(join(re:split("aabbaa","((?>a*?))*",[]))),
    <<"">> = iolist_to_binary(join(re:split("12-sep-98","(?(?=[^a-z]+[a-z])  \\d{2}-[a-z]{3}-\\d{2}  |  \\d{2}-\\d{2}-\\d{2} ) ",[extended,
                                                                                                                                                                                                                                                                                                                 trim]))),
    <<":">> = iolist_to_binary(join(re:split("12-sep-98","(?(?=[^a-z]+[a-z])  \\d{2}-[a-z]{3}-\\d{2}  |  \\d{2}-\\d{2}-\\d{2} ) ",[extended,
                                                                                                                                                                                                                                                                                                                   {parts,
                                                                                                                                                                                                                                                                                                                    2}]))),
    <<":">> = iolist_to_binary(join(re:split("12-sep-98","(?(?=[^a-z]+[a-z])  \\d{2}-[a-z]{3}-\\d{2}  |  \\d{2}-\\d{2}-\\d{2} ) ",[extended]))),
    <<"">> = iolist_to_binary(join(re:split("12-09-98","(?(?=[^a-z]+[a-z])  \\d{2}-[a-z]{3}-\\d{2}  |  \\d{2}-\\d{2}-\\d{2} ) ",[extended,
                                                                                                                                                                                                                                                                                                               trim]))),
    <<":">> = iolist_to_binary(join(re:split("12-09-98","(?(?=[^a-z]+[a-z])  \\d{2}-[a-z]{3}-\\d{2}  |  \\d{2}-\\d{2}-\\d{2} ) ",[extended,
                                                                                                                                                                                                                                                                                                                 {parts,
                                                                                                                                                                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("12-09-98","(?(?=[^a-z]+[a-z])  \\d{2}-[a-z]{3}-\\d{2}  |  \\d{2}-\\d{2}-\\d{2} ) ",[extended]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?(?=[^a-z]+[a-z])  \\d{2}-[a-z]{3}-\\d{2}  |  \\d{2}-\\d{2}-\\d{2} ) ",[extended,
                                                                                                                                                                                                                                                                                                                     trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?(?=[^a-z]+[a-z])  \\d{2}-[a-z]{3}-\\d{2}  |  \\d{2}-\\d{2}-\\d{2} ) ",[extended,
                                                                                                                                                                                                                                                                                                                       {parts,
                                                                                                                                                                                                                                                                                                                        2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?(?=[^a-z]+[a-z])  \\d{2}-[a-z]{3}-\\d{2}  |  \\d{2}-\\d{2}-\\d{2} ) ",[extended]))),
    <<"sep-12-98">> = iolist_to_binary(join(re:split("sep-12-98","(?(?=[^a-z]+[a-z])  \\d{2}-[a-z]{3}-\\d{2}  |  \\d{2}-\\d{2}-\\d{2} ) ",[extended,
                                                                                                                                                                                                                                                                                                                 trim]))),
    <<"sep-12-98">> = iolist_to_binary(join(re:split("sep-12-98","(?(?=[^a-z]+[a-z])  \\d{2}-[a-z]{3}-\\d{2}  |  \\d{2}-\\d{2}-\\d{2} ) ",[extended,
                                                                                                                                                                                                                                                                                                                   {parts,
                                                                                                                                                                                                                                                                                                                    2}]))),
    <<"sep-12-98">> = iolist_to_binary(join(re:split("sep-12-98","(?(?=[^a-z]+[a-z])  \\d{2}-[a-z]{3}-\\d{2}  |  \\d{2}-\\d{2}-\\d{2} ) ",[extended]))),
    <<"foo:foo">> = iolist_to_binary(join(re:split("foobarfoo","(?<=(foo))bar\\1",[trim]))),
    <<"foo:foo:">> = iolist_to_binary(join(re:split("foobarfoo","(?<=(foo))bar\\1",[{parts,
                                                                                                                                                                                                   2}]))),
    <<"foo:foo:">> = iolist_to_binary(join(re:split("foobarfoo","(?<=(foo))bar\\1",[]))),
    <<"foo:foo:tling">> = iolist_to_binary(join(re:split("foobarfootling","(?<=(foo))bar\\1",[trim]))),
    <<"foo:foo:tling">> = iolist_to_binary(join(re:split("foobarfootling","(?<=(foo))bar\\1",[{parts,
                                                                                                                                                                                                             2}]))),
    <<"foo:foo:tling">> = iolist_to_binary(join(re:split("foobarfootling","(?<=(foo))bar\\1",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=(foo))bar\\1",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=(foo))bar\\1",[{parts,
                                                                                                                                                                                                       2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=(foo))bar\\1",[]))),
    <<"foobar">> = iolist_to_binary(join(re:split("foobar","(?<=(foo))bar\\1",[trim]))),
    <<"foobar">> = iolist_to_binary(join(re:split("foobar","(?<=(foo))bar\\1",[{parts,
                                                                                                                                                                                             2}]))),
    <<"foobar">> = iolist_to_binary(join(re:split("foobar","(?<=(foo))bar\\1",[]))),
    <<"barfoo">> = iolist_to_binary(join(re:split("barfoo","(?<=(foo))bar\\1",[trim]))),
    <<"barfoo">> = iolist_to_binary(join(re:split("barfoo","(?<=(foo))bar\\1",[{parts,
                                                                                                                                                                                             2}]))),
    <<"barfoo">> = iolist_to_binary(join(re:split("barfoo","(?<=(foo))bar\\1",[]))),
    <<"">> = iolist_to_binary(join(re:split("saturday","(?i:saturday|sunday)",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("saturday","(?i:saturday|sunday)",[{parts,
                                                                                                                                                                                                        2}]))),
    <<":">> = iolist_to_binary(join(re:split("saturday","(?i:saturday|sunday)",[]))),
    <<"">> = iolist_to_binary(join(re:split("sunday","(?i:saturday|sunday)",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("sunday","(?i:saturday|sunday)",[{parts,
                                                                                                                                                                                                    2}]))),
    <<":">> = iolist_to_binary(join(re:split("sunday","(?i:saturday|sunday)",[]))),
    <<"">> = iolist_to_binary(join(re:split("Saturday","(?i:saturday|sunday)",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("Saturday","(?i:saturday|sunday)",[{parts,
                                                                                                                                                                                                        2}]))),
    <<":">> = iolist_to_binary(join(re:split("Saturday","(?i:saturday|sunday)",[]))),
    <<"">> = iolist_to_binary(join(re:split("Sunday","(?i:saturday|sunday)",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("Sunday","(?i:saturday|sunday)",[{parts,
                                                                                                                                                                                                    2}]))),
    <<":">> = iolist_to_binary(join(re:split("Sunday","(?i:saturday|sunday)",[]))),
    <<"">> = iolist_to_binary(join(re:split("SATURDAY","(?i:saturday|sunday)",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("SATURDAY","(?i:saturday|sunday)",[{parts,
                                                                                                                                                                                                        2}]))),
    <<":">> = iolist_to_binary(join(re:split("SATURDAY","(?i:saturday|sunday)",[]))),
    <<"">> = iolist_to_binary(join(re:split("SUNDAY","(?i:saturday|sunday)",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("SUNDAY","(?i:saturday|sunday)",[{parts,
                                                                                                                                                                                                    2}]))),
    <<":">> = iolist_to_binary(join(re:split("SUNDAY","(?i:saturday|sunday)",[]))),
    <<"">> = iolist_to_binary(join(re:split("SunDay","(?i:saturday|sunday)",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("SunDay","(?i:saturday|sunday)",[{parts,
                                                                                                                                                                                                    2}]))),
    <<":">> = iolist_to_binary(join(re:split("SunDay","(?i:saturday|sunday)",[]))),
    <<":abc">> = iolist_to_binary(join(re:split("abcx","(a(?i)bc|BB)x",[trim]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abcx","(a(?i)bc|BB)x",[{parts,
                                                                                                                                                                                  2}]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abcx","(a(?i)bc|BB)x",[]))),
    <<":aBC">> = iolist_to_binary(join(re:split("aBCx","(a(?i)bc|BB)x",[trim]))),
    <<":aBC:">> = iolist_to_binary(join(re:split("aBCx","(a(?i)bc|BB)x",[{parts,
                                                                                                                                                                                  2}]))),
    <<":aBC:">> = iolist_to_binary(join(re:split("aBCx","(a(?i)bc|BB)x",[]))),
    <<":bb">> = iolist_to_binary(join(re:split("bbx","(a(?i)bc|BB)x",[trim]))),
    <<":bb:">> = iolist_to_binary(join(re:split("bbx","(a(?i)bc|BB)x",[{parts,
                                                                                                                                                                                2}]))),
    <<":bb:">> = iolist_to_binary(join(re:split("bbx","(a(?i)bc|BB)x",[]))),
    <<":BB">> = iolist_to_binary(join(re:split("BBx","(a(?i)bc|BB)x",[trim]))),
    <<":BB:">> = iolist_to_binary(join(re:split("BBx","(a(?i)bc|BB)x",[{parts,
                                                                                                                                                                                2}]))),
    <<":BB:">> = iolist_to_binary(join(re:split("BBx","(a(?i)bc|BB)x",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(a(?i)bc|BB)x",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(a(?i)bc|BB)x",[{parts,
                                                                                                                                                                                                2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(a(?i)bc|BB)x",[]))),
    <<"abcX">> = iolist_to_binary(join(re:split("abcX","(a(?i)bc|BB)x",[trim]))),
    <<"abcX">> = iolist_to_binary(join(re:split("abcX","(a(?i)bc|BB)x",[{parts,
                                                                                                                                                                                  2}]))),
    <<"abcX">> = iolist_to_binary(join(re:split("abcX","(a(?i)bc|BB)x",[]))),
    <<"aBCX">> = iolist_to_binary(join(re:split("aBCX","(a(?i)bc|BB)x",[trim]))),
    <<"aBCX">> = iolist_to_binary(join(re:split("aBCX","(a(?i)bc|BB)x",[{parts,
                                                                                                                                                                                  2}]))),
    <<"aBCX">> = iolist_to_binary(join(re:split("aBCX","(a(?i)bc|BB)x",[]))),
    <<"bbX">> = iolist_to_binary(join(re:split("bbX","(a(?i)bc|BB)x",[trim]))),
    <<"bbX">> = iolist_to_binary(join(re:split("bbX","(a(?i)bc|BB)x",[{parts,
                                                                                                                                                                                2}]))),
    <<"bbX">> = iolist_to_binary(join(re:split("bbX","(a(?i)bc|BB)x",[]))),
    <<"BBX">> = iolist_to_binary(join(re:split("BBX","(a(?i)bc|BB)x",[trim]))),
    <<"BBX">> = iolist_to_binary(join(re:split("BBX","(a(?i)bc|BB)x",[{parts,
                                                                                                                                                                                2}]))),
    <<"BBX">> = iolist_to_binary(join(re:split("BBX","(a(?i)bc|BB)x",[]))),
    <<":ac">> = iolist_to_binary(join(re:split("ac","^([ab](?i)[cd]|[ef])",[trim]))),
    <<":ac:">> = iolist_to_binary(join(re:split("ac","^([ab](?i)[cd]|[ef])",[{parts,
                                                                                                                                                                                            2}]))),
    <<":ac:">> = iolist_to_binary(join(re:split("ac","^([ab](?i)[cd]|[ef])",[]))),
    <<":aC">> = iolist_to_binary(join(re:split("aC","^([ab](?i)[cd]|[ef])",[trim]))),
    <<":aC:">> = iolist_to_binary(join(re:split("aC","^([ab](?i)[cd]|[ef])",[{parts,
                                                                                                                                                                                            2}]))),
    <<":aC:">> = iolist_to_binary(join(re:split("aC","^([ab](?i)[cd]|[ef])",[]))),
    <<":bD">> = iolist_to_binary(join(re:split("bD","^([ab](?i)[cd]|[ef])",[trim]))),
    <<":bD:">> = iolist_to_binary(join(re:split("bD","^([ab](?i)[cd]|[ef])",[{parts,
                                                                                                                                                                                            2}]))),
    <<":bD:">> = iolist_to_binary(join(re:split("bD","^([ab](?i)[cd]|[ef])",[]))),
    <<":e:lephant">> = iolist_to_binary(join(re:split("elephant","^([ab](?i)[cd]|[ef])",[trim]))),
    <<":e:lephant">> = iolist_to_binary(join(re:split("elephant","^([ab](?i)[cd]|[ef])",[{parts,
                                                                                                                                                                                                        2}]))),
    <<":e:lephant">> = iolist_to_binary(join(re:split("elephant","^([ab](?i)[cd]|[ef])",[]))),
    <<":E:urope">> = iolist_to_binary(join(re:split("Europe","^([ab](?i)[cd]|[ef])",[trim]))),
    <<":E:urope">> = iolist_to_binary(join(re:split("Europe","^([ab](?i)[cd]|[ef])",[{parts,
                                                                                                                                                                                                    2}]))),
    <<":E:urope">> = iolist_to_binary(join(re:split("Europe","^([ab](?i)[cd]|[ef])",[]))),
    <<":f:rog">> = iolist_to_binary(join(re:split("frog","^([ab](?i)[cd]|[ef])",[trim]))),
    <<":f:rog">> = iolist_to_binary(join(re:split("frog","^([ab](?i)[cd]|[ef])",[{parts,
                                                                                                                                                                                                2}]))),
    <<":f:rog">> = iolist_to_binary(join(re:split("frog","^([ab](?i)[cd]|[ef])",[]))),
    <<":F:rance">> = iolist_to_binary(join(re:split("France","^([ab](?i)[cd]|[ef])",[trim]))),
    <<":F:rance">> = iolist_to_binary(join(re:split("France","^([ab](?i)[cd]|[ef])",[{parts,
                                                                                                                                                                                                    2}]))),
    <<":F:rance">> = iolist_to_binary(join(re:split("France","^([ab](?i)[cd]|[ef])",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^([ab](?i)[cd]|[ef])",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^([ab](?i)[cd]|[ef])",[{parts,
                                                                                                                                                                                                              2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^([ab](?i)[cd]|[ef])",[]))),
    <<"Africa">> = iolist_to_binary(join(re:split("Africa","^([ab](?i)[cd]|[ef])",[trim]))),
    <<"Africa">> = iolist_to_binary(join(re:split("Africa","^([ab](?i)[cd]|[ef])",[{parts,
                                                                                                                                                                                                    2}]))),
    <<"Africa">> = iolist_to_binary(join(re:split("Africa","^([ab](?i)[cd]|[ef])",[]))),
    <<":ab">> = iolist_to_binary(join(re:split("ab","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[trim]))),
    <<":ab:">> = iolist_to_binary(join(re:split("ab","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[{parts,
                                                                                                                                                                                                                    2}]))),
    <<":ab:">> = iolist_to_binary(join(re:split("ab","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[]))),
    <<":aBd">> = iolist_to_binary(join(re:split("aBd","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[trim]))),
    <<":aBd:">> = iolist_to_binary(join(re:split("aBd","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[{parts,
                                                                                                                                                                                                                      2}]))),
    <<":aBd:">> = iolist_to_binary(join(re:split("aBd","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[]))),
    <<":xy">> = iolist_to_binary(join(re:split("xy","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[trim]))),
    <<":xy:">> = iolist_to_binary(join(re:split("xy","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[{parts,
                                                                                                                                                                                                                    2}]))),
    <<":xy:">> = iolist_to_binary(join(re:split("xy","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[]))),
    <<":xY">> = iolist_to_binary(join(re:split("xY","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[trim]))),
    <<":xY:">> = iolist_to_binary(join(re:split("xY","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[{parts,
                                                                                                                                                                                                                    2}]))),
    <<":xY:">> = iolist_to_binary(join(re:split("xY","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[]))),
    <<":z:ebra">> = iolist_to_binary(join(re:split("zebra","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[trim]))),
    <<":z:ebra">> = iolist_to_binary(join(re:split("zebra","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[{parts,
                                                                                                                                                                                                                          2}]))),
    <<":z:ebra">> = iolist_to_binary(join(re:split("zebra","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[]))),
    <<":Z:ambesi">> = iolist_to_binary(join(re:split("Zambesi","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[trim]))),
    <<":Z:ambesi">> = iolist_to_binary(join(re:split("Zambesi","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[{parts,
                                                                                                                                                                                                                              2}]))),
    <<":Z:ambesi">> = iolist_to_binary(join(re:split("Zambesi","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[{parts,
                                                                                                                                                                                                                                      2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[]))),
    <<"aCD">> = iolist_to_binary(join(re:split("aCD","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[trim]))),
    <<"aCD">> = iolist_to_binary(join(re:split("aCD","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[{parts,
                                                                                                                                                                                                                      2}]))),
    <<"aCD">> = iolist_to_binary(join(re:split("aCD","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[]))),
    <<"XY">> = iolist_to_binary(join(re:split("XY","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[trim]))),
    <<"XY">> = iolist_to_binary(join(re:split("XY","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[{parts,
                                                                                                                                                                                                                    2}]))),
    <<"XY">> = iolist_to_binary(join(re:split("XY","^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)",[]))),
    <<"foo
">> = iolist_to_binary(join(re:split("foo
bar","(?<=foo\\n)^bar",[multiline,trim]))),
    <<"foo
:">> = iolist_to_binary(join(re:split("foo
bar","(?<=foo\\n)^bar",[multiline,{parts,2}]))),
    <<"foo
:">> = iolist_to_binary(join(re:split("foo
bar","(?<=foo\\n)^bar",[multiline]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=foo\\n)^bar",[multiline,
                                                                                                                                                                                                   trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=foo\\n)^bar",[multiline,
                                                                                                                                                                                                     {parts,
                                                                                                                                                                                                      2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=foo\\n)^bar",[multiline]))),
    <<"bar">> = iolist_to_binary(join(re:split("bar","(?<=foo\\n)^bar",[multiline,
                                                                                                                                                                                   trim]))),
    <<"bar">> = iolist_to_binary(join(re:split("bar","(?<=foo\\n)^bar",[multiline,
                                                                                                                                                                                     {parts,
                                                                                                                                                                                      2}]))),
    <<"bar">> = iolist_to_binary(join(re:split("bar","(?<=foo\\n)^bar",[multiline]))),
    <<"baz
bar">> = iolist_to_binary(join(re:split("baz
bar","(?<=foo\\n)^bar",[multiline,trim]))),
    <<"baz
bar">> = iolist_to_binary(join(re:split("baz
bar","(?<=foo\\n)^bar",[multiline,{parts,2}]))),
    <<"baz
bar">> = iolist_to_binary(join(re:split("baz
bar","(?<=foo\\n)^bar",[multiline]))),
    <<"bar">> = iolist_to_binary(join(re:split("barbaz","(?<=(?<!foo)bar)baz",[trim]))),
    <<"bar:">> = iolist_to_binary(join(re:split("barbaz","(?<=(?<!foo)bar)baz",[{parts,
                                                                                                                                                                                                  2}]))),
    <<"bar:">> = iolist_to_binary(join(re:split("barbaz","(?<=(?<!foo)bar)baz",[]))),
    <<"barbar">> = iolist_to_binary(join(re:split("barbarbaz","(?<=(?<!foo)bar)baz",[trim]))),
    <<"barbar:">> = iolist_to_binary(join(re:split("barbarbaz","(?<=(?<!foo)bar)baz",[{parts,
                                                                                                                                                                                                        2}]))),
    <<"barbar:">> = iolist_to_binary(join(re:split("barbarbaz","(?<=(?<!foo)bar)baz",[]))),
    <<"koobar">> = iolist_to_binary(join(re:split("koobarbaz","(?<=(?<!foo)bar)baz",[trim]))),
    <<"koobar:">> = iolist_to_binary(join(re:split("koobarbaz","(?<=(?<!foo)bar)baz",[{parts,
                                                                                                                                                                                                        2}]))),
    <<"koobar:">> = iolist_to_binary(join(re:split("koobarbaz","(?<=(?<!foo)bar)baz",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=(?<!foo)bar)baz",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=(?<!foo)bar)baz",[{parts,
                                                                                                                                                                                                            2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=(?<!foo)bar)baz",[]))),
    <<"baz">> = iolist_to_binary(join(re:split("baz","(?<=(?<!foo)bar)baz",[trim]))),
    <<"baz">> = iolist_to_binary(join(re:split("baz","(?<=(?<!foo)bar)baz",[{parts,
                                                                                                                                                                                            2}]))),
    <<"baz">> = iolist_to_binary(join(re:split("baz","(?<=(?<!foo)bar)baz",[]))),
    <<"foobarbaz">> = iolist_to_binary(join(re:split("foobarbaz","(?<=(?<!foo)bar)baz",[trim]))),
    <<"foobarbaz">> = iolist_to_binary(join(re:split("foobarbaz","(?<=(?<!foo)bar)baz",[{parts,
                                                                                                                                                                                                        2}]))),
    <<"foobarbaz">> = iolist_to_binary(join(re:split("foobarbaz","(?<=(?<!foo)bar)baz",[]))),
    <<"a">> = iolist_to_binary(join(re:split("a","^(a\\1?){4}$",[trim]))),
    <<"a">> = iolist_to_binary(join(re:split("a","^(a\\1?){4}$",[{parts,
                                                                                                                                                                            2}]))),
    <<"a">> = iolist_to_binary(join(re:split("a","^(a\\1?){4}$",[]))),
    <<"aa">> = iolist_to_binary(join(re:split("aa","^(a\\1?){4}$",[trim]))),
    <<"aa">> = iolist_to_binary(join(re:split("aa","^(a\\1?){4}$",[{parts,
                                                                                                                                                                              2}]))),
    <<"aa">> = iolist_to_binary(join(re:split("aa","^(a\\1?){4}$",[]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","^(a\\1?){4}$",[trim]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","^(a\\1?){4}$",[{parts,
                                                                                                                                                                                2}]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","^(a\\1?){4}$",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aaaaa","^(a\\1?){4}$",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaaaa","^(a\\1?){4}$",[{parts,
                                                                                                                                                                                    2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaaaa","^(a\\1?){4}$",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aaaaaaa","^(a\\1?){4}$",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaaaaaa","^(a\\1?){4}$",[{parts,
                                                                                                                                                                                        2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaaaaaa","^(a\\1?){4}$",[]))),
    <<"aaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaa","^(a\\1?){4}$",[trim]))),
    <<"aaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaa","^(a\\1?){4}$",[{parts,
                                                                                                                                                                                          2}]))),
    <<"aaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaa","^(a\\1?){4}$",[]))),
    <<"aaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaa","^(a\\1?){4}$",[trim]))),
    <<"aaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaa","^(a\\1?){4}$",[{parts,
                                                                                                                                                                                            2}]))),
    <<"aaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaa","^(a\\1?){4}$",[]))),
    <<":aaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaa","^(a\\1?){4}$",[trim]))),
    <<":aaaa:">> = iolist_to_binary(join(re:split("aaaaaaaaaa","^(a\\1?){4}$",[{parts,
                                                                                                                                                                                              2}]))),
    <<":aaaa:">> = iolist_to_binary(join(re:split("aaaaaaaaaa","^(a\\1?){4}$",[]))),
    <<"aaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaa","^(a\\1?){4}$",[trim]))),
    <<"aaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaa","^(a\\1?){4}$",[{parts,
                                                                                                                                                                                                2}]))),
    <<"aaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaa","^(a\\1?){4}$",[]))),
    <<"aaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaa","^(a\\1?){4}$",[trim]))),
    <<"aaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaa","^(a\\1?){4}$",[{parts,
                                                                                                                                                                                                  2}]))),
    <<"aaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaa","^(a\\1?){4}$",[]))),
    <<"aaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaa","^(a\\1?){4}$",[trim]))),
    <<"aaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaa","^(a\\1?){4}$",[{parts,
                                                                                                                                                                                                    2}]))),
    <<"aaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaa","^(a\\1?){4}$",[]))),
    <<"aaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaa","^(a\\1?){4}$",[trim]))),
    <<"aaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaa","^(a\\1?){4}$",[{parts,
                                                                                                                                                                                                      2}]))),
    <<"aaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaa","^(a\\1?){4}$",[]))),
    <<"aaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaa","^(a\\1?){4}$",[trim]))),
    <<"aaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaa","^(a\\1?){4}$",[{parts,
                                                                                                                                                                                                        2}]))),
    <<"aaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaa","^(a\\1?){4}$",[]))),
    <<"aaaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaa","^(a\\1?){4}$",[trim]))),
    <<"aaaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaa","^(a\\1?){4}$",[{parts,
                                                                                                                                                                                                          2}]))),
    <<"aaaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaa","^(a\\1?){4}$",[]))),
    <<"a">> = iolist_to_binary(join(re:split("a","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[trim]))),
    <<"a">> = iolist_to_binary(join(re:split("a","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[{parts,
                                                                                                                                                                                                                   2}]))),
    <<"a">> = iolist_to_binary(join(re:split("a","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[]))),
    <<"aa">> = iolist_to_binary(join(re:split("aa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[trim]))),
    <<"aa">> = iolist_to_binary(join(re:split("aa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[{parts,
                                                                                                                                                                                                                     2}]))),
    <<"aa">> = iolist_to_binary(join(re:split("aa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[trim]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[{parts,
                                                                                                                                                                                                                       2}]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[]))),
    <<":a:a:a:a">> = iolist_to_binary(join(re:split("aaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[trim]))),
    <<":a:a:a:a:">> = iolist_to_binary(join(re:split("aaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[{parts,
                                                                                                                                                                                                                         2}]))),
    <<":a:a:a:a:">> = iolist_to_binary(join(re:split("aaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[]))),
    <<":a:aa:a:a">> = iolist_to_binary(join(re:split("aaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[trim]))),
    <<":a:aa:a:a:">> = iolist_to_binary(join(re:split("aaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[{parts,
                                                                                                                                                                                                                           2}]))),
    <<":a:aa:a:a:">> = iolist_to_binary(join(re:split("aaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[]))),
    <<":a:aa:a:aa">> = iolist_to_binary(join(re:split("aaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[trim]))),
    <<":a:aa:a:aa:">> = iolist_to_binary(join(re:split("aaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[{parts,
                                                                                                                                                                                                                             2}]))),
    <<":a:aa:a:aa:">> = iolist_to_binary(join(re:split("aaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[]))),
    <<":a:aa:aaa:a">> = iolist_to_binary(join(re:split("aaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[trim]))),
    <<":a:aa:aaa:a:">> = iolist_to_binary(join(re:split("aaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[{parts,
                                                                                                                                                                                                                               2}]))),
    <<":a:aa:aaa:a:">> = iolist_to_binary(join(re:split("aaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[]))),
    <<"aaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[trim]))),
    <<"aaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[{parts,
                                                                                                                                                                                                                                 2}]))),
    <<"aaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[]))),
    <<"aaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[trim]))),
    <<"aaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[{parts,
                                                                                                                                                                                                                                   2}]))),
    <<"aaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[]))),
    <<":a:aa:aaa:aaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[trim]))),
    <<":a:aa:aaa:aaaa:">> = iolist_to_binary(join(re:split("aaaaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[{parts,
                                                                                                                                                                                                                                     2}]))),
    <<":a:aa:aaa:aaaa:">> = iolist_to_binary(join(re:split("aaaaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[]))),
    <<"aaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[trim]))),
    <<"aaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[{parts,
                                                                                                                                                                                                                                       2}]))),
    <<"aaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[]))),
    <<"aaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[trim]))),
    <<"aaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[{parts,
                                                                                                                                                                                                                                         2}]))),
    <<"aaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[]))),
    <<"aaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[trim]))),
    <<"aaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[{parts,
                                                                                                                                                                                                                                           2}]))),
    <<"aaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[]))),
    <<"aaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[trim]))),
    <<"aaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[{parts,
                                                                                                                                                                                                                                             2}]))),
    <<"aaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[]))),
    <<"aaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[trim]))),
    <<"aaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[{parts,
                                                                                                                                                                                                                                               2}]))),
    <<"aaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[]))),
    <<"aaaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[trim]))),
    <<"aaaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[{parts,
                                                                                                                                                                                                                                                 2}]))),
    <<"aaaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaa","^(a\\1?)(a\\1?)(a\\2?)(a\\3?)$",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc","abc",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","abc",[{parts,
                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","abc",[]))),
    <<"x:y">> = iolist_to_binary(join(re:split("xabcy","abc",[trim]))),
    <<"x:y">> = iolist_to_binary(join(re:split("xabcy","abc",[{parts,
                                                                                                                                                                2}]))),
    <<"x:y">> = iolist_to_binary(join(re:split("xabcy","abc",[]))),
    <<"ab">> = iolist_to_binary(join(re:split("ababc","abc",[trim]))),
    <<"ab:">> = iolist_to_binary(join(re:split("ababc","abc",[{parts,
                                                                                                                                                                2}]))),
    <<"ab:">> = iolist_to_binary(join(re:split("ababc","abc",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","abc",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","abc",[{parts,
                                                                                                                                                                            2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","abc",[]))),
    <<"xbc">> = iolist_to_binary(join(re:split("xbc","abc",[trim]))),
    <<"xbc">> = iolist_to_binary(join(re:split("xbc","abc",[{parts,
                                                                                                                                                            2}]))),
    <<"xbc">> = iolist_to_binary(join(re:split("xbc","abc",[]))),
    <<"axc">> = iolist_to_binary(join(re:split("axc","abc",[trim]))),
    <<"axc">> = iolist_to_binary(join(re:split("axc","abc",[{parts,
                                                                                                                                                            2}]))),
    <<"axc">> = iolist_to_binary(join(re:split("axc","abc",[]))),
    <<"abx">> = iolist_to_binary(join(re:split("abx","abc",[trim]))),
    <<"abx">> = iolist_to_binary(join(re:split("abx","abc",[{parts,
                                                                                                                                                            2}]))),
    <<"abx">> = iolist_to_binary(join(re:split("abx","abc",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc","ab*c",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","ab*c",[{parts,
                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","ab*c",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc","ab*bc",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","ab*bc",[{parts,
                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","ab*bc",[]))),
    <<"">> = iolist_to_binary(join(re:split("abbc","ab*bc",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abbc","ab*bc",[{parts,
                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("abbc","ab*bc",[]))),
    <<"">> = iolist_to_binary(join(re:split("abbbbc","ab*bc",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abbbbc","ab*bc",[{parts,
                                                                                                                                                                      2}]))),
    <<":">> = iolist_to_binary(join(re:split("abbbbc","ab*bc",[]))),
    <<"">> = iolist_to_binary(join(re:split("abbbbc",".{1}",[trim]))),
    <<":bbbbc">> = iolist_to_binary(join(re:split("abbbbc",".{1}",[{parts,
                                                                                                                                                                    2}]))),
    <<"::::::">> = iolist_to_binary(join(re:split("abbbbc",".{1}",[]))),
    <<":bc">> = iolist_to_binary(join(re:split("abbbbc",".{3,4}",[trim]))),
    <<":bc">> = iolist_to_binary(join(re:split("abbbbc",".{3,4}",[{parts,
                                                                                                                                                                        2}]))),
    <<":bc">> = iolist_to_binary(join(re:split("abbbbc",".{3,4}",[]))),
    <<"">> = iolist_to_binary(join(re:split("abbbbc","ab{0,}bc",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abbbbc","ab{0,}bc",[{parts,
                                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("abbbbc","ab{0,}bc",[]))),
    <<"">> = iolist_to_binary(join(re:split("abbc","ab+bc",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abbc","ab+bc",[{parts,
                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("abbc","ab+bc",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","ab+bc",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","ab+bc",[{parts,
                                                                                                                                                                                2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","ab+bc",[]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","ab+bc",[trim]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","ab+bc",[{parts,
                                                                                                                                                                2}]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","ab+bc",[]))),
    <<"abq">> = iolist_to_binary(join(re:split("abq","ab+bc",[trim]))),
    <<"abq">> = iolist_to_binary(join(re:split("abq","ab+bc",[{parts,
                                                                                                                                                                2}]))),
    <<"abq">> = iolist_to_binary(join(re:split("abq","ab+bc",[]))),
    ok.
run15() ->
    <<"">> = iolist_to_binary(join(re:split("abbbbc","ab+bc",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abbbbc","ab+bc",[{parts,
                                                                                                                                                                      2}]))),
    <<":">> = iolist_to_binary(join(re:split("abbbbc","ab+bc",[]))),
    <<"">> = iolist_to_binary(join(re:split("abbbbc","ab{1,}bc",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abbbbc","ab{1,}bc",[{parts,
                                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("abbbbc","ab{1,}bc",[]))),
    <<"">> = iolist_to_binary(join(re:split("abbbbc","ab{1,3}bc",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abbbbc","ab{1,3}bc",[{parts,
                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("abbbbc","ab{1,3}bc",[]))),
    <<"">> = iolist_to_binary(join(re:split("abbbbc","ab{3,4}bc",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abbbbc","ab{3,4}bc",[{parts,
                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("abbbbc","ab{3,4}bc",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","ab{4,5}bc",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","ab{4,5}bc",[{parts,
                                                                                                                                                                                        2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","ab{4,5}bc",[]))),
    <<"abq">> = iolist_to_binary(join(re:split("abq","ab{4,5}bc",[trim]))),
    <<"abq">> = iolist_to_binary(join(re:split("abq","ab{4,5}bc",[{parts,
                                                                                                                                                                        2}]))),
    <<"abq">> = iolist_to_binary(join(re:split("abq","ab{4,5}bc",[]))),
    <<"abbbbc">> = iolist_to_binary(join(re:split("abbbbc","ab{4,5}bc",[trim]))),
    <<"abbbbc">> = iolist_to_binary(join(re:split("abbbbc","ab{4,5}bc",[{parts,
                                                                                                                                                                              2}]))),
    <<"abbbbc">> = iolist_to_binary(join(re:split("abbbbc","ab{4,5}bc",[]))),
    <<"">> = iolist_to_binary(join(re:split("abbc","ab?bc",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abbc","ab?bc",[{parts,
                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("abbc","ab?bc",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc","ab?bc",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","ab?bc",[{parts,
                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","ab?bc",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc","ab{0,1}bc",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","ab{0,1}bc",[{parts,
                                                                                                                                                                        2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","ab{0,1}bc",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc","ab?c",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","ab?c",[{parts,
                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","ab?c",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc","ab{0,1}c",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","ab{0,1}c",[{parts,
                                                                                                                                                                      2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","ab{0,1}c",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc","^abc$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","^abc$",[{parts,
                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","^abc$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^abc$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^abc$",[{parts,
                                                                                                                                                                                 2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^abc$",[]))),
    <<"abbbbc">> = iolist_to_binary(join(re:split("abbbbc","^abc$",[trim]))),
    <<"abbbbc">> = iolist_to_binary(join(re:split("abbbbc","^abc$",[{parts,
                                                                                                                                                                       2}]))),
    <<"abbbbc">> = iolist_to_binary(join(re:split("abbbbc","^abc$",[]))),
    <<"abcc">> = iolist_to_binary(join(re:split("abcc","^abc$",[trim]))),
    <<"abcc">> = iolist_to_binary(join(re:split("abcc","^abc$",[{parts,
                                                                                                                                                                   2}]))),
    <<"abcc">> = iolist_to_binary(join(re:split("abcc","^abc$",[]))),
    <<":c">> = iolist_to_binary(join(re:split("abcc","^abc",[trim]))),
    <<":c">> = iolist_to_binary(join(re:split("abcc","^abc",[{parts,
                                                                                                                                                                2}]))),
    <<":c">> = iolist_to_binary(join(re:split("abcc","^abc",[]))),
    <<"a">> = iolist_to_binary(join(re:split("aabc","abc$",[trim]))),
    <<"a:">> = iolist_to_binary(join(re:split("aabc","abc$",[{parts,
                                                                                                                                                                 2}]))),
    <<"a:">> = iolist_to_binary(join(re:split("aabc","abc$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","abc$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","abc$",[{parts,
                                                                                                                                                                               2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","abc$",[]))),
    <<"a">> = iolist_to_binary(join(re:split("aabc","abc$",[trim]))),
    <<"a:">> = iolist_to_binary(join(re:split("aabc","abc$",[{parts,
                                                                                                                                                                 2}]))),
    <<"a:">> = iolist_to_binary(join(re:split("aabc","abc$",[]))),
    <<"aabcd">> = iolist_to_binary(join(re:split("aabcd","abc$",[trim]))),
    <<"aabcd">> = iolist_to_binary(join(re:split("aabcd","abc$",[{parts,
                                                                                                                                                                   2}]))),
    <<"aabcd">> = iolist_to_binary(join(re:split("aabcd","abc$",[]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","^",[trim]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","^",[{parts,
                                                                                                                                                        2}]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","^",[]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","$",[trim]))),
    <<"abc:">> = iolist_to_binary(join(re:split("abc","$",[{parts,
                                                                                                                                                         2}]))),
    <<"abc:">> = iolist_to_binary(join(re:split("abc","$",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc","a.c",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","a.c",[{parts,
                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","a.c",[]))),
    <<"">> = iolist_to_binary(join(re:split("axc","a.c",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("axc","a.c",[{parts,
                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("axc","a.c",[]))),
    <<"">> = iolist_to_binary(join(re:split("axyzc","a.*c",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("axyzc","a.*c",[{parts,
                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("axyzc","a.*c",[]))),
    <<"">> = iolist_to_binary(join(re:split("abd","a[bc]d",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abd","a[bc]d",[{parts,
                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("abd","a[bc]d",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a[bc]d",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a[bc]d",[{parts,
                                                                                                                                                                                  2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a[bc]d",[]))),
    <<"axyzd">> = iolist_to_binary(join(re:split("axyzd","a[bc]d",[trim]))),
    <<"axyzd">> = iolist_to_binary(join(re:split("axyzd","a[bc]d",[{parts,
                                                                                                                                                                      2}]))),
    <<"axyzd">> = iolist_to_binary(join(re:split("axyzd","a[bc]d",[]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","a[bc]d",[trim]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","a[bc]d",[{parts,
                                                                                                                                                                  2}]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","a[bc]d",[]))),
    <<"">> = iolist_to_binary(join(re:split("ace","a[b-d]e",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("ace","a[b-d]e",[{parts,
                                                                                                                                                                    2}]))),
    <<":">> = iolist_to_binary(join(re:split("ace","a[b-d]e",[]))),
    ok.
run16() ->
    <<"a">> = iolist_to_binary(join(re:split("aac","a[b-d]",[trim]))),
    <<"a:">> = iolist_to_binary(join(re:split("aac","a[b-d]",[{parts,
                                                                                                                                                                  2}]))),
    <<"a:">> = iolist_to_binary(join(re:split("aac","a[b-d]",[]))),
    <<"">> = iolist_to_binary(join(re:split("a-","a[-b]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a-","a[-b]",[{parts,
                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("a-","a[-b]",[]))),
    <<"">> = iolist_to_binary(join(re:split("a-","a[b-]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a-","a[b-]",[{parts,
                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("a-","a[b-]",[]))),
    <<"">> = iolist_to_binary(join(re:split("a]","a]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a]","a]",[{parts,
                                                                                                                                                        2}]))),
    <<":">> = iolist_to_binary(join(re:split("a]","a]",[]))),
    <<"">> = iolist_to_binary(join(re:split("a]b","a[]]b",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a]b","a[]]b",[{parts,
                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("a]b","a[]]b",[]))),
    <<"">> = iolist_to_binary(join(re:split("aed","a[^bc]d",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aed","a[^bc]d",[{parts,
                                                                                                                                                                    2}]))),
    <<":">> = iolist_to_binary(join(re:split("aed","a[^bc]d",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a[^bc]d",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a[^bc]d",[{parts,
                                                                                                                                                                                    2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a[^bc]d",[]))),
    <<"abd">> = iolist_to_binary(join(re:split("abd","a[^bc]d",[trim]))),
    <<"abd">> = iolist_to_binary(join(re:split("abd","a[^bc]d",[{parts,
                                                                                                                                                                    2}]))),
    <<"abd">> = iolist_to_binary(join(re:split("abd","a[^bc]d",[]))),
    <<"abd">> = iolist_to_binary(join(re:split("abd","a[^bc]d",[trim]))),
    <<"abd">> = iolist_to_binary(join(re:split("abd","a[^bc]d",[{parts,
                                                                                                                                                                    2}]))),
    <<"abd">> = iolist_to_binary(join(re:split("abd","a[^bc]d",[]))),
    <<"">> = iolist_to_binary(join(re:split("adc","a[^-b]c",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("adc","a[^-b]c",[{parts,
                                                                                                                                                                    2}]))),
    <<":">> = iolist_to_binary(join(re:split("adc","a[^-b]c",[]))),
    <<"">> = iolist_to_binary(join(re:split("adc","a[^]b]c",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("adc","a[^]b]c",[{parts,
                                                                                                                                                                    2}]))),
    <<":">> = iolist_to_binary(join(re:split("adc","a[^]b]c",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a[^]b]c",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a[^]b]c",[{parts,
                                                                                                                                                                                    2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a[^]b]c",[]))),
    <<"">> = iolist_to_binary(join(re:split("a-c","a[^]b]c",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a-c","a[^]b]c",[{parts,
                                                                                                                                                                    2}]))),
    <<":">> = iolist_to_binary(join(re:split("a-c","a[^]b]c",[]))),
    <<"a]c">> = iolist_to_binary(join(re:split("a]c","a[^]b]c",[trim]))),
    <<"a]c">> = iolist_to_binary(join(re:split("a]c","a[^]b]c",[{parts,
                                                                                                                                                                    2}]))),
    <<"a]c">> = iolist_to_binary(join(re:split("a]c","a[^]b]c",[]))),
    <<":-">> = iolist_to_binary(join(re:split("a-","\\ba\\b",[trim]))),
    <<":-">> = iolist_to_binary(join(re:split("a-","\\ba\\b",[{parts,
                                                                                                                                                                    2}]))),
    <<":-">> = iolist_to_binary(join(re:split("a-","\\ba\\b",[]))),
    <<"-">> = iolist_to_binary(join(re:split("-a","\\ba\\b",[trim]))),
    <<"-:">> = iolist_to_binary(join(re:split("-a","\\ba\\b",[{parts,
                                                                                                                                                                    2}]))),
    <<"-:">> = iolist_to_binary(join(re:split("-a","\\ba\\b",[]))),
    <<"-:-">> = iolist_to_binary(join(re:split("-a-","\\ba\\b",[trim]))),
    <<"-:-">> = iolist_to_binary(join(re:split("-a-","\\ba\\b",[{parts,
                                                                                                                                                                      2}]))),
    <<"-:-">> = iolist_to_binary(join(re:split("-a-","\\ba\\b",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\by\\b",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\by\\b",[{parts,
                                                                                                                                                                                      2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\by\\b",[]))),
    <<"xy">> = iolist_to_binary(join(re:split("xy","\\by\\b",[trim]))),
    <<"xy">> = iolist_to_binary(join(re:split("xy","\\by\\b",[{parts,
                                                                                                                                                                    2}]))),
    <<"xy">> = iolist_to_binary(join(re:split("xy","\\by\\b",[]))),
    <<"yz">> = iolist_to_binary(join(re:split("yz","\\by\\b",[trim]))),
    <<"yz">> = iolist_to_binary(join(re:split("yz","\\by\\b",[{parts,
                                                                                                                                                                    2}]))),
    <<"yz">> = iolist_to_binary(join(re:split("yz","\\by\\b",[]))),
    <<"xyz">> = iolist_to_binary(join(re:split("xyz","\\by\\b",[trim]))),
    <<"xyz">> = iolist_to_binary(join(re:split("xyz","\\by\\b",[{parts,
                                                                                                                                                                      2}]))),
    <<"xyz">> = iolist_to_binary(join(re:split("xyz","\\by\\b",[]))),
    <<"*** F:ilers">> = iolist_to_binary(join(re:split("*** Failers","\\Ba\\B",[trim]))),
    <<"*** F:ilers">> = iolist_to_binary(join(re:split("*** Failers","\\Ba\\B",[{parts,
                                                                                                                                                                                      2}]))),
    <<"*** F:ilers">> = iolist_to_binary(join(re:split("*** Failers","\\Ba\\B",[]))),
    <<"a-">> = iolist_to_binary(join(re:split("a-","\\Ba\\B",[trim]))),
    <<"a-">> = iolist_to_binary(join(re:split("a-","\\Ba\\B",[{parts,
                                                                                                                                                                    2}]))),
    <<"a-">> = iolist_to_binary(join(re:split("a-","\\Ba\\B",[]))),
    <<"-a">> = iolist_to_binary(join(re:split("-a","\\Ba\\B",[trim]))),
    <<"-a">> = iolist_to_binary(join(re:split("-a","\\Ba\\B",[{parts,
                                                                                                                                                                    2}]))),
    <<"-a">> = iolist_to_binary(join(re:split("-a","\\Ba\\B",[]))),
    <<"-a-">> = iolist_to_binary(join(re:split("-a-","\\Ba\\B",[trim]))),
    <<"-a-">> = iolist_to_binary(join(re:split("-a-","\\Ba\\B",[{parts,
                                                                                                                                                                      2}]))),
    <<"-a-">> = iolist_to_binary(join(re:split("-a-","\\Ba\\B",[]))),
    <<"x">> = iolist_to_binary(join(re:split("xy","\\By\\b",[trim]))),
    <<"x:">> = iolist_to_binary(join(re:split("xy","\\By\\b",[{parts,
                                                                                                                                                                    2}]))),
    <<"x:">> = iolist_to_binary(join(re:split("xy","\\By\\b",[]))),
    <<":z">> = iolist_to_binary(join(re:split("yz","\\by\\B",[trim]))),
    <<":z">> = iolist_to_binary(join(re:split("yz","\\by\\B",[{parts,
                                                                                                                                                                    2}]))),
    <<":z">> = iolist_to_binary(join(re:split("yz","\\by\\B",[]))),
    <<"x:z">> = iolist_to_binary(join(re:split("xyz","\\By\\B",[trim]))),
    <<"x:z">> = iolist_to_binary(join(re:split("xyz","\\By\\B",[{parts,
                                                                                                                                                                      2}]))),
    <<"x:z">> = iolist_to_binary(join(re:split("xyz","\\By\\B",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a","\\w",[{parts,
                                                                                                                                                         2}]))),
    <<":">> = iolist_to_binary(join(re:split("a","\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("-","\\W",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("-","\\W",[{parts,
                                                                                                                                                         2}]))),
    <<":">> = iolist_to_binary(join(re:split("-","\\W",[]))),
    <<"::::Failers">> = iolist_to_binary(join(re:split("*** Failers","\\W",[trim]))),
    <<":** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\W",[{parts,
                                                                                                                                                                             2}]))),
    <<"::::Failers">> = iolist_to_binary(join(re:split("*** Failers","\\W",[]))),
    <<"">> = iolist_to_binary(join(re:split("-","\\W",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("-","\\W",[{parts,
                                                                                                                                                         2}]))),
    <<":">> = iolist_to_binary(join(re:split("-","\\W",[]))),
    <<"a">> = iolist_to_binary(join(re:split("a","\\W",[trim]))),
    <<"a">> = iolist_to_binary(join(re:split("a","\\W",[{parts,
                                                                                                                                                         2}]))),
    <<"a">> = iolist_to_binary(join(re:split("a","\\W",[]))),
    <<"">> = iolist_to_binary(join(re:split("a b","a\\sb",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a b","a\\sb",[{parts,
                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("a b","a\\sb",[]))),
    <<"">> = iolist_to_binary(join(re:split("a-b","a\\Sb",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a-b","a\\Sb",[{parts,
                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("a-b","a\\Sb",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a\\Sb",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a\\Sb",[{parts,
                                                                                                                                                                                 2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a\\Sb",[]))),
    <<"">> = iolist_to_binary(join(re:split("a-b","a\\Sb",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a-b","a\\Sb",[{parts,
                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("a-b","a\\Sb",[]))),
    <<"a b">> = iolist_to_binary(join(re:split("a b","a\\Sb",[trim]))),
    <<"a b">> = iolist_to_binary(join(re:split("a b","a\\Sb",[{parts,
                                                                                                                                                                 2}]))),
    <<"a b">> = iolist_to_binary(join(re:split("a b","a\\Sb",[]))),
    <<"">> = iolist_to_binary(join(re:split("1","\\d",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("1","\\d",[{parts,
                                                                                                                                                         2}]))),
    <<":">> = iolist_to_binary(join(re:split("1","\\d",[]))),
    <<"">> = iolist_to_binary(join(re:split("-","\\D",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("-","\\D",[{parts,
                                                                                                                                                         2}]))),
    <<":">> = iolist_to_binary(join(re:split("-","\\D",[]))),
    <<"">> = iolist_to_binary(join(re:split("*** Failers","\\D",[trim]))),
    <<":** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\D",[{parts,
                                                                                                                                                                             2}]))),
    <<":::::::::::">> = iolist_to_binary(join(re:split("*** Failers","\\D",[]))),
    <<"">> = iolist_to_binary(join(re:split("-","\\D",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("-","\\D",[{parts,
                                                                                                                                                         2}]))),
    <<":">> = iolist_to_binary(join(re:split("-","\\D",[]))),
    <<"1">> = iolist_to_binary(join(re:split("1","\\D",[trim]))),
    <<"1">> = iolist_to_binary(join(re:split("1","\\D",[{parts,
                                                                                                                                                         2}]))),
    <<"1">> = iolist_to_binary(join(re:split("1","\\D",[]))),
    ok.
run17() ->
    <<"">> = iolist_to_binary(join(re:split("a","[\\w]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a","[\\w]",[{parts,
                                                                                                                                                             2}]))),
    <<":">> = iolist_to_binary(join(re:split("a","[\\w]",[]))),
    <<"">> = iolist_to_binary(join(re:split("-","[\\W]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("-","[\\W]",[{parts,
                                                                                                                                                             2}]))),
    <<":">> = iolist_to_binary(join(re:split("-","[\\W]",[]))),
    <<"::::Failers">> = iolist_to_binary(join(re:split("*** Failers","[\\W]",[trim]))),
    <<":** Failers">> = iolist_to_binary(join(re:split("*** Failers","[\\W]",[{parts,
                                                                                                                                                                                 2}]))),
    <<"::::Failers">> = iolist_to_binary(join(re:split("*** Failers","[\\W]",[]))),
    <<"">> = iolist_to_binary(join(re:split("-","[\\W]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("-","[\\W]",[{parts,
                                                                                                                                                             2}]))),
    <<":">> = iolist_to_binary(join(re:split("-","[\\W]",[]))),
    <<"a">> = iolist_to_binary(join(re:split("a","[\\W]",[trim]))),
    <<"a">> = iolist_to_binary(join(re:split("a","[\\W]",[{parts,
                                                                                                                                                             2}]))),
    <<"a">> = iolist_to_binary(join(re:split("a","[\\W]",[]))),
    <<"">> = iolist_to_binary(join(re:split("a b","a[\\s]b",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a b","a[\\s]b",[{parts,
                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("a b","a[\\s]b",[]))),
    <<"">> = iolist_to_binary(join(re:split("a-b","a[\\S]b",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a-b","a[\\S]b",[{parts,
                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("a-b","a[\\S]b",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a[\\S]b",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a[\\S]b",[{parts,
                                                                                                                                                                                     2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a[\\S]b",[]))),
    <<"">> = iolist_to_binary(join(re:split("a-b","a[\\S]b",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a-b","a[\\S]b",[{parts,
                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("a-b","a[\\S]b",[]))),
    <<"a b">> = iolist_to_binary(join(re:split("a b","a[\\S]b",[trim]))),
    <<"a b">> = iolist_to_binary(join(re:split("a b","a[\\S]b",[{parts,
                                                                                                                                                                     2}]))),
    <<"a b">> = iolist_to_binary(join(re:split("a b","a[\\S]b",[]))),
    <<"">> = iolist_to_binary(join(re:split("1","[\\d]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("1","[\\d]",[{parts,
                                                                                                                                                             2}]))),
    <<":">> = iolist_to_binary(join(re:split("1","[\\d]",[]))),
    <<"">> = iolist_to_binary(join(re:split("-","[\\D]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("-","[\\D]",[{parts,
                                                                                                                                                             2}]))),
    <<":">> = iolist_to_binary(join(re:split("-","[\\D]",[]))),
    <<"">> = iolist_to_binary(join(re:split("*** Failers","[\\D]",[trim]))),
    <<":** Failers">> = iolist_to_binary(join(re:split("*** Failers","[\\D]",[{parts,
                                                                                                                                                                                 2}]))),
    <<":::::::::::">> = iolist_to_binary(join(re:split("*** Failers","[\\D]",[]))),
    <<"">> = iolist_to_binary(join(re:split("-","[\\D]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("-","[\\D]",[{parts,
                                                                                                                                                             2}]))),
    <<":">> = iolist_to_binary(join(re:split("-","[\\D]",[]))),
    <<"1">> = iolist_to_binary(join(re:split("1","[\\D]",[trim]))),
    <<"1">> = iolist_to_binary(join(re:split("1","[\\D]",[{parts,
                                                                                                                                                             2}]))),
    <<"1">> = iolist_to_binary(join(re:split("1","[\\D]",[]))),
    <<":c">> = iolist_to_binary(join(re:split("abc","ab|cd",[trim]))),
    <<":c">> = iolist_to_binary(join(re:split("abc","ab|cd",[{parts,
                                                                                                                                                                2}]))),
    <<":c">> = iolist_to_binary(join(re:split("abc","ab|cd",[]))),
    <<"">> = iolist_to_binary(join(re:split("abcd","ab|cd",[trim]))),
    <<":cd">> = iolist_to_binary(join(re:split("abcd","ab|cd",[{parts,
                                                                                                                                                                  2}]))),
    <<"::">> = iolist_to_binary(join(re:split("abcd","ab|cd",[]))),
    <<"d">> = iolist_to_binary(join(re:split("def","()ef",[trim]))),
    <<"d::">> = iolist_to_binary(join(re:split("def","()ef",[{parts,
                                                                                                                                                              2}]))),
    <<"d::">> = iolist_to_binary(join(re:split("def","()ef",[]))),
    <<"">> = iolist_to_binary(join(re:split("a(b","a\\(b",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a(b","a\\(b",[{parts,
                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("a(b","a\\(b",[]))),
    <<"">> = iolist_to_binary(join(re:split("ab","a\\(*b",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("ab","a\\(*b",[{parts,
                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("ab","a\\(*b",[]))),
    <<"">> = iolist_to_binary(join(re:split("a((b","a\\(*b",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a((b","a\\(*b",[{parts,
                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("a((b","a\\(*b",[]))),
    <<"a">> = iolist_to_binary(join(re:split("a","a\\\\b",[trim]))),
    <<"a">> = iolist_to_binary(join(re:split("a","a\\\\b",[{parts,
                                                                                                                                                                  2}]))),
    <<"a">> = iolist_to_binary(join(re:split("a","a\\\\b",[]))),
    <<":a:a:bc">> = iolist_to_binary(join(re:split("abc","((a))",[trim]))),
    <<":a:a:bc">> = iolist_to_binary(join(re:split("abc","((a))",[{parts,
                                                                                                                                                                2}]))),
    <<":a:a:bc">> = iolist_to_binary(join(re:split("abc","((a))",[]))),
    <<":a:c">> = iolist_to_binary(join(re:split("abc","(a)b(c)",[trim]))),
    <<":a:c:">> = iolist_to_binary(join(re:split("abc","(a)b(c)",[{parts,
                                                                                                                                                                    2}]))),
    <<":a:c:">> = iolist_to_binary(join(re:split("abc","(a)b(c)",[]))),
    <<"aabb">> = iolist_to_binary(join(re:split("aabbabc","a+b+c",[trim]))),
    <<"aabb:">> = iolist_to_binary(join(re:split("aabbabc","a+b+c",[{parts,
                                                                                                                                                                        2}]))),
    <<"aabb:">> = iolist_to_binary(join(re:split("aabbabc","a+b+c",[]))),
    <<"aabb">> = iolist_to_binary(join(re:split("aabbabc","a{1,}b{1,}c",[trim]))),
    <<"aabb:">> = iolist_to_binary(join(re:split("aabbabc","a{1,}b{1,}c",[{parts,
                                                                                                                                                                                    2}]))),
    <<"aabb:">> = iolist_to_binary(join(re:split("aabbabc","a{1,}b{1,}c",[]))),
    <<"">> = iolist_to_binary(join(re:split("abcabc","a.+?c",[trim]))),
    <<":abc">> = iolist_to_binary(join(re:split("abcabc","a.+?c",[{parts,
                                                                                                                                                                      2}]))),
    <<"::">> = iolist_to_binary(join(re:split("abcabc","a.+?c",[]))),
    <<":b">> = iolist_to_binary(join(re:split("ab","(a+|b)*",[trim]))),
    <<":b:">> = iolist_to_binary(join(re:split("ab","(a+|b)*",[{parts,
                                                                                                                                                                  2}]))),
    <<":b:">> = iolist_to_binary(join(re:split("ab","(a+|b)*",[]))),
    <<":b">> = iolist_to_binary(join(re:split("ab","(a+|b){0,}",[trim]))),
    <<":b:">> = iolist_to_binary(join(re:split("ab","(a+|b){0,}",[{parts,
                                                                                                                                                                        2}]))),
    <<":b:">> = iolist_to_binary(join(re:split("ab","(a+|b){0,}",[]))),
    <<":b">> = iolist_to_binary(join(re:split("ab","(a+|b)+",[trim]))),
    <<":b:">> = iolist_to_binary(join(re:split("ab","(a+|b)+",[{parts,
                                                                                                                                                                  2}]))),
    <<":b:">> = iolist_to_binary(join(re:split("ab","(a+|b)+",[]))),
    ok.
run18() ->
    <<":b">> = iolist_to_binary(join(re:split("ab","(a+|b){1,}",[trim]))),
    <<":b:">> = iolist_to_binary(join(re:split("ab","(a+|b){1,}",[{parts,
                                                                                                                                                                        2}]))),
    <<":b:">> = iolist_to_binary(join(re:split("ab","(a+|b){1,}",[]))),
    <<":a::b">> = iolist_to_binary(join(re:split("ab","(a+|b)?",[trim]))),
    <<":a:b">> = iolist_to_binary(join(re:split("ab","(a+|b)?",[{parts,
                                                                                                                                                                  2}]))),
    <<":a::b:">> = iolist_to_binary(join(re:split("ab","(a+|b)?",[]))),
    <<":a::b">> = iolist_to_binary(join(re:split("ab","(a+|b){0,1}",[trim]))),
    <<":a:b">> = iolist_to_binary(join(re:split("ab","(a+|b){0,1}",[{parts,
                                                                                                                                                                          2}]))),
    <<":a::b:">> = iolist_to_binary(join(re:split("ab","(a+|b){0,1}",[]))),
    <<"">> = iolist_to_binary(join(re:split("cde","[^ab]*",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("cde","[^ab]*",[{parts,
                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("cde","[^ab]*",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","abc",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","abc",[{parts,
                                                                                                                                                                            2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","abc",[]))),
    <<"b">> = iolist_to_binary(join(re:split("b","abc",[trim]))),
    <<"b">> = iolist_to_binary(join(re:split("b","abc",[{parts,
                                                                                                                                                        2}]))),
    <<"b">> = iolist_to_binary(join(re:split("b","abc",[]))),
    <<":c">> = iolist_to_binary(join(re:split("abbbcd","([abc])*d",[trim]))),
    <<":c:">> = iolist_to_binary(join(re:split("abbbcd","([abc])*d",[{parts,
                                                                                                                                                                              2}]))),
    <<":c:">> = iolist_to_binary(join(re:split("abbbcd","([abc])*d",[]))),
    <<":a">> = iolist_to_binary(join(re:split("abcd","([abc])*bcd",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("abcd","([abc])*bcd",[{parts,
                                                                                                                                                                              2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("abcd","([abc])*bcd",[]))),
    <<"">> = iolist_to_binary(join(re:split("e","a|b|c|d|e",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("e","a|b|c|d|e",[{parts,
                                                                                                                                                                    2}]))),
    <<":">> = iolist_to_binary(join(re:split("e","a|b|c|d|e",[]))),
    <<":e">> = iolist_to_binary(join(re:split("ef","(a|b|c|d|e)f",[trim]))),
    <<":e:">> = iolist_to_binary(join(re:split("ef","(a|b|c|d|e)f",[{parts,
                                                                                                                                                                            2}]))),
    <<":e:">> = iolist_to_binary(join(re:split("ef","(a|b|c|d|e)f",[]))),
    <<"">> = iolist_to_binary(join(re:split("abcdefg","abcd*efg",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abcdefg","abcd*efg",[{parts,
                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("abcdefg","abcd*efg",[]))),
    <<"x:y:z">> = iolist_to_binary(join(re:split("xabyabbbz","ab*",[trim]))),
    <<"x:yabbbz">> = iolist_to_binary(join(re:split("xabyabbbz","ab*",[{parts,
                                                                                                                                                                        2}]))),
    <<"x:y:z">> = iolist_to_binary(join(re:split("xabyabbbz","ab*",[]))),
    <<"x:y:z">> = iolist_to_binary(join(re:split("xayabbbz","ab*",[trim]))),
    <<"x:yabbbz">> = iolist_to_binary(join(re:split("xayabbbz","ab*",[{parts,
                                                                                                                                                                      2}]))),
    <<"x:y:z">> = iolist_to_binary(join(re:split("xayabbbz","ab*",[]))),
    <<"ab:cd">> = iolist_to_binary(join(re:split("abcde","(ab|cd)e",[trim]))),
    <<"ab:cd:">> = iolist_to_binary(join(re:split("abcde","(ab|cd)e",[{parts,
                                                                                                                                                                          2}]))),
    <<"ab:cd:">> = iolist_to_binary(join(re:split("abcde","(ab|cd)e",[]))),
    <<"">> = iolist_to_binary(join(re:split("hij","[abhgefdc]ij",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("hij","[abhgefdc]ij",[{parts,
                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("hij","[abhgefdc]ij",[]))),
    <<"abcd">> = iolist_to_binary(join(re:split("abcdef","(abc|)ef",[trim]))),
    <<"abcd::">> = iolist_to_binary(join(re:split("abcdef","(abc|)ef",[{parts,
                                                                                                                                                                            2}]))),
    <<"abcd::">> = iolist_to_binary(join(re:split("abcdef","(abc|)ef",[]))),
    <<"a:b">> = iolist_to_binary(join(re:split("abcd","(a|b)c*d",[trim]))),
    <<"a:b:">> = iolist_to_binary(join(re:split("abcd","(a|b)c*d",[{parts,
                                                                                                                                                                        2}]))),
    <<"a:b:">> = iolist_to_binary(join(re:split("abcd","(a|b)c*d",[]))),
    <<":a">> = iolist_to_binary(join(re:split("abc","(ab|ab*)bc",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("abc","(ab|ab*)bc",[{parts,
                                                                                                                                                                          2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("abc","(ab|ab*)bc",[]))),
    <<":bc">> = iolist_to_binary(join(re:split("abc","a([bc]*)c*",[trim]))),
    <<":bc:">> = iolist_to_binary(join(re:split("abc","a([bc]*)c*",[{parts,
                                                                                                                                                                          2}]))),
    <<":bc:">> = iolist_to_binary(join(re:split("abc","a([bc]*)c*",[]))),
    <<":bc:d">> = iolist_to_binary(join(re:split("abcd","a([bc]*)(c*d)",[trim]))),
    <<":bc:d:">> = iolist_to_binary(join(re:split("abcd","a([bc]*)(c*d)",[{parts,
                                                                                                                                                                                  2}]))),
    <<":bc:d:">> = iolist_to_binary(join(re:split("abcd","a([bc]*)(c*d)",[]))),
    ok.
run19() ->
    <<":bc:d">> = iolist_to_binary(join(re:split("abcd","a([bc]+)(c*d)",[trim]))),
    <<":bc:d:">> = iolist_to_binary(join(re:split("abcd","a([bc]+)(c*d)",[{parts,
                                                                                                                                                                                  2}]))),
    <<":bc:d:">> = iolist_to_binary(join(re:split("abcd","a([bc]+)(c*d)",[]))),
    <<":b:cd">> = iolist_to_binary(join(re:split("abcd","a([bc]*)(c+d)",[trim]))),
    <<":b:cd:">> = iolist_to_binary(join(re:split("abcd","a([bc]*)(c+d)",[{parts,
                                                                                                                                                                                  2}]))),
    <<":b:cd:">> = iolist_to_binary(join(re:split("abcd","a([bc]*)(c+d)",[]))),
    <<"">> = iolist_to_binary(join(re:split("adcdcde","a[bcd]*dcdcde",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("adcdcde","a[bcd]*dcdcde",[{parts,
                                                                                                                                                                                        2}]))),
    <<":">> = iolist_to_binary(join(re:split("adcdcde","a[bcd]*dcdcde",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a[bcd]+dcdcde",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a[bcd]+dcdcde",[{parts,
                                                                                                                                                                                                2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a[bcd]+dcdcde",[]))),
    <<"abcde">> = iolist_to_binary(join(re:split("abcde","a[bcd]+dcdcde",[trim]))),
    <<"abcde">> = iolist_to_binary(join(re:split("abcde","a[bcd]+dcdcde",[{parts,
                                                                                                                                                                                    2}]))),
    <<"abcde">> = iolist_to_binary(join(re:split("abcde","a[bcd]+dcdcde",[]))),
    <<"adcdcde">> = iolist_to_binary(join(re:split("adcdcde","a[bcd]+dcdcde",[trim]))),
    <<"adcdcde">> = iolist_to_binary(join(re:split("adcdcde","a[bcd]+dcdcde",[{parts,
                                                                                                                                                                                        2}]))),
    <<"adcdcde">> = iolist_to_binary(join(re:split("adcdcde","a[bcd]+dcdcde",[]))),
    <<":ab">> = iolist_to_binary(join(re:split("abc","(ab|a)b*c",[trim]))),
    <<":ab:">> = iolist_to_binary(join(re:split("abc","(ab|a)b*c",[{parts,
                                                                                                                                                                        2}]))),
    <<":ab:">> = iolist_to_binary(join(re:split("abc","(ab|a)b*c",[]))),
    <<":abc:a:b:d">> = iolist_to_binary(join(re:split("abcd","((a)(b)c)(d)",[trim]))),
    <<":abc:a:b:d:">> = iolist_to_binary(join(re:split("abcd","((a)(b)c)(d)",[{parts,
                                                                                                                                                                                2}]))),
    <<":abc:a:b:d:">> = iolist_to_binary(join(re:split("abcd","((a)(b)c)(d)",[]))),
    <<"">> = iolist_to_binary(join(re:split("alpha","[a-zA-Z_][a-zA-Z0-9_]*",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("alpha","[a-zA-Z_][a-zA-Z0-9_]*",[{parts,
                                                                                                                                                                                                      2}]))),
    <<":">> = iolist_to_binary(join(re:split("alpha","[a-zA-Z_][a-zA-Z0-9_]*",[]))),
    <<"a">> = iolist_to_binary(join(re:split("abh","^a(bc+|b[eh])g|.h$",[trim]))),
    <<"a::">> = iolist_to_binary(join(re:split("abh","^a(bc+|b[eh])g|.h$",[{parts,
                                                                                                                                                                                           2}]))),
    <<"a::">> = iolist_to_binary(join(re:split("abh","^a(bc+|b[eh])g|.h$",[]))),
    <<":effgz">> = iolist_to_binary(join(re:split("effgz","(bc+d$|ef*g.|h?i(j|k))",[trim]))),
    <<":effgz::">> = iolist_to_binary(join(re:split("effgz","(bc+d$|ef*g.|h?i(j|k))",[{parts,
                                                                                                                                                                                                       2}]))),
    <<":effgz::">> = iolist_to_binary(join(re:split("effgz","(bc+d$|ef*g.|h?i(j|k))",[]))),
    <<":ij:j">> = iolist_to_binary(join(re:split("ij","(bc+d$|ef*g.|h?i(j|k))",[trim]))),
    <<":ij:j:">> = iolist_to_binary(join(re:split("ij","(bc+d$|ef*g.|h?i(j|k))",[{parts,
                                                                                                                                                                                                 2}]))),
    <<":ij:j:">> = iolist_to_binary(join(re:split("ij","(bc+d$|ef*g.|h?i(j|k))",[]))),
    <<"r:effgz">> = iolist_to_binary(join(re:split("reffgz","(bc+d$|ef*g.|h?i(j|k))",[trim]))),
    <<"r:effgz::">> = iolist_to_binary(join(re:split("reffgz","(bc+d$|ef*g.|h?i(j|k))",[{parts,
                                                                                                                                                                                                         2}]))),
    <<"r:effgz::">> = iolist_to_binary(join(re:split("reffgz","(bc+d$|ef*g.|h?i(j|k))",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(bc+d$|ef*g.|h?i(j|k))",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(bc+d$|ef*g.|h?i(j|k))",[{parts,
                                                                                                                                                                                                                   2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(bc+d$|ef*g.|h?i(j|k))",[]))),
    <<"effg">> = iolist_to_binary(join(re:split("effg","(bc+d$|ef*g.|h?i(j|k))",[trim]))),
    <<"effg">> = iolist_to_binary(join(re:split("effg","(bc+d$|ef*g.|h?i(j|k))",[{parts,
                                                                                                                                                                                                     2}]))),
    <<"effg">> = iolist_to_binary(join(re:split("effg","(bc+d$|ef*g.|h?i(j|k))",[]))),
    <<"bcdd">> = iolist_to_binary(join(re:split("bcdd","(bc+d$|ef*g.|h?i(j|k))",[trim]))),
    <<"bcdd">> = iolist_to_binary(join(re:split("bcdd","(bc+d$|ef*g.|h?i(j|k))",[{parts,
                                                                                                                                                                                                     2}]))),
    <<"bcdd">> = iolist_to_binary(join(re:split("bcdd","(bc+d$|ef*g.|h?i(j|k))",[]))),
    <<":a:a:a:a:a:a:a:a:a:a">> = iolist_to_binary(join(re:split("a","((((((((((a))))))))))",[trim]))),
    <<":a:a:a:a:a:a:a:a:a:a:">> = iolist_to_binary(join(re:split("a","((((((((((a))))))))))",[{parts,
                                                                                                                                                                                            2}]))),
    <<":a:a:a:a:a:a:a:a:a:a:">> = iolist_to_binary(join(re:split("a","((((((((((a))))))))))",[]))),
    <<":a:a:a:a:a:a:a:a:a:a">> = iolist_to_binary(join(re:split("aa","((((((((((a))))))))))\\10",[trim]))),
    <<":a:a:a:a:a:a:a:a:a:a:">> = iolist_to_binary(join(re:split("aa","((((((((((a))))))))))\\10",[{parts,
                                                                                                                                                                                                       2}]))),
    <<":a:a:a:a:a:a:a:a:a:a:">> = iolist_to_binary(join(re:split("aa","((((((((((a))))))))))\\10",[]))),
    <<":a:a:a:a:a:a:a:a:a">> = iolist_to_binary(join(re:split("a","(((((((((a)))))))))",[trim]))),
    <<":a:a:a:a:a:a:a:a:a:">> = iolist_to_binary(join(re:split("a","(((((((((a)))))))))",[{parts,
                                                                                                                                                                                        2}]))),
    <<":a:a:a:a:a:a:a:a:a:">> = iolist_to_binary(join(re:split("a","(((((((((a)))))))))",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","multiple words of text",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","multiple words of text",[{parts,
                                                                                                                                                                                                                  2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","multiple words of text",[]))),
    <<"aa">> = iolist_to_binary(join(re:split("aa","multiple words of text",[trim]))),
    <<"aa">> = iolist_to_binary(join(re:split("aa","multiple words of text",[{parts,
                                                                                                                                                                                                2}]))),
    <<"aa">> = iolist_to_binary(join(re:split("aa","multiple words of text",[]))),
    <<"uh-uh">> = iolist_to_binary(join(re:split("uh-uh","multiple words of text",[trim]))),
    <<"uh-uh">> = iolist_to_binary(join(re:split("uh-uh","multiple words of text",[{parts,
                                                                                                                                                                                                      2}]))),
    <<"uh-uh">> = iolist_to_binary(join(re:split("uh-uh","multiple words of text",[]))),
    <<":, yeah">> = iolist_to_binary(join(re:split("multiple words, yeah","multiple words",[trim]))),
    <<":, yeah">> = iolist_to_binary(join(re:split("multiple words, yeah","multiple words",[{parts,
                                                                                                                                                                                                                    2}]))),
    <<":, yeah">> = iolist_to_binary(join(re:split("multiple words, yeah","multiple words",[]))),
    <<":ab:de">> = iolist_to_binary(join(re:split("abcde","(.*)c(.*)",[trim]))),
    <<":ab:de:">> = iolist_to_binary(join(re:split("abcde","(.*)c(.*)",[{parts,
                                                                                                                                                                            2}]))),
    <<":ab:de:">> = iolist_to_binary(join(re:split("abcde","(.*)c(.*)",[]))),
    <<":a:b">> = iolist_to_binary(join(re:split("(a, b)","\\((.*), (.*)\\)",[trim]))),
    <<":a:b:">> = iolist_to_binary(join(re:split("(a, b)","\\((.*), (.*)\\)",[{parts,
                                                                                                                                                                                              2}]))),
    <<":a:b:">> = iolist_to_binary(join(re:split("(a, b)","\\((.*), (.*)\\)",[]))),
    <<"">> = iolist_to_binary(join(re:split("abcd","abcd",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abcd","abcd",[{parts,
                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("abcd","abcd",[]))),
    <<":bc">> = iolist_to_binary(join(re:split("abcd","a(bc)d",[trim]))),
    <<":bc:">> = iolist_to_binary(join(re:split("abcd","a(bc)d",[{parts,
                                                                                                                                                                    2}]))),
    <<":bc:">> = iolist_to_binary(join(re:split("abcd","a(bc)d",[]))),
    <<"">> = iolist_to_binary(join(re:split("ac","a[-]?c",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("ac","a[-]?c",[{parts,
                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("ac","a[-]?c",[]))),
    ok.
run20() ->
    <<":abc">> = iolist_to_binary(join(re:split("abcabc","(abc)\\1",[trim]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abcabc","(abc)\\1",[{parts,
                                                                                                                                                                             2}]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abcabc","(abc)\\1",[]))),
    <<":abc">> = iolist_to_binary(join(re:split("abcabc","([a-c]*)\\1",[trim]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abcabc","([a-c]*)\\1",[{parts,
                                                                                                                                                                                   2}]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abcabc","([a-c]*)\\1",[]))),
    <<":a">> = iolist_to_binary(join(re:split("a","(a)|\\1",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("a","(a)|\\1",[{parts,
                                                                                                                                                                 2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("a","(a)|\\1",[]))),
    <<"*** F:a:ilers">> = iolist_to_binary(join(re:split("*** Failers","(a)|\\1",[trim]))),
    <<"*** F:a:ilers">> = iolist_to_binary(join(re:split("*** Failers","(a)|\\1",[{parts,
                                                                                                                                                                                     2}]))),
    <<"*** F:a:ilers">> = iolist_to_binary(join(re:split("*** Failers","(a)|\\1",[]))),
    <<":a:b">> = iolist_to_binary(join(re:split("ab","(a)|\\1",[trim]))),
    <<":a:b">> = iolist_to_binary(join(re:split("ab","(a)|\\1",[{parts,
                                                                                                                                                                   2}]))),
    <<":a:b">> = iolist_to_binary(join(re:split("ab","(a)|\\1",[]))),
    <<"x">> = iolist_to_binary(join(re:split("x","(a)|\\1",[trim]))),
    <<"x">> = iolist_to_binary(join(re:split("x","(a)|\\1",[{parts,
                                                                                                                                                                 2}]))),
    <<"x">> = iolist_to_binary(join(re:split("x","(a)|\\1",[]))),
    <<":bb:b:b:cbc:c">> = iolist_to_binary(join(re:split("ababbbcbc","(([a-c])b*?\\2)*",[trim]))),
    <<":bb:b:bcbc">> = iolist_to_binary(join(re:split("ababbbcbc","(([a-c])b*?\\2)*",[{parts,
                                                                                                                                                                                                   2}]))),
    <<":bb:b:b:cbc:c:">> = iolist_to_binary(join(re:split("ababbbcbc","(([a-c])b*?\\2)*",[]))),
    <<":cbc:c">> = iolist_to_binary(join(re:split("ababbbcbc","(([a-c])b*?\\2){3}",[trim]))),
    <<":cbc:c:">> = iolist_to_binary(join(re:split("ababbbcbc","(([a-c])b*?\\2){3}",[{parts,
                                                                                                                                                                                                       2}]))),
    <<":cbc:c:">> = iolist_to_binary(join(re:split("ababbbcbc","(([a-c])b*?\\2){3}",[]))),
    <<"aaaxabaxbaax:bbax:b:a">> = iolist_to_binary(join(re:split("aaaxabaxbaaxbbax","((\\3|b)\\2(a)x)+",[trim]))),
    <<"aaaxabaxbaax:bbax:b:a:">> = iolist_to_binary(join(re:split("aaaxabaxbaaxbbax","((\\3|b)\\2(a)x)+",[{parts,
                                                                                                                                                                                                                    2}]))),
    <<"aaaxabaxbaax:bbax:b:a:">> = iolist_to_binary(join(re:split("aaaxabaxbaaxbbax","((\\3|b)\\2(a)x)+",[]))),
    <<"bbaababbabaaaaa:bba:b:a">> = iolist_to_binary(join(re:split("bbaababbabaaaaabbaaaabba","((\\3|b)\\2(a)){2,}",[trim]))),
    <<"bbaababbabaaaaa:bba:b:a:">> = iolist_to_binary(join(re:split("bbaababbabaaaaabbaaaabba","((\\3|b)\\2(a)){2,}",[{parts,
                                                                                                                                                                                                                                        2}]))),
    <<"bbaababbabaaaaa:bba:b:a:">> = iolist_to_binary(join(re:split("bbaababbabaaaaabbaaaabba","((\\3|b)\\2(a)){2,}",[]))),
    <<"">> = iolist_to_binary(join(re:split("ABC","abc",[caseless,
                                                                                                                                                          trim]))),
    <<":">> = iolist_to_binary(join(re:split("ABC","abc",[caseless,
                                                                                                                                                            {parts,
                                                                                                                                                             2}]))),
    <<":">> = iolist_to_binary(join(re:split("ABC","abc",[caseless]))),
    <<"X:Y">> = iolist_to_binary(join(re:split("XABCY","abc",[caseless,
                                                                                                                                                              trim]))),
    <<"X:Y">> = iolist_to_binary(join(re:split("XABCY","abc",[caseless,
                                                                                                                                                                {parts,
                                                                                                                                                                 2}]))),
    <<"X:Y">> = iolist_to_binary(join(re:split("XABCY","abc",[caseless]))),
    <<"AB">> = iolist_to_binary(join(re:split("ABABC","abc",[caseless,
                                                                                                                                                              trim]))),
    <<"AB:">> = iolist_to_binary(join(re:split("ABABC","abc",[caseless,
                                                                                                                                                                {parts,
                                                                                                                                                                 2}]))),
    <<"AB:">> = iolist_to_binary(join(re:split("ABABC","abc",[caseless]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","abc",[caseless,
                                                                                                                                                                          trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","abc",[caseless,
                                                                                                                                                                            {parts,
                                                                                                                                                                             2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","abc",[caseless]))),
    <<"aaxabxbaxbbx">> = iolist_to_binary(join(re:split("aaxabxbaxbbx","abc",[caseless,
                                                                                                                                                                            trim]))),
    <<"aaxabxbaxbbx">> = iolist_to_binary(join(re:split("aaxabxbaxbbx","abc",[caseless,
                                                                                                                                                                              {parts,
                                                                                                                                                                               2}]))),
    <<"aaxabxbaxbbx">> = iolist_to_binary(join(re:split("aaxabxbaxbbx","abc",[caseless]))),
    <<"XBC">> = iolist_to_binary(join(re:split("XBC","abc",[caseless,
                                                                                                                                                          trim]))),
    <<"XBC">> = iolist_to_binary(join(re:split("XBC","abc",[caseless,
                                                                                                                                                            {parts,
                                                                                                                                                             2}]))),
    <<"XBC">> = iolist_to_binary(join(re:split("XBC","abc",[caseless]))),
    <<"AXC">> = iolist_to_binary(join(re:split("AXC","abc",[caseless,
                                                                                                                                                          trim]))),
    <<"AXC">> = iolist_to_binary(join(re:split("AXC","abc",[caseless,
                                                                                                                                                            {parts,
                                                                                                                                                             2}]))),
    <<"AXC">> = iolist_to_binary(join(re:split("AXC","abc",[caseless]))),
    <<"ABX">> = iolist_to_binary(join(re:split("ABX","abc",[caseless,
                                                                                                                                                          trim]))),
    <<"ABX">> = iolist_to_binary(join(re:split("ABX","abc",[caseless,
                                                                                                                                                            {parts,
                                                                                                                                                             2}]))),
    <<"ABX">> = iolist_to_binary(join(re:split("ABX","abc",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ABC","ab*c",[caseless,
                                                                                                                                                            trim]))),
    <<":">> = iolist_to_binary(join(re:split("ABC","ab*c",[caseless,
                                                                                                                                                              {parts,
                                                                                                                                                               2}]))),
    <<":">> = iolist_to_binary(join(re:split("ABC","ab*c",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ABC","ab*bc",[caseless,
                                                                                                                                                              trim]))),
    <<":">> = iolist_to_binary(join(re:split("ABC","ab*bc",[caseless,
                                                                                                                                                                {parts,
                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("ABC","ab*bc",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ABBC","ab*bc",[caseless,
                                                                                                                                                                trim]))),
    <<":">> = iolist_to_binary(join(re:split("ABBC","ab*bc",[caseless,
                                                                                                                                                                  {parts,
                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("ABBC","ab*bc",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ABBBBC","ab*?bc",[caseless,
                                                                                                                                                                      trim]))),
    <<":">> = iolist_to_binary(join(re:split("ABBBBC","ab*?bc",[caseless,
                                                                                                                                                                        {parts,
                                                                                                                                                                         2}]))),
    <<":">> = iolist_to_binary(join(re:split("ABBBBC","ab*?bc",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ABBBBC","ab{0,}?bc",[caseless,
                                                                                                                                                                            trim]))),
    <<":">> = iolist_to_binary(join(re:split("ABBBBC","ab{0,}?bc",[caseless,
                                                                                                                                                                              {parts,
                                                                                                                                                                               2}]))),
    <<":">> = iolist_to_binary(join(re:split("ABBBBC","ab{0,}?bc",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ABBC","ab+?bc",[caseless,
                                                                                                                                                                  trim]))),
    <<":">> = iolist_to_binary(join(re:split("ABBC","ab+?bc",[caseless,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("ABBC","ab+?bc",[caseless]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","ab+bc",[caseless,
                                                                                                                                                                              trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","ab+bc",[caseless,
                                                                                                                                                                                {parts,
                                                                                                                                                                                 2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","ab+bc",[caseless]))),
    <<"ABC">> = iolist_to_binary(join(re:split("ABC","ab+bc",[caseless,
                                                                                                                                                              trim]))),
    <<"ABC">> = iolist_to_binary(join(re:split("ABC","ab+bc",[caseless,
                                                                                                                                                                {parts,
                                                                                                                                                                 2}]))),
    <<"ABC">> = iolist_to_binary(join(re:split("ABC","ab+bc",[caseless]))),
    <<"ABQ">> = iolist_to_binary(join(re:split("ABQ","ab+bc",[caseless,
                                                                                                                                                              trim]))),
    <<"ABQ">> = iolist_to_binary(join(re:split("ABQ","ab+bc",[caseless,
                                                                                                                                                                {parts,
                                                                                                                                                                 2}]))),
    <<"ABQ">> = iolist_to_binary(join(re:split("ABQ","ab+bc",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ABBBBC","ab+bc",[caseless,
                                                                                                                                                                    trim]))),
    <<":">> = iolist_to_binary(join(re:split("ABBBBC","ab+bc",[caseless,
                                                                                                                                                                      {parts,
                                                                                                                                                                       2}]))),
    <<":">> = iolist_to_binary(join(re:split("ABBBBC","ab+bc",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ABBBBC","ab{1,}?bc",[caseless,
                                                                                                                                                                            trim]))),
    <<":">> = iolist_to_binary(join(re:split("ABBBBC","ab{1,}?bc",[caseless,
                                                                                                                                                                              {parts,
                                                                                                                                                                               2}]))),
    <<":">> = iolist_to_binary(join(re:split("ABBBBC","ab{1,}?bc",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ABBBBC","ab{1,3}?bc",[caseless,
                                                                                                                                                                              trim]))),
    <<":">> = iolist_to_binary(join(re:split("ABBBBC","ab{1,3}?bc",[caseless,
                                                                                                                                                                                {parts,
                                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("ABBBBC","ab{1,3}?bc",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ABBBBC","ab{3,4}?bc",[caseless,
                                                                                                                                                                              trim]))),
    <<":">> = iolist_to_binary(join(re:split("ABBBBC","ab{3,4}?bc",[caseless,
                                                                                                                                                                                {parts,
                                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("ABBBBC","ab{3,4}?bc",[caseless]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","ab{4,5}?bc",[caseless,
                                                                                                                                                                                        trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","ab{4,5}?bc",[caseless,
                                                                                                                                                                                          {parts,
                                                                                                                                                                                           2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","ab{4,5}?bc",[caseless]))),
    <<"ABQ">> = iolist_to_binary(join(re:split("ABQ","ab{4,5}?bc",[caseless,
                                                                                                                                                                        trim]))),
    <<"ABQ">> = iolist_to_binary(join(re:split("ABQ","ab{4,5}?bc",[caseless,
                                                                                                                                                                          {parts,
                                                                                                                                                                           2}]))),
    <<"ABQ">> = iolist_to_binary(join(re:split("ABQ","ab{4,5}?bc",[caseless]))),
    <<"ABBBBC">> = iolist_to_binary(join(re:split("ABBBBC","ab{4,5}?bc",[caseless,
                                                                                                                                                                              trim]))),
    <<"ABBBBC">> = iolist_to_binary(join(re:split("ABBBBC","ab{4,5}?bc",[caseless,
                                                                                                                                                                                {parts,
                                                                                                                                                                                 2}]))),
    <<"ABBBBC">> = iolist_to_binary(join(re:split("ABBBBC","ab{4,5}?bc",[caseless]))),
    ok.
run21() ->
    <<"">> = iolist_to_binary(join(re:split("ABBC","ab??bc",[caseless,
                                                                                                                                                                  trim]))),
    <<":">> = iolist_to_binary(join(re:split("ABBC","ab??bc",[caseless,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("ABBC","ab??bc",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ABC","ab??bc",[caseless,
                                                                                                                                                                trim]))),
    <<":">> = iolist_to_binary(join(re:split("ABC","ab??bc",[caseless,
                                                                                                                                                                  {parts,
                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("ABC","ab??bc",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ABC","ab{0,1}?bc",[caseless,
                                                                                                                                                                        trim]))),
    <<":">> = iolist_to_binary(join(re:split("ABC","ab{0,1}?bc",[caseless,
                                                                                                                                                                          {parts,
                                                                                                                                                                           2}]))),
    <<":">> = iolist_to_binary(join(re:split("ABC","ab{0,1}?bc",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ABC","ab??c",[caseless,
                                                                                                                                                              trim]))),
    <<":">> = iolist_to_binary(join(re:split("ABC","ab??c",[caseless,
                                                                                                                                                                {parts,
                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("ABC","ab??c",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ABC","ab{0,1}?c",[caseless,
                                                                                                                                                                      trim]))),
    <<":">> = iolist_to_binary(join(re:split("ABC","ab{0,1}?c",[caseless,
                                                                                                                                                                        {parts,
                                                                                                                                                                         2}]))),
    <<":">> = iolist_to_binary(join(re:split("ABC","ab{0,1}?c",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ABC","^abc$",[caseless,
                                                                                                                                                               trim]))),
    <<":">> = iolist_to_binary(join(re:split("ABC","^abc$",[caseless,
                                                                                                                                                                 {parts,
                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("ABC","^abc$",[caseless]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^abc$",[caseless,
                                                                                                                                                                               trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^abc$",[caseless,
                                                                                                                                                                                 {parts,
                                                                                                                                                                                  2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^abc$",[caseless]))),
    <<"ABBBBC">> = iolist_to_binary(join(re:split("ABBBBC","^abc$",[caseless,
                                                                                                                                                                     trim]))),
    <<"ABBBBC">> = iolist_to_binary(join(re:split("ABBBBC","^abc$",[caseless,
                                                                                                                                                                       {parts,
                                                                                                                                                                        2}]))),
    <<"ABBBBC">> = iolist_to_binary(join(re:split("ABBBBC","^abc$",[caseless]))),
    <<"ABCC">> = iolist_to_binary(join(re:split("ABCC","^abc$",[caseless,
                                                                                                                                                                 trim]))),
    <<"ABCC">> = iolist_to_binary(join(re:split("ABCC","^abc$",[caseless,
                                                                                                                                                                   {parts,
                                                                                                                                                                    2}]))),
    <<"ABCC">> = iolist_to_binary(join(re:split("ABCC","^abc$",[caseless]))),
    <<":C">> = iolist_to_binary(join(re:split("ABCC","^abc",[caseless,
                                                                                                                                                              trim]))),
    <<":C">> = iolist_to_binary(join(re:split("ABCC","^abc",[caseless,
                                                                                                                                                                {parts,
                                                                                                                                                                 2}]))),
    <<":C">> = iolist_to_binary(join(re:split("ABCC","^abc",[caseless]))),
    <<"A">> = iolist_to_binary(join(re:split("AABC","abc$",[caseless,
                                                                                                                                                               trim]))),
    <<"A:">> = iolist_to_binary(join(re:split("AABC","abc$",[caseless,
                                                                                                                                                                 {parts,
                                                                                                                                                                  2}]))),
    <<"A:">> = iolist_to_binary(join(re:split("AABC","abc$",[caseless]))),
    <<"ABC">> = iolist_to_binary(join(re:split("ABC","^",[caseless,
                                                                                                                                                      trim]))),
    <<"ABC">> = iolist_to_binary(join(re:split("ABC","^",[caseless,
                                                                                                                                                        {parts,
                                                                                                                                                         2}]))),
    <<"ABC">> = iolist_to_binary(join(re:split("ABC","^",[caseless]))),
    <<"ABC">> = iolist_to_binary(join(re:split("ABC","$",[caseless,
                                                                                                                                                       trim]))),
    <<"ABC:">> = iolist_to_binary(join(re:split("ABC","$",[caseless,
                                                                                                                                                         {parts,
                                                                                                                                                          2}]))),
    <<"ABC:">> = iolist_to_binary(join(re:split("ABC","$",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ABC","a.c",[caseless,
                                                                                                                                                          trim]))),
    <<":">> = iolist_to_binary(join(re:split("ABC","a.c",[caseless,
                                                                                                                                                            {parts,
                                                                                                                                                             2}]))),
    <<":">> = iolist_to_binary(join(re:split("ABC","a.c",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("AXC","a.c",[caseless,
                                                                                                                                                          trim]))),
    <<":">> = iolist_to_binary(join(re:split("AXC","a.c",[caseless,
                                                                                                                                                            {parts,
                                                                                                                                                             2}]))),
    <<":">> = iolist_to_binary(join(re:split("AXC","a.c",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("AXYZC","a.*?c",[caseless,
                                                                                                                                                                  trim]))),
    <<":">> = iolist_to_binary(join(re:split("AXYZC","a.*?c",[caseless,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("AXYZC","a.*?c",[caseless]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a.*c",[caseless,
                                                                                                                                                                            trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a.*c",[caseless,
                                                                                                                                                                              {parts,
                                                                                                                                                                               2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a.*c",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("AABC","a.*c",[caseless,
                                                                                                                                                              trim]))),
    <<":">> = iolist_to_binary(join(re:split("AABC","a.*c",[caseless,
                                                                                                                                                                {parts,
                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("AABC","a.*c",[caseless]))),
    <<"AXYZD">> = iolist_to_binary(join(re:split("AXYZD","a.*c",[caseless,
                                                                                                                                                                trim]))),
    <<"AXYZD">> = iolist_to_binary(join(re:split("AXYZD","a.*c",[caseless,
                                                                                                                                                                  {parts,
                                                                                                                                                                   2}]))),
    <<"AXYZD">> = iolist_to_binary(join(re:split("AXYZD","a.*c",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ABD","a[bc]d",[caseless,
                                                                                                                                                                trim]))),
    <<":">> = iolist_to_binary(join(re:split("ABD","a[bc]d",[caseless,
                                                                                                                                                                  {parts,
                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("ABD","a[bc]d",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ACE","a[b-d]e",[caseless,
                                                                                                                                                                  trim]))),
    <<":">> = iolist_to_binary(join(re:split("ACE","a[b-d]e",[caseless,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("ACE","a[b-d]e",[caseless]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a[b-d]e",[caseless,
                                                                                                                                                                                  trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a[b-d]e",[caseless,
                                                                                                                                                                                    {parts,
                                                                                                                                                                                     2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a[b-d]e",[caseless]))),
    <<"ABC">> = iolist_to_binary(join(re:split("ABC","a[b-d]e",[caseless,
                                                                                                                                                                  trim]))),
    <<"ABC">> = iolist_to_binary(join(re:split("ABC","a[b-d]e",[caseless,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<"ABC">> = iolist_to_binary(join(re:split("ABC","a[b-d]e",[caseless]))),
    <<"ABD">> = iolist_to_binary(join(re:split("ABD","a[b-d]e",[caseless,
                                                                                                                                                                  trim]))),
    <<"ABD">> = iolist_to_binary(join(re:split("ABD","a[b-d]e",[caseless,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<"ABD">> = iolist_to_binary(join(re:split("ABD","a[b-d]e",[caseless]))),
    <<"A">> = iolist_to_binary(join(re:split("AAC","a[b-d]",[caseless,
                                                                                                                                                                trim]))),
    <<"A:">> = iolist_to_binary(join(re:split("AAC","a[b-d]",[caseless,
                                                                                                                                                                  {parts,
                                                                                                                                                                   2}]))),
    <<"A:">> = iolist_to_binary(join(re:split("AAC","a[b-d]",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("A-","a[-b]",[caseless,
                                                                                                                                                            trim]))),
    <<":">> = iolist_to_binary(join(re:split("A-","a[-b]",[caseless,
                                                                                                                                                              {parts,
                                                                                                                                                               2}]))),
    <<":">> = iolist_to_binary(join(re:split("A-","a[-b]",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("A-","a[b-]",[caseless,
                                                                                                                                                            trim]))),
    <<":">> = iolist_to_binary(join(re:split("A-","a[b-]",[caseless,
                                                                                                                                                              {parts,
                                                                                                                                                               2}]))),
    <<":">> = iolist_to_binary(join(re:split("A-","a[b-]",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("A]","a]",[caseless,
                                                                                                                                                      trim]))),
    <<":">> = iolist_to_binary(join(re:split("A]","a]",[caseless,
                                                                                                                                                        {parts,
                                                                                                                                                         2}]))),
    <<":">> = iolist_to_binary(join(re:split("A]","a]",[caseless]))),
    ok.
run22() ->
    <<"">> = iolist_to_binary(join(re:split("A]B","a[]]b",[caseless,
                                                                                                                                                              trim]))),
    <<":">> = iolist_to_binary(join(re:split("A]B","a[]]b",[caseless,
                                                                                                                                                                {parts,
                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("A]B","a[]]b",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("AED","a[^bc]d",[caseless,
                                                                                                                                                                  trim]))),
    <<":">> = iolist_to_binary(join(re:split("AED","a[^bc]d",[caseless,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("AED","a[^bc]d",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ADC","a[^-b]c",[caseless,
                                                                                                                                                                  trim]))),
    <<":">> = iolist_to_binary(join(re:split("ADC","a[^-b]c",[caseless,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("ADC","a[^-b]c",[caseless]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a[^-b]c",[caseless,
                                                                                                                                                                                  trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a[^-b]c",[caseless,
                                                                                                                                                                                    {parts,
                                                                                                                                                                                     2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a[^-b]c",[caseless]))),
    <<"ABD">> = iolist_to_binary(join(re:split("ABD","a[^-b]c",[caseless,
                                                                                                                                                                  trim]))),
    <<"ABD">> = iolist_to_binary(join(re:split("ABD","a[^-b]c",[caseless,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<"ABD">> = iolist_to_binary(join(re:split("ABD","a[^-b]c",[caseless]))),
    <<"A-C">> = iolist_to_binary(join(re:split("A-C","a[^-b]c",[caseless,
                                                                                                                                                                  trim]))),
    <<"A-C">> = iolist_to_binary(join(re:split("A-C","a[^-b]c",[caseless,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<"A-C">> = iolist_to_binary(join(re:split("A-C","a[^-b]c",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ADC","a[^]b]c",[caseless,
                                                                                                                                                                  trim]))),
    <<":">> = iolist_to_binary(join(re:split("ADC","a[^]b]c",[caseless,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("ADC","a[^]b]c",[caseless]))),
    <<":C">> = iolist_to_binary(join(re:split("ABC","ab|cd",[caseless,
                                                                                                                                                              trim]))),
    <<":C">> = iolist_to_binary(join(re:split("ABC","ab|cd",[caseless,
                                                                                                                                                                {parts,
                                                                                                                                                                 2}]))),
    <<":C">> = iolist_to_binary(join(re:split("ABC","ab|cd",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ABCD","ab|cd",[caseless,
                                                                                                                                                                trim]))),
    <<":CD">> = iolist_to_binary(join(re:split("ABCD","ab|cd",[caseless,
                                                                                                                                                                  {parts,
                                                                                                                                                                   2}]))),
    <<"::">> = iolist_to_binary(join(re:split("ABCD","ab|cd",[caseless]))),
    <<"D">> = iolist_to_binary(join(re:split("DEF","()ef",[caseless,
                                                                                                                                                            trim]))),
    <<"D::">> = iolist_to_binary(join(re:split("DEF","()ef",[caseless,
                                                                                                                                                              {parts,
                                                                                                                                                               2}]))),
    <<"D::">> = iolist_to_binary(join(re:split("DEF","()ef",[caseless]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","$b",[caseless,
                                                                                                                                                                          trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","$b",[caseless,
                                                                                                                                                                            {parts,
                                                                                                                                                                             2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","$b",[caseless]))),
    <<"A]C">> = iolist_to_binary(join(re:split("A]C","$b",[caseless,
                                                                                                                                                          trim]))),
    <<"A]C">> = iolist_to_binary(join(re:split("A]C","$b",[caseless,
                                                                                                                                                            {parts,
                                                                                                                                                             2}]))),
    <<"A]C">> = iolist_to_binary(join(re:split("A]C","$b",[caseless]))),
    <<"B">> = iolist_to_binary(join(re:split("B","$b",[caseless,
                                                                                                                                                      trim]))),
    <<"B">> = iolist_to_binary(join(re:split("B","$b",[caseless,
                                                                                                                                                        {parts,
                                                                                                                                                         2}]))),
    <<"B">> = iolist_to_binary(join(re:split("B","$b",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("A(B","a\\(b",[caseless,
                                                                                                                                                               trim]))),
    <<":">> = iolist_to_binary(join(re:split("A(B","a\\(b",[caseless,
                                                                                                                                                                 {parts,
                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("A(B","a\\(b",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("AB","a\\(*b",[caseless,
                                                                                                                                                               trim]))),
    <<":">> = iolist_to_binary(join(re:split("AB","a\\(*b",[caseless,
                                                                                                                                                                 {parts,
                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("AB","a\\(*b",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("A((B","a\\(*b",[caseless,
                                                                                                                                                                   trim]))),
    <<":">> = iolist_to_binary(join(re:split("A((B","a\\(*b",[caseless,
                                                                                                                                                                     {parts,
                                                                                                                                                                      2}]))),
    <<":">> = iolist_to_binary(join(re:split("A((B","a\\(*b",[caseless]))),
    <<"A">> = iolist_to_binary(join(re:split("A","a\\\\b",[caseless,
                                                                                                                                                              notbol,
                                                                                                                                                              trim]))),
    <<"A">> = iolist_to_binary(join(re:split("A","a\\\\b",[caseless,
                                                                                                                                                                notbol,
                                                                                                                                                                {parts,
                                                                                                                                                                 2}]))),
    <<"A">> = iolist_to_binary(join(re:split("A","a\\\\b",[caseless,
                                                                                                                                                                 notbol]))),
    <<":A:A:BC">> = iolist_to_binary(join(re:split("ABC","((a))",[caseless,
                                                                                                                                                              trim]))),
    <<":A:A:BC">> = iolist_to_binary(join(re:split("ABC","((a))",[caseless,
                                                                                                                                                                {parts,
                                                                                                                                                                 2}]))),
    <<":A:A:BC">> = iolist_to_binary(join(re:split("ABC","((a))",[caseless]))),
    <<":A:C">> = iolist_to_binary(join(re:split("ABC","(a)b(c)",[caseless,
                                                                                                                                                                  trim]))),
    <<":A:C:">> = iolist_to_binary(join(re:split("ABC","(a)b(c)",[caseless,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<":A:C:">> = iolist_to_binary(join(re:split("ABC","(a)b(c)",[caseless]))),
    <<"AABB">> = iolist_to_binary(join(re:split("AABBABC","a+b+c",[caseless,
                                                                                                                                                                      trim]))),
    <<"AABB:">> = iolist_to_binary(join(re:split("AABBABC","a+b+c",[caseless,
                                                                                                                                                                        {parts,
                                                                                                                                                                         2}]))),
    <<"AABB:">> = iolist_to_binary(join(re:split("AABBABC","a+b+c",[caseless]))),
    <<"AABB">> = iolist_to_binary(join(re:split("AABBABC","a{1,}b{1,}c",[caseless,
                                                                                                                                                                                  trim]))),
    <<"AABB:">> = iolist_to_binary(join(re:split("AABBABC","a{1,}b{1,}c",[caseless,
                                                                                                                                                                                    {parts,
                                                                                                                                                                                     2}]))),
    <<"AABB:">> = iolist_to_binary(join(re:split("AABBABC","a{1,}b{1,}c",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ABCABC","a.+?c",[caseless,
                                                                                                                                                                    trim]))),
    <<":ABC">> = iolist_to_binary(join(re:split("ABCABC","a.+?c",[caseless,
                                                                                                                                                                      {parts,
                                                                                                                                                                       2}]))),
    <<"::">> = iolist_to_binary(join(re:split("ABCABC","a.+?c",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ABCABC","a.*?c",[caseless,
                                                                                                                                                                    trim]))),
    <<":ABC">> = iolist_to_binary(join(re:split("ABCABC","a.*?c",[caseless,
                                                                                                                                                                      {parts,
                                                                                                                                                                       2}]))),
    <<"::">> = iolist_to_binary(join(re:split("ABCABC","a.*?c",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ABCABC","a.{0,5}?c",[caseless,
                                                                                                                                                                            trim]))),
    <<":ABC">> = iolist_to_binary(join(re:split("ABCABC","a.{0,5}?c",[caseless,
                                                                                                                                                                              {parts,
                                                                                                                                                                               2}]))),
    <<"::">> = iolist_to_binary(join(re:split("ABCABC","a.{0,5}?c",[caseless]))),
    <<":B">> = iolist_to_binary(join(re:split("AB","(a+|b)*",[caseless,
                                                                                                                                                                trim]))),
    <<":B:">> = iolist_to_binary(join(re:split("AB","(a+|b)*",[caseless,
                                                                                                                                                                  {parts,
                                                                                                                                                                   2}]))),
    <<":B:">> = iolist_to_binary(join(re:split("AB","(a+|b)*",[caseless]))),
    <<":B">> = iolist_to_binary(join(re:split("AB","(a+|b){0,}",[caseless,
                                                                                                                                                                      trim]))),
    <<":B:">> = iolist_to_binary(join(re:split("AB","(a+|b){0,}",[caseless,
                                                                                                                                                                        {parts,
                                                                                                                                                                         2}]))),
    <<":B:">> = iolist_to_binary(join(re:split("AB","(a+|b){0,}",[caseless]))),
    <<":B">> = iolist_to_binary(join(re:split("AB","(a+|b)+",[caseless,
                                                                                                                                                                trim]))),
    <<":B:">> = iolist_to_binary(join(re:split("AB","(a+|b)+",[caseless,
                                                                                                                                                                  {parts,
                                                                                                                                                                   2}]))),
    <<":B:">> = iolist_to_binary(join(re:split("AB","(a+|b)+",[caseless]))),
    ok.
run23() ->
    <<":B">> = iolist_to_binary(join(re:split("AB","(a+|b){1,}",[caseless,
                                                                                                                                                                      trim]))),
    <<":B:">> = iolist_to_binary(join(re:split("AB","(a+|b){1,}",[caseless,
                                                                                                                                                                        {parts,
                                                                                                                                                                         2}]))),
    <<":B:">> = iolist_to_binary(join(re:split("AB","(a+|b){1,}",[caseless]))),
    <<":A::B">> = iolist_to_binary(join(re:split("AB","(a+|b)?",[caseless,
                                                                                                                                                                trim]))),
    <<":A:B">> = iolist_to_binary(join(re:split("AB","(a+|b)?",[caseless,
                                                                                                                                                                  {parts,
                                                                                                                                                                   2}]))),
    <<":A::B:">> = iolist_to_binary(join(re:split("AB","(a+|b)?",[caseless]))),
    <<":A::B">> = iolist_to_binary(join(re:split("AB","(a+|b){0,1}",[caseless,
                                                                                                                                                                        trim]))),
    <<":A:B">> = iolist_to_binary(join(re:split("AB","(a+|b){0,1}",[caseless,
                                                                                                                                                                          {parts,
                                                                                                                                                                           2}]))),
    <<":A::B:">> = iolist_to_binary(join(re:split("AB","(a+|b){0,1}",[caseless]))),
    <<":A::B">> = iolist_to_binary(join(re:split("AB","(a+|b){0,1}?",[caseless,
                                                                                                                                                                          trim]))),
    <<":A:B">> = iolist_to_binary(join(re:split("AB","(a+|b){0,1}?",[caseless,
                                                                                                                                                                            {parts,
                                                                                                                                                                             2}]))),
    <<":A::B:">> = iolist_to_binary(join(re:split("AB","(a+|b){0,1}?",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("CDE","[^ab]*",[caseless,
                                                                                                                                                                trim]))),
    <<":">> = iolist_to_binary(join(re:split("CDE","[^ab]*",[caseless,
                                                                                                                                                                  {parts,
                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("CDE","[^ab]*",[caseless]))),
    <<":C">> = iolist_to_binary(join(re:split("ABBBCD","([abc])*d",[caseless,
                                                                                                                                                                            trim]))),
    <<":C:">> = iolist_to_binary(join(re:split("ABBBCD","([abc])*d",[caseless,
                                                                                                                                                                              {parts,
                                                                                                                                                                               2}]))),
    <<":C:">> = iolist_to_binary(join(re:split("ABBBCD","([abc])*d",[caseless]))),
    <<":A">> = iolist_to_binary(join(re:split("ABCD","([abc])*bcd",[caseless,
                                                                                                                                                                            trim]))),
    <<":A:">> = iolist_to_binary(join(re:split("ABCD","([abc])*bcd",[caseless,
                                                                                                                                                                              {parts,
                                                                                                                                                                               2}]))),
    <<":A:">> = iolist_to_binary(join(re:split("ABCD","([abc])*bcd",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("E","a|b|c|d|e",[caseless,
                                                                                                                                                                  trim]))),
    <<":">> = iolist_to_binary(join(re:split("E","a|b|c|d|e",[caseless,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("E","a|b|c|d|e",[caseless]))),
    <<":E">> = iolist_to_binary(join(re:split("EF","(a|b|c|d|e)f",[caseless,
                                                                                                                                                                          trim]))),
    <<":E:">> = iolist_to_binary(join(re:split("EF","(a|b|c|d|e)f",[caseless,
                                                                                                                                                                            {parts,
                                                                                                                                                                             2}]))),
    <<":E:">> = iolist_to_binary(join(re:split("EF","(a|b|c|d|e)f",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ABCDEFG","abcd*efg",[caseless,
                                                                                                                                                                            trim]))),
    <<":">> = iolist_to_binary(join(re:split("ABCDEFG","abcd*efg",[caseless,
                                                                                                                                                                              {parts,
                                                                                                                                                                               2}]))),
    <<":">> = iolist_to_binary(join(re:split("ABCDEFG","abcd*efg",[caseless]))),
    <<"X:Y:Z">> = iolist_to_binary(join(re:split("XABYABBBZ","ab*",[caseless,
                                                                                                                                                                      trim]))),
    <<"X:YABBBZ">> = iolist_to_binary(join(re:split("XABYABBBZ","ab*",[caseless,
                                                                                                                                                                        {parts,
                                                                                                                                                                         2}]))),
    <<"X:Y:Z">> = iolist_to_binary(join(re:split("XABYABBBZ","ab*",[caseless]))),
    <<"X:Y:Z">> = iolist_to_binary(join(re:split("XAYABBBZ","ab*",[caseless,
                                                                                                                                                                    trim]))),
    <<"X:YABBBZ">> = iolist_to_binary(join(re:split("XAYABBBZ","ab*",[caseless,
                                                                                                                                                                      {parts,
                                                                                                                                                                       2}]))),
    <<"X:Y:Z">> = iolist_to_binary(join(re:split("XAYABBBZ","ab*",[caseless]))),
    <<"AB:CD">> = iolist_to_binary(join(re:split("ABCDE","(ab|cd)e",[caseless,
                                                                                                                                                                        trim]))),
    <<"AB:CD:">> = iolist_to_binary(join(re:split("ABCDE","(ab|cd)e",[caseless,
                                                                                                                                                                          {parts,
                                                                                                                                                                           2}]))),
    <<"AB:CD:">> = iolist_to_binary(join(re:split("ABCDE","(ab|cd)e",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("HIJ","[abhgefdc]ij",[caseless,
                                                                                                                                                                            trim]))),
    <<":">> = iolist_to_binary(join(re:split("HIJ","[abhgefdc]ij",[caseless,
                                                                                                                                                                              {parts,
                                                                                                                                                                               2}]))),
    <<":">> = iolist_to_binary(join(re:split("HIJ","[abhgefdc]ij",[caseless]))),
    <<"ABCDE">> = iolist_to_binary(join(re:split("ABCDE","^(ab|cd)e",[caseless,
                                                                                                                                                                          trim]))),
    <<"ABCDE">> = iolist_to_binary(join(re:split("ABCDE","^(ab|cd)e",[caseless,
                                                                                                                                                                            {parts,
                                                                                                                                                                             2}]))),
    <<"ABCDE">> = iolist_to_binary(join(re:split("ABCDE","^(ab|cd)e",[caseless]))),
    <<"ABCD">> = iolist_to_binary(join(re:split("ABCDEF","(abc|)ef",[caseless,
                                                                                                                                                                          trim]))),
    <<"ABCD::">> = iolist_to_binary(join(re:split("ABCDEF","(abc|)ef",[caseless,
                                                                                                                                                                            {parts,
                                                                                                                                                                             2}]))),
    <<"ABCD::">> = iolist_to_binary(join(re:split("ABCDEF","(abc|)ef",[caseless]))),
    <<"A:B">> = iolist_to_binary(join(re:split("ABCD","(a|b)c*d",[caseless,
                                                                                                                                                                      trim]))),
    <<"A:B:">> = iolist_to_binary(join(re:split("ABCD","(a|b)c*d",[caseless,
                                                                                                                                                                        {parts,
                                                                                                                                                                         2}]))),
    <<"A:B:">> = iolist_to_binary(join(re:split("ABCD","(a|b)c*d",[caseless]))),
    <<":A">> = iolist_to_binary(join(re:split("ABC","(ab|ab*)bc",[caseless,
                                                                                                                                                                        trim]))),
    <<":A:">> = iolist_to_binary(join(re:split("ABC","(ab|ab*)bc",[caseless,
                                                                                                                                                                          {parts,
                                                                                                                                                                           2}]))),
    <<":A:">> = iolist_to_binary(join(re:split("ABC","(ab|ab*)bc",[caseless]))),
    <<":BC">> = iolist_to_binary(join(re:split("ABC","a([bc]*)c*",[caseless,
                                                                                                                                                                        trim]))),
    <<":BC:">> = iolist_to_binary(join(re:split("ABC","a([bc]*)c*",[caseless,
                                                                                                                                                                          {parts,
                                                                                                                                                                           2}]))),
    <<":BC:">> = iolist_to_binary(join(re:split("ABC","a([bc]*)c*",[caseless]))),
    ok.
run24() ->
    <<":BC:D">> = iolist_to_binary(join(re:split("ABCD","a([bc]*)(c*d)",[caseless,
                                                                                                                                                                                trim]))),
    <<":BC:D:">> = iolist_to_binary(join(re:split("ABCD","a([bc]*)(c*d)",[caseless,
                                                                                                                                                                                  {parts,
                                                                                                                                                                                   2}]))),
    <<":BC:D:">> = iolist_to_binary(join(re:split("ABCD","a([bc]*)(c*d)",[caseless]))),
    <<":BC:D">> = iolist_to_binary(join(re:split("ABCD","a([bc]+)(c*d)",[caseless,
                                                                                                                                                                                trim]))),
    <<":BC:D:">> = iolist_to_binary(join(re:split("ABCD","a([bc]+)(c*d)",[caseless,
                                                                                                                                                                                  {parts,
                                                                                                                                                                                   2}]))),
    <<":BC:D:">> = iolist_to_binary(join(re:split("ABCD","a([bc]+)(c*d)",[caseless]))),
    <<":B:CD">> = iolist_to_binary(join(re:split("ABCD","a([bc]*)(c+d)",[caseless,
                                                                                                                                                                                trim]))),
    <<":B:CD:">> = iolist_to_binary(join(re:split("ABCD","a([bc]*)(c+d)",[caseless,
                                                                                                                                                                                  {parts,
                                                                                                                                                                                   2}]))),
    <<":B:CD:">> = iolist_to_binary(join(re:split("ABCD","a([bc]*)(c+d)",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ADCDCDE","a[bcd]*dcdcde",[caseless,
                                                                                                                                                                                      trim]))),
    <<":">> = iolist_to_binary(join(re:split("ADCDCDE","a[bcd]*dcdcde",[caseless,
                                                                                                                                                                                        {parts,
                                                                                                                                                                                         2}]))),
    <<":">> = iolist_to_binary(join(re:split("ADCDCDE","a[bcd]*dcdcde",[caseless]))),
    <<":AB">> = iolist_to_binary(join(re:split("ABC","(ab|a)b*c",[caseless,
                                                                                                                                                                      trim]))),
    <<":AB:">> = iolist_to_binary(join(re:split("ABC","(ab|a)b*c",[caseless,
                                                                                                                                                                        {parts,
                                                                                                                                                                         2}]))),
    <<":AB:">> = iolist_to_binary(join(re:split("ABC","(ab|a)b*c",[caseless]))),
    <<":ABC:A:B:D">> = iolist_to_binary(join(re:split("ABCD","((a)(b)c)(d)",[caseless,
                                                                                                                                                                              trim]))),
    <<":ABC:A:B:D:">> = iolist_to_binary(join(re:split("ABCD","((a)(b)c)(d)",[caseless,
                                                                                                                                                                                {parts,
                                                                                                                                                                                 2}]))),
    <<":ABC:A:B:D:">> = iolist_to_binary(join(re:split("ABCD","((a)(b)c)(d)",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ALPHA","[a-zA-Z_][a-zA-Z0-9_]*",[caseless,
                                                                                                                                                                                                    trim]))),
    <<":">> = iolist_to_binary(join(re:split("ALPHA","[a-zA-Z_][a-zA-Z0-9_]*",[caseless,
                                                                                                                                                                                                      {parts,
                                                                                                                                                                                                       2}]))),
    <<":">> = iolist_to_binary(join(re:split("ALPHA","[a-zA-Z_][a-zA-Z0-9_]*",[caseless]))),
    <<"A">> = iolist_to_binary(join(re:split("ABH","^a(bc+|b[eh])g|.h$",[caseless,
                                                                                                                                                                                         trim]))),
    <<"A::">> = iolist_to_binary(join(re:split("ABH","^a(bc+|b[eh])g|.h$",[caseless,
                                                                                                                                                                                           {parts,
                                                                                                                                                                                            2}]))),
    <<"A::">> = iolist_to_binary(join(re:split("ABH","^a(bc+|b[eh])g|.h$",[caseless]))),
    <<":EFFGZ">> = iolist_to_binary(join(re:split("EFFGZ","(bc+d$|ef*g.|h?i(j|k))",[caseless,
                                                                                                                                                                                                     trim]))),
    <<":EFFGZ::">> = iolist_to_binary(join(re:split("EFFGZ","(bc+d$|ef*g.|h?i(j|k))",[caseless,
                                                                                                                                                                                                       {parts,
                                                                                                                                                                                                        2}]))),
    <<":EFFGZ::">> = iolist_to_binary(join(re:split("EFFGZ","(bc+d$|ef*g.|h?i(j|k))",[caseless]))),
    <<":IJ:J">> = iolist_to_binary(join(re:split("IJ","(bc+d$|ef*g.|h?i(j|k))",[caseless,
                                                                                                                                                                                               trim]))),
    <<":IJ:J:">> = iolist_to_binary(join(re:split("IJ","(bc+d$|ef*g.|h?i(j|k))",[caseless,
                                                                                                                                                                                                 {parts,
                                                                                                                                                                                                  2}]))),
    <<":IJ:J:">> = iolist_to_binary(join(re:split("IJ","(bc+d$|ef*g.|h?i(j|k))",[caseless]))),
    <<"R:EFFGZ">> = iolist_to_binary(join(re:split("REFFGZ","(bc+d$|ef*g.|h?i(j|k))",[caseless,
                                                                                                                                                                                                       trim]))),
    <<"R:EFFGZ::">> = iolist_to_binary(join(re:split("REFFGZ","(bc+d$|ef*g.|h?i(j|k))",[caseless,
                                                                                                                                                                                                         {parts,
                                                                                                                                                                                                          2}]))),
    <<"R:EFFGZ::">> = iolist_to_binary(join(re:split("REFFGZ","(bc+d$|ef*g.|h?i(j|k))",[caseless]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(bc+d$|ef*g.|h?i(j|k))",[caseless,
                                                                                                                                                                                                                 trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(bc+d$|ef*g.|h?i(j|k))",[caseless,
                                                                                                                                                                                                                   {parts,
                                                                                                                                                                                                                    2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(bc+d$|ef*g.|h?i(j|k))",[caseless]))),
    <<"ADCDCDE">> = iolist_to_binary(join(re:split("ADCDCDE","(bc+d$|ef*g.|h?i(j|k))",[caseless,
                                                                                                                                                                                                         trim]))),
    <<"ADCDCDE">> = iolist_to_binary(join(re:split("ADCDCDE","(bc+d$|ef*g.|h?i(j|k))",[caseless,
                                                                                                                                                                                                           {parts,
                                                                                                                                                                                                            2}]))),
    <<"ADCDCDE">> = iolist_to_binary(join(re:split("ADCDCDE","(bc+d$|ef*g.|h?i(j|k))",[caseless]))),
    <<"EFFG">> = iolist_to_binary(join(re:split("EFFG","(bc+d$|ef*g.|h?i(j|k))",[caseless,
                                                                                                                                                                                                   trim]))),
    <<"EFFG">> = iolist_to_binary(join(re:split("EFFG","(bc+d$|ef*g.|h?i(j|k))",[caseless,
                                                                                                                                                                                                     {parts,
                                                                                                                                                                                                      2}]))),
    <<"EFFG">> = iolist_to_binary(join(re:split("EFFG","(bc+d$|ef*g.|h?i(j|k))",[caseless]))),
    <<"BCDD">> = iolist_to_binary(join(re:split("BCDD","(bc+d$|ef*g.|h?i(j|k))",[caseless,
                                                                                                                                                                                                   trim]))),
    <<"BCDD">> = iolist_to_binary(join(re:split("BCDD","(bc+d$|ef*g.|h?i(j|k))",[caseless,
                                                                                                                                                                                                     {parts,
                                                                                                                                                                                                      2}]))),
    <<"BCDD">> = iolist_to_binary(join(re:split("BCDD","(bc+d$|ef*g.|h?i(j|k))",[caseless]))),
    <<":A:A:A:A:A:A:A:A:A:A">> = iolist_to_binary(join(re:split("A","((((((((((a))))))))))",[caseless,
                                                                                                                                                                                          trim]))),
    <<":A:A:A:A:A:A:A:A:A:A:">> = iolist_to_binary(join(re:split("A","((((((((((a))))))))))",[caseless,
                                                                                                                                                                                            {parts,
                                                                                                                                                                                             2}]))),
    <<":A:A:A:A:A:A:A:A:A:A:">> = iolist_to_binary(join(re:split("A","((((((((((a))))))))))",[caseless]))),
    <<":A:A:A:A:A:A:A:A:A:A">> = iolist_to_binary(join(re:split("AA","((((((((((a))))))))))\\10",[caseless,
                                                                                                                                                                                                     trim]))),
    <<":A:A:A:A:A:A:A:A:A:A:">> = iolist_to_binary(join(re:split("AA","((((((((((a))))))))))\\10",[caseless,
                                                                                                                                                                                                       {parts,
                                                                                                                                                                                                        2}]))),
    <<":A:A:A:A:A:A:A:A:A:A:">> = iolist_to_binary(join(re:split("AA","((((((((((a))))))))))\\10",[caseless]))),
    <<":A:A:A:A:A:A:A:A:A">> = iolist_to_binary(join(re:split("A","(((((((((a)))))))))",[caseless,
                                                                                                                                                                                      trim]))),
    <<":A:A:A:A:A:A:A:A:A:">> = iolist_to_binary(join(re:split("A","(((((((((a)))))))))",[caseless,
                                                                                                                                                                                        {parts,
                                                                                                                                                                                         2}]))),
    <<":A:A:A:A:A:A:A:A:A:">> = iolist_to_binary(join(re:split("A","(((((((((a)))))))))",[caseless]))),
    <<":A">> = iolist_to_binary(join(re:split("A","(?:(?:(?:(?:(?:(?:(?:(?:(?:(a))))))))))",[caseless,
                                                                                                                                                                                                                              trim]))),
    <<":A:">> = iolist_to_binary(join(re:split("A","(?:(?:(?:(?:(?:(?:(?:(?:(?:(a))))))))))",[caseless,
                                                                                                                                                                                                                                {parts,
                                                                                                                                                                                                                                 2}]))),
    <<":A:">> = iolist_to_binary(join(re:split("A","(?:(?:(?:(?:(?:(?:(?:(?:(?:(a))))))))))",[caseless]))),
    <<":C">> = iolist_to_binary(join(re:split("C","(?:(?:(?:(?:(?:(?:(?:(?:(?:(a|b|c))))))))))",[caseless,
                                                                                                                                                                                                                                      trim]))),
    <<":C:">> = iolist_to_binary(join(re:split("C","(?:(?:(?:(?:(?:(?:(?:(?:(?:(a|b|c))))))))))",[caseless,
                                                                                                                                                                                                                                        {parts,
                                                                                                                                                                                                                                         2}]))),
    <<":C:">> = iolist_to_binary(join(re:split("C","(?:(?:(?:(?:(?:(?:(?:(?:(?:(a|b|c))))))))))",[caseless]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","multiple words of text",[caseless,
                                                                                                                                                                                                                trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","multiple words of text",[caseless,
                                                                                                                                                                                                                  {parts,
                                                                                                                                                                                                                   2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","multiple words of text",[caseless]))),
    <<"AA">> = iolist_to_binary(join(re:split("AA","multiple words of text",[caseless,
                                                                                                                                                                                              trim]))),
    <<"AA">> = iolist_to_binary(join(re:split("AA","multiple words of text",[caseless,
                                                                                                                                                                                                {parts,
                                                                                                                                                                                                 2}]))),
    <<"AA">> = iolist_to_binary(join(re:split("AA","multiple words of text",[caseless]))),
    <<"UH-UH">> = iolist_to_binary(join(re:split("UH-UH","multiple words of text",[caseless,
                                                                                                                                                                                                    trim]))),
    <<"UH-UH">> = iolist_to_binary(join(re:split("UH-UH","multiple words of text",[caseless,
                                                                                                                                                                                                      {parts,
                                                                                                                                                                                                       2}]))),
    <<"UH-UH">> = iolist_to_binary(join(re:split("UH-UH","multiple words of text",[caseless]))),
    <<":, YEAH">> = iolist_to_binary(join(re:split("MULTIPLE WORDS, YEAH","multiple words",[caseless,
                                                                                                                                                                                                                  trim]))),
    <<":, YEAH">> = iolist_to_binary(join(re:split("MULTIPLE WORDS, YEAH","multiple words",[caseless,
                                                                                                                                                                                                                    {parts,
                                                                                                                                                                                                                     2}]))),
    <<":, YEAH">> = iolist_to_binary(join(re:split("MULTIPLE WORDS, YEAH","multiple words",[caseless]))),
    <<":AB:DE">> = iolist_to_binary(join(re:split("ABCDE","(.*)c(.*)",[caseless,
                                                                                                                                                                          trim]))),
    <<":AB:DE:">> = iolist_to_binary(join(re:split("ABCDE","(.*)c(.*)",[caseless,
                                                                                                                                                                            {parts,
                                                                                                                                                                             2}]))),
    <<":AB:DE:">> = iolist_to_binary(join(re:split("ABCDE","(.*)c(.*)",[caseless]))),
    <<":A:B">> = iolist_to_binary(join(re:split("(A, B)","\\((.*), (.*)\\)",[caseless,
                                                                                                                                                                                            trim]))),
    <<":A:B:">> = iolist_to_binary(join(re:split("(A, B)","\\((.*), (.*)\\)",[caseless,
                                                                                                                                                                                              {parts,
                                                                                                                                                                                               2}]))),
    <<":A:B:">> = iolist_to_binary(join(re:split("(A, B)","\\((.*), (.*)\\)",[caseless]))),
    ok.
run25() ->
    <<"">> = iolist_to_binary(join(re:split("ABCD","abcd",[caseless,
                                                                                                                                                              trim]))),
    <<":">> = iolist_to_binary(join(re:split("ABCD","abcd",[caseless,
                                                                                                                                                                {parts,
                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("ABCD","abcd",[caseless]))),
    <<":BC">> = iolist_to_binary(join(re:split("ABCD","a(bc)d",[caseless,
                                                                                                                                                                  trim]))),
    <<":BC:">> = iolist_to_binary(join(re:split("ABCD","a(bc)d",[caseless,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<":BC:">> = iolist_to_binary(join(re:split("ABCD","a(bc)d",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("AC","a[-]?c",[caseless,
                                                                                                                                                              trim]))),
    <<":">> = iolist_to_binary(join(re:split("AC","a[-]?c",[caseless,
                                                                                                                                                                {parts,
                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("AC","a[-]?c",[caseless]))),
    <<":ABC">> = iolist_to_binary(join(re:split("ABCABC","(abc)\\1",[caseless,
                                                                                                                                                                           trim]))),
    <<":ABC:">> = iolist_to_binary(join(re:split("ABCABC","(abc)\\1",[caseless,
                                                                                                                                                                             {parts,
                                                                                                                                                                              2}]))),
    <<":ABC:">> = iolist_to_binary(join(re:split("ABCABC","(abc)\\1",[caseless]))),
    <<":ABC">> = iolist_to_binary(join(re:split("ABCABC","([a-c]*)\\1",[caseless,
                                                                                                                                                                                 trim]))),
    <<":ABC:">> = iolist_to_binary(join(re:split("ABCABC","([a-c]*)\\1",[caseless,
                                                                                                                                                                                   {parts,
                                                                                                                                                                                    2}]))),
    <<":ABC:">> = iolist_to_binary(join(re:split("ABCABC","([a-c]*)\\1",[caseless]))),
    <<"ab">> = iolist_to_binary(join(re:split("abad","a(?!b).",[trim]))),
    <<"ab:">> = iolist_to_binary(join(re:split("abad","a(?!b).",[{parts,
                                                                                                                                                                      2}]))),
    <<"ab:">> = iolist_to_binary(join(re:split("abad","a(?!b).",[]))),
    <<"ab">> = iolist_to_binary(join(re:split("abad","a(?=d).",[trim]))),
    <<"ab:">> = iolist_to_binary(join(re:split("abad","a(?=d).",[{parts,
                                                                                                                                                                      2}]))),
    <<"ab:">> = iolist_to_binary(join(re:split("abad","a(?=d).",[]))),
    <<"ab">> = iolist_to_binary(join(re:split("abad","a(?=c|d).",[trim]))),
    <<"ab:">> = iolist_to_binary(join(re:split("abad","a(?=c|d).",[{parts,
                                                                                                                                                                          2}]))),
    <<"ab:">> = iolist_to_binary(join(re:split("abad","a(?=c|d).",[]))),
    <<":e">> = iolist_to_binary(join(re:split("ace","a(?:b|c|d)(.)",[trim]))),
    <<":e:">> = iolist_to_binary(join(re:split("ace","a(?:b|c|d)(.)",[{parts,
                                                                                                                                                                                2}]))),
    <<":e:">> = iolist_to_binary(join(re:split("ace","a(?:b|c|d)(.)",[]))),
    <<":e">> = iolist_to_binary(join(re:split("ace","a(?:b|c|d)*(.)",[trim]))),
    <<":e:">> = iolist_to_binary(join(re:split("ace","a(?:b|c|d)*(.)",[{parts,
                                                                                                                                                                                  2}]))),
    <<":e:">> = iolist_to_binary(join(re:split("ace","a(?:b|c|d)*(.)",[]))),
    <<":e">> = iolist_to_binary(join(re:split("ace","a(?:b|c|d)+?(.)",[trim]))),
    <<":e:">> = iolist_to_binary(join(re:split("ace","a(?:b|c|d)+?(.)",[{parts,
                                                                                                                                                                                    2}]))),
    <<":e:">> = iolist_to_binary(join(re:split("ace","a(?:b|c|d)+?(.)",[]))),
    <<":d:bcdbe">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d)+?(.)",[trim]))),
    <<":d:bcdbe">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d)+?(.)",[{parts,
                                                                                                                                                                                              2}]))),
    <<":d:bcdbe">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d)+?(.)",[]))),
    <<":e">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d)+(.)",[trim]))),
    <<":e:">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d)+(.)",[{parts,
                                                                                                                                                                                            2}]))),
    <<":e:">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d)+(.)",[]))),
    <<":b:cdbe">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){2}(.)",[trim]))),
    <<":b:cdbe">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){2}(.)",[{parts,
                                                                                                                                                                                                2}]))),
    <<":b:cdbe">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){2}(.)",[]))),
    <<":b:e">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){4,5}(.)",[trim]))),
    <<":b:e">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){4,5}(.)",[{parts,
                                                                                                                                                                                                    2}]))),
    <<":b:e">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){4,5}(.)",[]))),
    <<":d:be">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){4,5}?(.)",[trim]))),
    <<":d:be">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){4,5}?(.)",[{parts,
                                                                                                                                                                                                      2}]))),
    <<":d:be">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){4,5}?(.)",[]))),
    <<":bar:foo:bar">> = iolist_to_binary(join(re:split("foobar","((foo)|(bar))*",[trim]))),
    <<":bar:foo:bar:">> = iolist_to_binary(join(re:split("foobar","((foo)|(bar))*",[{parts,
                                                                                                                                                                                        2}]))),
    <<":bar:foo:bar:">> = iolist_to_binary(join(re:split("foobar","((foo)|(bar))*",[]))),
    <<":e">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){6,7}(.)",[trim]))),
    <<":e:">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){6,7}(.)",[{parts,
                                                                                                                                                                                                    2}]))),
    <<":e:">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){6,7}(.)",[]))),
    <<":e">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){6,7}?(.)",[trim]))),
    <<":e:">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){6,7}?(.)",[{parts,
                                                                                                                                                                                                      2}]))),
    <<":e:">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){6,7}?(.)",[]))),
    <<":e">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){5,6}(.)",[trim]))),
    <<":e:">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){5,6}(.)",[{parts,
                                                                                                                                                                                                    2}]))),
    <<":e:">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){5,6}(.)",[]))),
    <<":b:e">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){5,6}?(.)",[trim]))),
    <<":b:e">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){5,6}?(.)",[{parts,
                                                                                                                                                                                                      2}]))),
    <<":b:e">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){5,6}?(.)",[]))),
    ok.
run26() ->
    <<":e">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){5,7}(.)",[trim]))),
    <<":e:">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){5,7}(.)",[{parts,
                                                                                                                                                                                                    2}]))),
    <<":e:">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){5,7}(.)",[]))),
    <<":b:e">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){5,7}?(.)",[trim]))),
    <<":b:e">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){5,7}?(.)",[{parts,
                                                                                                                                                                                                      2}]))),
    <<":b:e">> = iolist_to_binary(join(re:split("acdbcdbe","a(?:b|c|d){5,7}?(.)",[]))),
    <<":c:e">> = iolist_to_binary(join(re:split("ace","a(?:b|(c|e){1,2}?|d)+?(.)",[trim]))),
    <<":c:e:">> = iolist_to_binary(join(re:split("ace","a(?:b|(c|e){1,2}?|d)+?(.)",[{parts,
                                                                                                                                                                                                        2}]))),
    <<":c:e:">> = iolist_to_binary(join(re:split("ace","a(?:b|(c|e){1,2}?|d)+?(.)",[]))),
    <<":A">> = iolist_to_binary(join(re:split("AB","^(.+)?B",[trim]))),
    <<":A:">> = iolist_to_binary(join(re:split("AB","^(.+)?B",[{parts,
                                                                                                                                                                  2}]))),
    <<":A:">> = iolist_to_binary(join(re:split("AB","^(.+)?B",[]))),
    <<":.">> = iolist_to_binary(join(re:split(".","^([^a-z])|(\\^)$",[trim]))),
    <<":.::">> = iolist_to_binary(join(re:split(".","^([^a-z])|(\\^)$",[{parts,
                                                                                                                                                                                    2}]))),
    <<":.::">> = iolist_to_binary(join(re:split(".","^([^a-z])|(\\^)$",[]))),
    <<":OUT">> = iolist_to_binary(join(re:split("<&OUT","^[<>]&",[trim]))),
    <<":OUT">> = iolist_to_binary(join(re:split("<&OUT","^[<>]&",[{parts,
                                                                                                                                                                      2}]))),
    <<":OUT">> = iolist_to_binary(join(re:split("<&OUT","^[<>]&",[]))),
    <<":aaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaa","^(a\\1?){4}$",[trim]))),
    <<":aaaa:">> = iolist_to_binary(join(re:split("aaaaaaaaaa","^(a\\1?){4}$",[{parts,
                                                                                                                                                                                              2}]))),
    <<":aaaa:">> = iolist_to_binary(join(re:split("aaaaaaaaaa","^(a\\1?){4}$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a\\1?){4}$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a\\1?){4}$",[{parts,
                                                                                                                                                                                                2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a\\1?){4}$",[]))),
    <<"AB">> = iolist_to_binary(join(re:split("AB","^(a\\1?){4}$",[trim]))),
    <<"AB">> = iolist_to_binary(join(re:split("AB","^(a\\1?){4}$",[{parts,
                                                                                                                                                                              2}]))),
    <<"AB">> = iolist_to_binary(join(re:split("AB","^(a\\1?){4}$",[]))),
    <<"aaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaa","^(a\\1?){4}$",[trim]))),
    <<"aaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaa","^(a\\1?){4}$",[{parts,
                                                                                                                                                                                            2}]))),
    <<"aaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaa","^(a\\1?){4}$",[]))),
    <<"aaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaa","^(a\\1?){4}$",[trim]))),
    <<"aaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaa","^(a\\1?){4}$",[{parts,
                                                                                                                                                                                                2}]))),
    <<"aaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaa","^(a\\1?){4}$",[]))),
    <<":aaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaa","^(a(?(1)\\1)){4}$",[trim]))),
    <<":aaaa:">> = iolist_to_binary(join(re:split("aaaaaaaaaa","^(a(?(1)\\1)){4}$",[{parts,
                                                                                                                                                                                                        2}]))),
    <<":aaaa:">> = iolist_to_binary(join(re:split("aaaaaaaaaa","^(a(?(1)\\1)){4}$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a(?(1)\\1)){4}$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a(?(1)\\1)){4}$",[{parts,
                                                                                                                                                                                                          2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a(?(1)\\1)){4}$",[]))),
    <<"aaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaa","^(a(?(1)\\1)){4}$",[trim]))),
    <<"aaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaa","^(a(?(1)\\1)){4}$",[{parts,
                                                                                                                                                                                                      2}]))),
    <<"aaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaa","^(a(?(1)\\1)){4}$",[]))),
    <<"aaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaa","^(a(?(1)\\1)){4}$",[trim]))),
    <<"aaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaa","^(a(?(1)\\1)){4}$",[{parts,
                                                                                                                                                                                                          2}]))),
    <<"aaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaa","^(a(?(1)\\1)){4}$",[]))),
    <<":f:o:o:b:a:r">> = iolist_to_binary(join(re:split("foobar","(?:(f)(o)(o)|(b)(a)(r))*",[trim]))),
    <<":f:o:o:b:a:r:">> = iolist_to_binary(join(re:split("foobar","(?:(f)(o)(o)|(b)(a)(r))*",[{parts,
                                                                                                                                                                                                            2}]))),
    <<":f:o:o:b:a:r:">> = iolist_to_binary(join(re:split("foobar","(?:(f)(o)(o)|(b)(a)(r))*",[]))),
    <<"a">> = iolist_to_binary(join(re:split("ab","(?<=a)b",[trim]))),
    <<"a:">> = iolist_to_binary(join(re:split("ab","(?<=a)b",[{parts,
                                                                                                                                                                  2}]))),
    <<"a:">> = iolist_to_binary(join(re:split("ab","(?<=a)b",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=a)b",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=a)b",[{parts,
                                                                                                                                                                                    2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=a)b",[]))),
    <<"cb">> = iolist_to_binary(join(re:split("cb","(?<=a)b",[trim]))),
    <<"cb">> = iolist_to_binary(join(re:split("cb","(?<=a)b",[{parts,
                                                                                                                                                                  2}]))),
    <<"cb">> = iolist_to_binary(join(re:split("cb","(?<=a)b",[]))),
    <<"b">> = iolist_to_binary(join(re:split("b","(?<=a)b",[trim]))),
    <<"b">> = iolist_to_binary(join(re:split("b","(?<=a)b",[{parts,
                                                                                                                                                                2}]))),
    <<"b">> = iolist_to_binary(join(re:split("b","(?<=a)b",[]))),
    <<"a">> = iolist_to_binary(join(re:split("ab","(?<!c)b",[trim]))),
    <<"a:">> = iolist_to_binary(join(re:split("ab","(?<!c)b",[{parts,
                                                                                                                                                                  2}]))),
    <<"a:">> = iolist_to_binary(join(re:split("ab","(?<!c)b",[]))),
    <<"">> = iolist_to_binary(join(re:split("b","(?<!c)b",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("b","(?<!c)b",[{parts,
                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("b","(?<!c)b",[]))),
    <<"">> = iolist_to_binary(join(re:split("b","(?<!c)b",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("b","(?<!c)b",[{parts,
                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("b","(?<!c)b",[]))),
    <<"">> = iolist_to_binary(join(re:split("aba","(?:..)*a",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aba","(?:..)*a",[{parts,
                                                                                                                                                                      2}]))),
    <<":">> = iolist_to_binary(join(re:split("aba","(?:..)*a",[]))),
    <<":b">> = iolist_to_binary(join(re:split("aba","(?:..)*?a",[trim]))),
    <<":ba">> = iolist_to_binary(join(re:split("aba","(?:..)*?a",[{parts,
                                                                                                                                                                        2}]))),
    <<":b:">> = iolist_to_binary(join(re:split("aba","(?:..)*?a",[]))),
    <<":b:c">> = iolist_to_binary(join(re:split("abc","^(?:b|a(?=(.)))*\\1",[trim]))),
    <<":b:c">> = iolist_to_binary(join(re:split("abc","^(?:b|a(?=(.)))*\\1",[{parts,
                                                                                                                                                                                             2}]))),
    <<":b:c">> = iolist_to_binary(join(re:split("abc","^(?:b|a(?=(.)))*\\1",[]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","^(){3,5}",[trim]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","^(){3,5}",[{parts,
                                                                                                                                                                      2}]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","^(){3,5}",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aax","^(a+)*ax",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aax","^(a+)*ax",[{parts,
                                                                                                                                                                      2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aax","^(a+)*ax",[]))),
    <<":a:a">> = iolist_to_binary(join(re:split("aax","^((a|b)+)*ax",[trim]))),
    <<":a:a:">> = iolist_to_binary(join(re:split("aax","^((a|b)+)*ax",[{parts,
                                                                                                                                                                              2}]))),
    <<":a:a:">> = iolist_to_binary(join(re:split("aax","^((a|b)+)*ax",[]))),
    <<":a:a">> = iolist_to_binary(join(re:split("aax","^((a|bc)+)*ax",[trim]))),
    <<":a:a:">> = iolist_to_binary(join(re:split("aax","^((a|bc)+)*ax",[{parts,
                                                                                                                                                                                2}]))),
    <<":a:a:">> = iolist_to_binary(join(re:split("aax","^((a|bc)+)*ax",[]))),
    <<"c">> = iolist_to_binary(join(re:split("cab","(a|x)*ab",[trim]))),
    <<"c::">> = iolist_to_binary(join(re:split("cab","(a|x)*ab",[{parts,
                                                                                                                                                                      2}]))),
    <<"c::">> = iolist_to_binary(join(re:split("cab","(a|x)*ab",[]))),
    <<"c">> = iolist_to_binary(join(re:split("cab","(a)*ab",[trim]))),
    <<"c::">> = iolist_to_binary(join(re:split("cab","(a)*ab",[{parts,
                                                                                                                                                                  2}]))),
    <<"c::">> = iolist_to_binary(join(re:split("cab","(a)*ab",[]))),
    ok.
run27() ->
    <<"">> = iolist_to_binary(join(re:split("ab","(?:(?i)a)b",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("ab","(?:(?i)a)b",[{parts,
                                                                                                                                                                        2}]))),
    <<":">> = iolist_to_binary(join(re:split("ab","(?:(?i)a)b",[]))),
    <<":a">> = iolist_to_binary(join(re:split("ab","((?i)a)b",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("ab","((?i)a)b",[{parts,
                                                                                                                                                                    2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("ab","((?i)a)b",[]))),
    <<"">> = iolist_to_binary(join(re:split("Ab","(?:(?i)a)b",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("Ab","(?:(?i)a)b",[{parts,
                                                                                                                                                                        2}]))),
    <<":">> = iolist_to_binary(join(re:split("Ab","(?:(?i)a)b",[]))),
    <<":A">> = iolist_to_binary(join(re:split("Ab","((?i)a)b",[trim]))),
    <<":A:">> = iolist_to_binary(join(re:split("Ab","((?i)a)b",[{parts,
                                                                                                                                                                    2}]))),
    <<":A:">> = iolist_to_binary(join(re:split("Ab","((?i)a)b",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?:(?i)a)b",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?:(?i)a)b",[{parts,
                                                                                                                                                                                          2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?:(?i)a)b",[]))),
    <<"cb">> = iolist_to_binary(join(re:split("cb","(?:(?i)a)b",[trim]))),
    <<"cb">> = iolist_to_binary(join(re:split("cb","(?:(?i)a)b",[{parts,
                                                                                                                                                                        2}]))),
    <<"cb">> = iolist_to_binary(join(re:split("cb","(?:(?i)a)b",[]))),
    <<"aB">> = iolist_to_binary(join(re:split("aB","(?:(?i)a)b",[trim]))),
    <<"aB">> = iolist_to_binary(join(re:split("aB","(?:(?i)a)b",[{parts,
                                                                                                                                                                        2}]))),
    <<"aB">> = iolist_to_binary(join(re:split("aB","(?:(?i)a)b",[]))),
    <<"">> = iolist_to_binary(join(re:split("ab","(?i:a)b",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("ab","(?i:a)b",[{parts,
                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("ab","(?i:a)b",[]))),
    <<":a">> = iolist_to_binary(join(re:split("ab","((?i:a))b",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("ab","((?i:a))b",[{parts,
                                                                                                                                                                      2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("ab","((?i:a))b",[]))),
    <<"">> = iolist_to_binary(join(re:split("Ab","(?i:a)b",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("Ab","(?i:a)b",[{parts,
                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("Ab","(?i:a)b",[]))),
    <<":A">> = iolist_to_binary(join(re:split("Ab","((?i:a))b",[trim]))),
    <<":A:">> = iolist_to_binary(join(re:split("Ab","((?i:a))b",[{parts,
                                                                                                                                                                      2}]))),
    <<":A:">> = iolist_to_binary(join(re:split("Ab","((?i:a))b",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?i:a)b",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?i:a)b",[{parts,
                                                                                                                                                                                    2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?i:a)b",[]))),
    <<"aB">> = iolist_to_binary(join(re:split("aB","(?i:a)b",[trim]))),
    <<"aB">> = iolist_to_binary(join(re:split("aB","(?i:a)b",[{parts,
                                                                                                                                                                  2}]))),
    <<"aB">> = iolist_to_binary(join(re:split("aB","(?i:a)b",[]))),
    <<"aB">> = iolist_to_binary(join(re:split("aB","(?i:a)b",[trim]))),
    <<"aB">> = iolist_to_binary(join(re:split("aB","(?i:a)b",[{parts,
                                                                                                                                                                  2}]))),
    <<"aB">> = iolist_to_binary(join(re:split("aB","(?i:a)b",[]))),
    <<"">> = iolist_to_binary(join(re:split("ab","(?:(?-i)a)b",[caseless,
                                                                                                                                                                        trim]))),
    <<":">> = iolist_to_binary(join(re:split("ab","(?:(?-i)a)b",[caseless,
                                                                                                                                                                          {parts,
                                                                                                                                                                           2}]))),
    <<":">> = iolist_to_binary(join(re:split("ab","(?:(?-i)a)b",[caseless]))),
    <<":a">> = iolist_to_binary(join(re:split("ab","((?-i)a)b",[caseless,
                                                                                                                                                                    trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("ab","((?-i)a)b",[caseless,
                                                                                                                                                                      {parts,
                                                                                                                                                                       2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("ab","((?-i)a)b",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("aB","(?:(?-i)a)b",[caseless,
                                                                                                                                                                        trim]))),
    <<":">> = iolist_to_binary(join(re:split("aB","(?:(?-i)a)b",[caseless,
                                                                                                                                                                          {parts,
                                                                                                                                                                           2}]))),
    <<":">> = iolist_to_binary(join(re:split("aB","(?:(?-i)a)b",[caseless]))),
    <<":a">> = iolist_to_binary(join(re:split("aB","((?-i)a)b",[caseless,
                                                                                                                                                                    trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aB","((?-i)a)b",[caseless,
                                                                                                                                                                      {parts,
                                                                                                                                                                       2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aB","((?-i)a)b",[caseless]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?:(?-i)a)b",[caseless,
                                                                                                                                                                                          trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?:(?-i)a)b",[caseless,
                                                                                                                                                                                            {parts,
                                                                                                                                                                                             2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?:(?-i)a)b",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("aB","(?:(?-i)a)b",[caseless,
                                                                                                                                                                        trim]))),
    <<":">> = iolist_to_binary(join(re:split("aB","(?:(?-i)a)b",[caseless,
                                                                                                                                                                          {parts,
                                                                                                                                                                           2}]))),
    <<":">> = iolist_to_binary(join(re:split("aB","(?:(?-i)a)b",[caseless]))),
    <<"Ab">> = iolist_to_binary(join(re:split("Ab","(?:(?-i)a)b",[caseless,
                                                                                                                                                                        trim]))),
    <<"Ab">> = iolist_to_binary(join(re:split("Ab","(?:(?-i)a)b",[caseless,
                                                                                                                                                                          {parts,
                                                                                                                                                                           2}]))),
    <<"Ab">> = iolist_to_binary(join(re:split("Ab","(?:(?-i)a)b",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("aB","(?:(?-i)a)b",[caseless,
                                                                                                                                                                        trim]))),
    <<":">> = iolist_to_binary(join(re:split("aB","(?:(?-i)a)b",[caseless,
                                                                                                                                                                          {parts,
                                                                                                                                                                           2}]))),
    <<":">> = iolist_to_binary(join(re:split("aB","(?:(?-i)a)b",[caseless]))),
    <<":a">> = iolist_to_binary(join(re:split("aB","((?-i)a)b",[caseless,
                                                                                                                                                                    trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aB","((?-i)a)b",[caseless,
                                                                                                                                                                      {parts,
                                                                                                                                                                       2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aB","((?-i)a)b",[caseless]))),
    ok.
run28() ->
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?:(?-i)a)b",[caseless,
                                                                                                                                                                                          trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?:(?-i)a)b",[caseless,
                                                                                                                                                                                            {parts,
                                                                                                                                                                                             2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?:(?-i)a)b",[caseless]))),
    <<"Ab">> = iolist_to_binary(join(re:split("Ab","(?:(?-i)a)b",[caseless,
                                                                                                                                                                        trim]))),
    <<"Ab">> = iolist_to_binary(join(re:split("Ab","(?:(?-i)a)b",[caseless,
                                                                                                                                                                          {parts,
                                                                                                                                                                           2}]))),
    <<"Ab">> = iolist_to_binary(join(re:split("Ab","(?:(?-i)a)b",[caseless]))),
    <<"AB">> = iolist_to_binary(join(re:split("AB","(?:(?-i)a)b",[caseless,
                                                                                                                                                                        trim]))),
    <<"AB">> = iolist_to_binary(join(re:split("AB","(?:(?-i)a)b",[caseless,
                                                                                                                                                                          {parts,
                                                                                                                                                                           2}]))),
    <<"AB">> = iolist_to_binary(join(re:split("AB","(?:(?-i)a)b",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("ab","(?-i:a)b",[caseless,
                                                                                                                                                                  trim]))),
    <<":">> = iolist_to_binary(join(re:split("ab","(?-i:a)b",[caseless,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("ab","(?-i:a)b",[caseless]))),
    <<":a">> = iolist_to_binary(join(re:split("ab","((?-i:a))b",[caseless,
                                                                                                                                                                      trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("ab","((?-i:a))b",[caseless,
                                                                                                                                                                        {parts,
                                                                                                                                                                         2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("ab","((?-i:a))b",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("aB","(?-i:a)b",[caseless,
                                                                                                                                                                  trim]))),
    <<":">> = iolist_to_binary(join(re:split("aB","(?-i:a)b",[caseless,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("aB","(?-i:a)b",[caseless]))),
    <<":a">> = iolist_to_binary(join(re:split("aB","((?-i:a))b",[caseless,
                                                                                                                                                                      trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aB","((?-i:a))b",[caseless,
                                                                                                                                                                        {parts,
                                                                                                                                                                         2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aB","((?-i:a))b",[caseless]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?-i:a)b",[caseless,
                                                                                                                                                                                    trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?-i:a)b",[caseless,
                                                                                                                                                                                      {parts,
                                                                                                                                                                                       2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?-i:a)b",[caseless]))),
    <<"AB">> = iolist_to_binary(join(re:split("AB","(?-i:a)b",[caseless,
                                                                                                                                                                  trim]))),
    <<"AB">> = iolist_to_binary(join(re:split("AB","(?-i:a)b",[caseless,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<"AB">> = iolist_to_binary(join(re:split("AB","(?-i:a)b",[caseless]))),
    <<"Ab">> = iolist_to_binary(join(re:split("Ab","(?-i:a)b",[caseless,
                                                                                                                                                                  trim]))),
    <<"Ab">> = iolist_to_binary(join(re:split("Ab","(?-i:a)b",[caseless,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<"Ab">> = iolist_to_binary(join(re:split("Ab","(?-i:a)b",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("aB","(?-i:a)b",[caseless,
                                                                                                                                                                  trim]))),
    <<":">> = iolist_to_binary(join(re:split("aB","(?-i:a)b",[caseless,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("aB","(?-i:a)b",[caseless]))),
    <<":a">> = iolist_to_binary(join(re:split("aB","((?-i:a))b",[caseless,
                                                                                                                                                                      trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aB","((?-i:a))b",[caseless,
                                                                                                                                                                        {parts,
                                                                                                                                                                         2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aB","((?-i:a))b",[caseless]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?-i:a)b",[caseless,
                                                                                                                                                                                    trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?-i:a)b",[caseless,
                                                                                                                                                                                      {parts,
                                                                                                                                                                                       2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?-i:a)b",[caseless]))),
    <<"Ab">> = iolist_to_binary(join(re:split("Ab","(?-i:a)b",[caseless,
                                                                                                                                                                  trim]))),
    <<"Ab">> = iolist_to_binary(join(re:split("Ab","(?-i:a)b",[caseless,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<"Ab">> = iolist_to_binary(join(re:split("Ab","(?-i:a)b",[caseless]))),
    <<"AB">> = iolist_to_binary(join(re:split("AB","(?-i:a)b",[caseless,
                                                                                                                                                                  trim]))),
    <<"AB">> = iolist_to_binary(join(re:split("AB","(?-i:a)b",[caseless,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<"AB">> = iolist_to_binary(join(re:split("AB","(?-i:a)b",[caseless]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","((?-i:a.))b",[caseless,
                                                                                                                                                                                          trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","((?-i:a.))b",[caseless,
                                                                                                                                                                                            {parts,
                                                                                                                                                                                             2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","((?-i:a.))b",[caseless]))),
    <<"AB">> = iolist_to_binary(join(re:split("AB","((?-i:a.))b",[caseless,
                                                                                                                                                                        trim]))),
    <<"AB">> = iolist_to_binary(join(re:split("AB","((?-i:a.))b",[caseless,
                                                                                                                                                                          {parts,
                                                                                                                                                                           2}]))),
    <<"AB">> = iolist_to_binary(join(re:split("AB","((?-i:a.))b",[caseless]))),
    <<"a
B">> = iolist_to_binary(join(re:split("a
B","((?-i:a.))b",[caseless,trim]))),
    <<"a
B">> = iolist_to_binary(join(re:split("a
B","((?-i:a.))b",[caseless,{parts,2}]))),
    <<"a
B">> = iolist_to_binary(join(re:split("a
B","((?-i:a.))b",[caseless]))),
    <<":a
">> = iolist_to_binary(join(re:split("a
B","((?s-i:a.))b",[caseless,trim]))),
    <<":a
:">> = iolist_to_binary(join(re:split("a
B","((?s-i:a.))b",[caseless,{parts,2}]))),
    <<":a
:">> = iolist_to_binary(join(re:split("a
B","((?s-i:a.))b",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("cabbbb","(?:c|d)(?:)(?:a(?:)(?:b)(?:b(?:))(?:b(?:)(?:b)))",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("cabbbb","(?:c|d)(?:)(?:a(?:)(?:b)(?:b(?:))(?:b(?:)(?:b)))",[{parts,
                                                                                                                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("cabbbb","(?:c|d)(?:)(?:a(?:)(?:b)(?:b(?:))(?:b(?:)(?:b)))",[]))),
    <<"">> = iolist_to_binary(join(re:split("caaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb","(?:c|d)(?:)(?:aaaaaaaa(?:)(?:bbbbbbbb)(?:bbbbbbbb(?:))(?:bbbbbbbb(?:)(?:bbbbbbbb)))",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("caaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb","(?:c|d)(?:)(?:aaaaaaaa(?:)(?:bbbbbbbb)(?:bbbbbbbb(?:))(?:bbbbbbbb(?:)(?:bbbbbbbb)))",[{parts,
                                                                                                                                                                                                                                                                                                                                                                                                        2}]))),
    <<":">> = iolist_to_binary(join(re:split("caaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb","(?:c|d)(?:)(?:aaaaaaaa(?:)(?:bbbbbbbb)(?:bbbbbbbb(?:))(?:bbbbbbbb(?:)(?:bbbbbbbb)))",[]))),
    <<":Ab">> = iolist_to_binary(join(re:split("Ab4ab","(ab)\\d\\1",[caseless,
                                                                                                                                                                              trim]))),
    <<":Ab:">> = iolist_to_binary(join(re:split("Ab4ab","(ab)\\d\\1",[caseless,
                                                                                                                                                                                {parts,
                                                                                                                                                                                 2}]))),
    <<":Ab:">> = iolist_to_binary(join(re:split("Ab4ab","(ab)\\d\\1",[caseless]))),
    <<":ab">> = iolist_to_binary(join(re:split("ab4Ab","(ab)\\d\\1",[caseless,
                                                                                                                                                                              trim]))),
    <<":ab:">> = iolist_to_binary(join(re:split("ab4Ab","(ab)\\d\\1",[caseless,
                                                                                                                                                                                {parts,
                                                                                                                                                                                 2}]))),
    <<":ab:">> = iolist_to_binary(join(re:split("ab4Ab","(ab)\\d\\1",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("foobar1234baz","foo\\w*\\d{4}baz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("foobar1234baz","foo\\w*\\d{4}baz",[{parts,
                                                                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("foobar1234baz","foo\\w*\\d{4}baz",[]))),
    <<":~~">> = iolist_to_binary(join(re:split("x~~","x(~~)*(?:(?:F)?)?",[trim]))),
    <<":~~:">> = iolist_to_binary(join(re:split("x~~","x(~~)*(?:(?:F)?)?",[{parts,
                                                                                                                                                                                        2}]))),
    <<":~~:">> = iolist_to_binary(join(re:split("x~~","x(~~)*(?:(?:F)?)?",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaac","^a(?#xxx){3}c",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaac","^a(?#xxx){3}c",[{parts,
                                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaac","^a(?#xxx){3}c",[]))),
    ok.
run29() ->
    <<"">> = iolist_to_binary(join(re:split("aaac","^a (?#xxx) (?#yyy) {3}c",[extended,
                                                                                                                                                                                                    trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaac","^a (?#xxx) (?#yyy) {3}c",[extended,
                                                                                                                                                                                                      {parts,
                                                                                                                                                                                                       2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaac","^a (?#xxx) (?#yyy) {3}c",[extended]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<![cd])b",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<![cd])b",[{parts,
                                                                                                                                                                                          2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<![cd])b",[]))),
    <<"B
B">> = iolist_to_binary(join(re:split("B
B","(?<![cd])b",[trim]))),
    <<"B
B">> = iolist_to_binary(join(re:split("B
B","(?<![cd])b",[{parts,2}]))),
    <<"B
B">> = iolist_to_binary(join(re:split("B
B","(?<![cd])b",[]))),
    <<"dbcb">> = iolist_to_binary(join(re:split("dbcb","(?<![cd])b",[trim]))),
    <<"dbcb">> = iolist_to_binary(join(re:split("dbcb","(?<![cd])b",[{parts,
                                                                                                                                                                            2}]))),
    <<"dbcb">> = iolist_to_binary(join(re:split("dbcb","(?<![cd])b",[]))),
    <<"db::cb">> = iolist_to_binary(join(re:split("dbaacb","(?<![cd])[ab]",[trim]))),
    <<"db:acb">> = iolist_to_binary(join(re:split("dbaacb","(?<![cd])[ab]",[{parts,
                                                                                                                                                                                      2}]))),
    <<"db::cb">> = iolist_to_binary(join(re:split("dbaacb","(?<![cd])[ab]",[]))),
    <<"db::::cb">> = iolist_to_binary(join(re:split("dbaacb","(?<!(c|d))[ab]",[trim]))),
    <<"db::acb">> = iolist_to_binary(join(re:split("dbaacb","(?<!(c|d))[ab]",[{parts,
                                                                                                                                                                                        2}]))),
    <<"db::::cb">> = iolist_to_binary(join(re:split("dbaacb","(?<!(c|d))[ab]",[]))),
    <<"cdacc">> = iolist_to_binary(join(re:split("cdaccb","(?<!cd)[ab]",[trim]))),
    <<"cdacc:">> = iolist_to_binary(join(re:split("cdaccb","(?<!cd)[ab]",[{parts,
                                                                                                                                                                                  2}]))),
    <<"cdacc:">> = iolist_to_binary(join(re:split("cdaccb","(?<!cd)[ab]",[]))),
    <<"">> = iolist_to_binary(join(re:split("","^(?:a?b?)*$",[trim]))),
    <<"">> = iolist_to_binary(join(re:split("","^(?:a?b?)*$",[{parts,
                                                                                                                                                                       2}]))),
    <<"">> = iolist_to_binary(join(re:split("","^(?:a?b?)*$",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","^(?:a?b?)*$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a","^(?:a?b?)*$",[{parts,
                                                                                                                                                                         2}]))),
    <<":">> = iolist_to_binary(join(re:split("a","^(?:a?b?)*$",[]))),
    <<"">> = iolist_to_binary(join(re:split("ab","^(?:a?b?)*$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("ab","^(?:a?b?)*$",[{parts,
                                                                                                                                                                           2}]))),
    <<":">> = iolist_to_binary(join(re:split("ab","^(?:a?b?)*$",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaa","^(?:a?b?)*$",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaa","^(?:a?b?)*$",[{parts,
                                                                                                                                                                             2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaa","^(?:a?b?)*$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(?:a?b?)*$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(?:a?b?)*$",[{parts,
                                                                                                                                                                                             2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(?:a?b?)*$",[]))),
    <<"dbcb">> = iolist_to_binary(join(re:split("dbcb","^(?:a?b?)*$",[trim]))),
    <<"dbcb">> = iolist_to_binary(join(re:split("dbcb","^(?:a?b?)*$",[{parts,
                                                                                                                                                                               2}]))),
    <<"dbcb">> = iolist_to_binary(join(re:split("dbcb","^(?:a?b?)*$",[]))),
    <<"a--">> = iolist_to_binary(join(re:split("a--","^(?:a?b?)*$",[trim]))),
    <<"a--">> = iolist_to_binary(join(re:split("a--","^(?:a?b?)*$",[{parts,
                                                                                                                                                                             2}]))),
    <<"a--">> = iolist_to_binary(join(re:split("a--","^(?:a?b?)*$",[]))),
    <<"aa--">> = iolist_to_binary(join(re:split("aa--","^(?:a?b?)*$",[trim]))),
    <<"aa--">> = iolist_to_binary(join(re:split("aa--","^(?:a?b?)*$",[{parts,
                                                                                                                                                                               2}]))),
    <<"aa--">> = iolist_to_binary(join(re:split("aa--","^(?:a?b?)*$",[]))),
    <<":a
:
:b:
c">> = iolist_to_binary(join(re:split("a
b
c","((?s)^a(.))((?m)^b$)",[trim]))),
    <<":a
:
:b:
c">> = iolist_to_binary(join(re:split("a
b
c","((?s)^a(.))((?m)^b$)",[{parts,2}]))),
    <<":a
:
:b:
c">> = iolist_to_binary(join(re:split("a
b
c","((?s)^a(.))((?m)^b$)",[]))),
    <<"a
:b:
c">> = iolist_to_binary(join(re:split("a
b
c","((?m)^b$)",[trim]))),
    <<"a
:b:
c">> = iolist_to_binary(join(re:split("a
b
c","((?m)^b$)",[{parts,2}]))),
    <<"a
:b:
c">> = iolist_to_binary(join(re:split("a
b
c","((?m)^b$)",[]))),
    <<"a
">> = iolist_to_binary(join(re:split("a
b","(?m)^b",[trim]))),
    <<"a
:">> = iolist_to_binary(join(re:split("a
b","(?m)^b",[{parts,2}]))),
    <<"a
:">> = iolist_to_binary(join(re:split("a
b","(?m)^b",[]))),
    <<"a
:b">> = iolist_to_binary(join(re:split("a
b","(?m)^(b)",[trim]))),
    <<"a
:b:">> = iolist_to_binary(join(re:split("a
b","(?m)^(b)",[{parts,2}]))),
    <<"a
:b:">> = iolist_to_binary(join(re:split("a
b","(?m)^(b)",[]))),
    <<"a
:b">> = iolist_to_binary(join(re:split("a
b","((?m)^b)",[trim]))),
    <<"a
:b:">> = iolist_to_binary(join(re:split("a
b","((?m)^b)",[{parts,2}]))),
    <<"a
:b:">> = iolist_to_binary(join(re:split("a
b","((?m)^b)",[]))),
    <<"a:b">> = iolist_to_binary(join(re:split("a
b","\\n((?m)^b)",[trim]))),
    <<"a:b:">> = iolist_to_binary(join(re:split("a
b","\\n((?m)^b)",[{parts,2}]))),
    <<"a:b:">> = iolist_to_binary(join(re:split("a
b","\\n((?m)^b)",[]))),
    <<"a
b:
">> = iolist_to_binary(join(re:split("a
b
c","((?s).)c(?!.)",[trim]))),
    <<"a
b:
:">> = iolist_to_binary(join(re:split("a
b
c","((?s).)c(?!.)",[{parts,2}]))),
    <<"a
b:
:">> = iolist_to_binary(join(re:split("a
b
c","((?s).)c(?!.)",[]))),
    <<"a
b:
">> = iolist_to_binary(join(re:split("a
b
c","((?s).)c(?!.)",[trim]))),
    <<"a
b:
:">> = iolist_to_binary(join(re:split("a
b
c","((?s).)c(?!.)",[{parts,2}]))),
    <<"a
b:
:">> = iolist_to_binary(join(re:split("a
b
c","((?s).)c(?!.)",[]))),
    <<"a
:b
">> = iolist_to_binary(join(re:split("a
b
c","((?s)b.)c(?!.)",[trim]))),
    <<"a
:b
:">> = iolist_to_binary(join(re:split("a
b
c","((?s)b.)c(?!.)",[{parts,2}]))),
    <<"a
:b
:">> = iolist_to_binary(join(re:split("a
b
c","((?s)b.)c(?!.)",[]))),
    <<"a
:b
">> = iolist_to_binary(join(re:split("a
b
c","((?s)b.)c(?!.)",[trim]))),
    <<"a
:b
:">> = iolist_to_binary(join(re:split("a
b
c","((?s)b.)c(?!.)",[{parts,2}]))),
    <<"a
:b
:">> = iolist_to_binary(join(re:split("a
b
c","((?s)b.)c(?!.)",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","()^b",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","()^b",[{parts,
                                                                                                                                                                              2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","()^b",[]))),
    <<"a
b
c">> = iolist_to_binary(join(re:split("a
b
c","()^b",[trim]))),
    <<"a
b
c">> = iolist_to_binary(join(re:split("a
b
c","()^b",[{parts,2}]))),
    <<"a
b
c">> = iolist_to_binary(join(re:split("a
b
c","()^b",[]))),
    <<"a
b
c">> = iolist_to_binary(join(re:split("a
b
c","()^b",[trim]))),
    <<"a
b
c">> = iolist_to_binary(join(re:split("a
b
c","()^b",[{parts,2}]))),
    <<"a
b
c">> = iolist_to_binary(join(re:split("a
b
c","()^b",[]))),
    <<"a
:b:
c">> = iolist_to_binary(join(re:split("a
b
c","((?m)^b)",[trim]))),
    <<"a
:b:
c">> = iolist_to_binary(join(re:split("a
b
c","((?m)^b)",[{parts,2}]))),
    <<"a
:b:
c">> = iolist_to_binary(join(re:split("a
b
c","((?m)^b)",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(x)?(?(1)a|b)",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(x)?(?(1)a|b)",[{parts,
                                                                                                                                                                                                2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(x)?(?(1)a|b)",[]))),
    <<"a">> = iolist_to_binary(join(re:split("a","(x)?(?(1)a|b)",[trim]))),
    <<"a">> = iolist_to_binary(join(re:split("a","(x)?(?(1)a|b)",[{parts,
                                                                                                                                                                            2}]))),
    <<"a">> = iolist_to_binary(join(re:split("a","(x)?(?(1)a|b)",[]))),
    <<"a">> = iolist_to_binary(join(re:split("a","(x)?(?(1)a|b)",[trim]))),
    <<"a">> = iolist_to_binary(join(re:split("a","(x)?(?(1)a|b)",[{parts,
                                                                                                                                                                            2}]))),
    <<"a">> = iolist_to_binary(join(re:split("a","(x)?(?(1)a|b)",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","(x)?(?(1)b|a)",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("a","(x)?(?(1)b|a)",[{parts,
                                                                                                                                                                            2}]))),
    <<"::">> = iolist_to_binary(join(re:split("a","(x)?(?(1)b|a)",[]))),
    ok.
run30() ->
    <<"">> = iolist_to_binary(join(re:split("a","()?(?(1)b|a)",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("a","()?(?(1)b|a)",[{parts,
                                                                                                                                                                          2}]))),
    <<"::">> = iolist_to_binary(join(re:split("a","()?(?(1)b|a)",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","()?(?(1)a|b)",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("a","()?(?(1)a|b)",[{parts,
                                                                                                                                                                          2}]))),
    <<"::">> = iolist_to_binary(join(re:split("a","()?(?(1)a|b)",[]))),
    <<":(:)">> = iolist_to_binary(join(re:split("(blah)","^(\\()?blah(?(1)(\\)))$",[trim]))),
    <<":(:):">> = iolist_to_binary(join(re:split("(blah)","^(\\()?blah(?(1)(\\)))$",[{parts,
                                                                                                                                                                                                             2}]))),
    <<":(:):">> = iolist_to_binary(join(re:split("(blah)","^(\\()?blah(?(1)(\\)))$",[]))),
    <<"">> = iolist_to_binary(join(re:split("blah","^(\\()?blah(?(1)(\\)))$",[trim]))),
    <<":::">> = iolist_to_binary(join(re:split("blah","^(\\()?blah(?(1)(\\)))$",[{parts,
                                                                                                                                                                                                         2}]))),
    <<":::">> = iolist_to_binary(join(re:split("blah","^(\\()?blah(?(1)(\\)))$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(\\()?blah(?(1)(\\)))$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(\\()?blah(?(1)(\\)))$",[{parts,
                                                                                                                                                                                                                       2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(\\()?blah(?(1)(\\)))$",[]))),
    <<"a">> = iolist_to_binary(join(re:split("a","^(\\()?blah(?(1)(\\)))$",[trim]))),
    <<"a">> = iolist_to_binary(join(re:split("a","^(\\()?blah(?(1)(\\)))$",[{parts,
                                                                                                                                                                                                   2}]))),
    <<"a">> = iolist_to_binary(join(re:split("a","^(\\()?blah(?(1)(\\)))$",[]))),
    <<"blah)">> = iolist_to_binary(join(re:split("blah)","^(\\()?blah(?(1)(\\)))$",[trim]))),
    <<"blah)">> = iolist_to_binary(join(re:split("blah)","^(\\()?blah(?(1)(\\)))$",[{parts,
                                                                                                                                                                                                           2}]))),
    <<"blah)">> = iolist_to_binary(join(re:split("blah)","^(\\()?blah(?(1)(\\)))$",[]))),
    <<"(blah">> = iolist_to_binary(join(re:split("(blah","^(\\()?blah(?(1)(\\)))$",[trim]))),
    <<"(blah">> = iolist_to_binary(join(re:split("(blah","^(\\()?blah(?(1)(\\)))$",[{parts,
                                                                                                                                                                                                           2}]))),
    <<"(blah">> = iolist_to_binary(join(re:split("(blah","^(\\()?blah(?(1)(\\)))$",[]))),
    <<":(:)">> = iolist_to_binary(join(re:split("(blah)","^(\\(+)?blah(?(1)(\\)))$",[trim]))),
    <<":(:):">> = iolist_to_binary(join(re:split("(blah)","^(\\(+)?blah(?(1)(\\)))$",[{parts,
                                                                                                                                                                                                               2}]))),
    <<":(:):">> = iolist_to_binary(join(re:split("(blah)","^(\\(+)?blah(?(1)(\\)))$",[]))),
    <<"">> = iolist_to_binary(join(re:split("blah","^(\\(+)?blah(?(1)(\\)))$",[trim]))),
    <<":::">> = iolist_to_binary(join(re:split("blah","^(\\(+)?blah(?(1)(\\)))$",[{parts,
                                                                                                                                                                                                           2}]))),
    <<":::">> = iolist_to_binary(join(re:split("blah","^(\\(+)?blah(?(1)(\\)))$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(\\(+)?blah(?(1)(\\)))$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(\\(+)?blah(?(1)(\\)))$",[{parts,
                                                                                                                                                                                                                         2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(\\(+)?blah(?(1)(\\)))$",[]))),
    <<"blah)">> = iolist_to_binary(join(re:split("blah)","^(\\(+)?blah(?(1)(\\)))$",[trim]))),
    <<"blah)">> = iolist_to_binary(join(re:split("blah)","^(\\(+)?blah(?(1)(\\)))$",[{parts,
                                                                                                                                                                                                             2}]))),
    <<"blah)">> = iolist_to_binary(join(re:split("blah)","^(\\(+)?blah(?(1)(\\)))$",[]))),
    <<"(blah">> = iolist_to_binary(join(re:split("(blah","^(\\(+)?blah(?(1)(\\)))$",[trim]))),
    <<"(blah">> = iolist_to_binary(join(re:split("(blah","^(\\(+)?blah(?(1)(\\)))$",[{parts,
                                                                                                                                                                                                             2}]))),
    <<"(blah">> = iolist_to_binary(join(re:split("(blah","^(\\(+)?blah(?(1)(\\)))$",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","(?(?!a)b|a)",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a","(?(?!a)b|a)",[{parts,
                                                                                                                                                                        2}]))),
    <<":">> = iolist_to_binary(join(re:split("a","(?(?!a)b|a)",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?(?=a)b|a)",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?(?=a)b|a)",[{parts,
                                                                                                                                                                                            2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?(?=a)b|a)",[]))),
    <<"a">> = iolist_to_binary(join(re:split("a","(?(?=a)b|a)",[trim]))),
    <<"a">> = iolist_to_binary(join(re:split("a","(?(?=a)b|a)",[{parts,
                                                                                                                                                                        2}]))),
    <<"a">> = iolist_to_binary(join(re:split("a","(?(?=a)b|a)",[]))),
    <<"a">> = iolist_to_binary(join(re:split("a","(?(?=a)b|a)",[trim]))),
    <<"a">> = iolist_to_binary(join(re:split("a","(?(?=a)b|a)",[{parts,
                                                                                                                                                                        2}]))),
    <<"a">> = iolist_to_binary(join(re:split("a","(?(?=a)b|a)",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","(?(?=a)a|b)",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a","(?(?=a)a|b)",[{parts,
                                                                                                                                                                        2}]))),
    <<":">> = iolist_to_binary(join(re:split("a","(?(?=a)a|b)",[]))),
    <<"a:a:aab">> = iolist_to_binary(join(re:split("aaab","(?=(a+?))(\\1ab)",[trim]))),
    <<"a:a:aab:">> = iolist_to_binary(join(re:split("aaab","(?=(a+?))(\\1ab)",[{parts,
                                                                                                                                                                                         2}]))),
    <<"a:a:aab:">> = iolist_to_binary(join(re:split("aaab","(?=(a+?))(\\1ab)",[]))),
    <<":one:">> = iolist_to_binary(join(re:split("one:","(\\w+:)+",[trim]))),
    <<":one::">> = iolist_to_binary(join(re:split("one:","(\\w+:)+",[{parts,
                                                                                                                                                                         2}]))),
    <<":one::">> = iolist_to_binary(join(re:split("one:","(\\w+:)+",[]))),
    <<"a:a">> = iolist_to_binary(join(re:split("a","$(?<=^(a))",[trim]))),
    <<"a:a:">> = iolist_to_binary(join(re:split("a","$(?<=^(a))",[{parts,
                                                                                                                                                                       2}]))),
    <<"a:a:">> = iolist_to_binary(join(re:split("a","$(?<=^(a))",[]))),
    <<"a:a:aab">> = iolist_to_binary(join(re:split("aaab","(?=(a+?))(\\1ab)",[trim]))),
    <<"a:a:aab:">> = iolist_to_binary(join(re:split("aaab","(?=(a+?))(\\1ab)",[{parts,
                                                                                                                                                                                         2}]))),
    <<"a:a:aab:">> = iolist_to_binary(join(re:split("aaab","(?=(a+?))(\\1ab)",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(?=(a+?))\\1ab",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(?=(a+?))\\1ab",[{parts,
                                                                                                                                                                                                     2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(?=(a+?))\\1ab",[]))),
    <<"aaab">> = iolist_to_binary(join(re:split("aaab","^(?=(a+?))\\1ab",[trim]))),
    <<"aaab">> = iolist_to_binary(join(re:split("aaab","^(?=(a+?))\\1ab",[{parts,
                                                                                                                                                                                       2}]))),
    <<"aaab">> = iolist_to_binary(join(re:split("aaab","^(?=(a+?))\\1ab",[]))),
    <<"aaab">> = iolist_to_binary(join(re:split("aaab","^(?=(a+?))\\1ab",[trim]))),
    <<"aaab">> = iolist_to_binary(join(re:split("aaab","^(?=(a+?))\\1ab",[{parts,
                                                                                                                                                                                       2}]))),
    <<"aaab">> = iolist_to_binary(join(re:split("aaab","^(?=(a+?))\\1ab",[]))),
    <<"::abcd">> = iolist_to_binary(join(re:split("abcd","([\\w:]+::)?(\\w+)$",[trim]))),
    <<"::abcd:">> = iolist_to_binary(join(re:split("abcd","([\\w:]+::)?(\\w+)$",[{parts,
                                                                                                                                                                                                 2}]))),
    <<"::abcd:">> = iolist_to_binary(join(re:split("abcd","([\\w:]+::)?(\\w+)$",[]))),
    <<":xy:z::::abcd">> = iolist_to_binary(join(re:split("xy:z:::abcd","([\\w:]+::)?(\\w+)$",[trim]))),
    <<":xy:z::::abcd:">> = iolist_to_binary(join(re:split("xy:z:::abcd","([\\w:]+::)?(\\w+)$",[{parts,
                                                                                                                                                                                                               2}]))),
    <<":xy:z::::abcd:">> = iolist_to_binary(join(re:split("xy:z:::abcd","([\\w:]+::)?(\\w+)$",[]))),
    <<":c:d">> = iolist_to_binary(join(re:split("aexycd","^[^bcd]*(c+)",[trim]))),
    <<":c:d">> = iolist_to_binary(join(re:split("aexycd","^[^bcd]*(c+)",[{parts,
                                                                                                                                                                                    2}]))),
    <<":c:d">> = iolist_to_binary(join(re:split("aexycd","^[^bcd]*(c+)",[]))),
    <<"c:aa">> = iolist_to_binary(join(re:split("caab","(a*)b+",[trim]))),
    <<"c:aa:">> = iolist_to_binary(join(re:split("caab","(a*)b+",[{parts,
                                                                                                                                                                    2}]))),
    <<"c:aa:">> = iolist_to_binary(join(re:split("caab","(a*)b+",[]))),
    <<"::abcd">> = iolist_to_binary(join(re:split("abcd","([\\w:]+::)?(\\w+)$",[trim]))),
    <<"::abcd:">> = iolist_to_binary(join(re:split("abcd","([\\w:]+::)?(\\w+)$",[{parts,
                                                                                                                                                                                                 2}]))),
    <<"::abcd:">> = iolist_to_binary(join(re:split("abcd","([\\w:]+::)?(\\w+)$",[]))),
    <<":xy:z::::abcd">> = iolist_to_binary(join(re:split("xy:z:::abcd","([\\w:]+::)?(\\w+)$",[trim]))),
    <<":xy:z::::abcd:">> = iolist_to_binary(join(re:split("xy:z:::abcd","([\\w:]+::)?(\\w+)$",[{parts,
                                                                                                                                                                                                               2}]))),
    <<":xy:z::::abcd:">> = iolist_to_binary(join(re:split("xy:z:::abcd","([\\w:]+::)?(\\w+)$",[]))),
    <<"*** ::Failers">> = iolist_to_binary(join(re:split("*** Failers","([\\w:]+::)?(\\w+)$",[trim]))),
    <<"*** ::Failers:">> = iolist_to_binary(join(re:split("*** Failers","([\\w:]+::)?(\\w+)$",[{parts,
                                                                                                                                                                                                               2}]))),
    <<"*** ::Failers:">> = iolist_to_binary(join(re:split("*** Failers","([\\w:]+::)?(\\w+)$",[]))),
    <<"abcd:">> = iolist_to_binary(join(re:split("abcd:","([\\w:]+::)?(\\w+)$",[trim]))),
    <<"abcd:">> = iolist_to_binary(join(re:split("abcd:","([\\w:]+::)?(\\w+)$",[{parts,
                                                                                                                                                                                                   2}]))),
    <<"abcd:">> = iolist_to_binary(join(re:split("abcd:","([\\w:]+::)?(\\w+)$",[]))),
    <<"abcd:">> = iolist_to_binary(join(re:split("abcd:","([\\w:]+::)?(\\w+)$",[trim]))),
    <<"abcd:">> = iolist_to_binary(join(re:split("abcd:","([\\w:]+::)?(\\w+)$",[{parts,
                                                                                                                                                                                                   2}]))),
    <<"abcd:">> = iolist_to_binary(join(re:split("abcd:","([\\w:]+::)?(\\w+)$",[]))),
    <<":c:d">> = iolist_to_binary(join(re:split("aexycd","^[^bcd]*(c+)",[trim]))),
    <<":c:d">> = iolist_to_binary(join(re:split("aexycd","^[^bcd]*(c+)",[{parts,
                                                                                                                                                                                    2}]))),
    <<":c:d">> = iolist_to_binary(join(re:split("aexycd","^[^bcd]*(c+)",[]))),
    ok.
run31() ->
    <<"">> = iolist_to_binary(join(re:split("aaab","(?>a+)b",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaab","(?>a+)b",[{parts,
                                                                                                                                                                      2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaab","(?>a+)b",[]))),
    <<"a::[:b]::">> = iolist_to_binary(join(re:split("a:[b]:","([[:]+)",[trim]))),
    <<"a::[:b]:">> = iolist_to_binary(join(re:split("a:[b]:","([[:]+)",[{parts,
                                                                                                                                                                          2}]))),
    <<"a::[:b]:::">> = iolist_to_binary(join(re:split("a:[b]:","([[:]+)",[]))),
    <<"a:=[:b]:=">> = iolist_to_binary(join(re:split("a=[b]=","([[=]+)",[trim]))),
    <<"a:=[:b]=">> = iolist_to_binary(join(re:split("a=[b]=","([[=]+)",[{parts,
                                                                                                                                                                          2}]))),
    <<"a:=[:b]:=:">> = iolist_to_binary(join(re:split("a=[b]=","([[=]+)",[]))),
    <<"a:.[:b]:.">> = iolist_to_binary(join(re:split("a.[b].","([[.]+)",[trim]))),
    <<"a:.[:b].">> = iolist_to_binary(join(re:split("a.[b].","([[.]+)",[{parts,
                                                                                                                                                                          2}]))),
    <<"a:.[:b]:.:">> = iolist_to_binary(join(re:split("a.[b].","([[.]+)",[]))),
    <<":aaab">> = iolist_to_binary(join(re:split("aaab","((?>a+)b)",[trim]))),
    <<":aaab:">> = iolist_to_binary(join(re:split("aaab","((?>a+)b)",[{parts,
                                                                                                                                                                          2}]))),
    <<":aaab:">> = iolist_to_binary(join(re:split("aaab","((?>a+)b)",[]))),
    <<":aaa">> = iolist_to_binary(join(re:split("aaab","(?>(a+))b",[trim]))),
    <<":aaa:">> = iolist_to_binary(join(re:split("aaab","(?>(a+))b",[{parts,
                                                                                                                                                                          2}]))),
    <<":aaa:">> = iolist_to_binary(join(re:split("aaab","(?>(a+))b",[]))),
    <<"((:x">> = iolist_to_binary(join(re:split("((abc(ade)ufh()()x","((?>[^()]+)|\\([^()]*\\))+",[trim]))),
    <<"((:x:">> = iolist_to_binary(join(re:split("((abc(ade)ufh()()x","((?>[^()]+)|\\([^()]*\\))+",[{parts,
                                                                                                                                                                                                                                          2}]))),
    <<"((:x:">> = iolist_to_binary(join(re:split("((abc(ade)ufh()()x","((?>[^()]+)|\\([^()]*\\))+",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a\\Z",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a\\Z",[{parts,
                                                                                                                                                                               2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a\\Z",[]))),
    <<"aaab">> = iolist_to_binary(join(re:split("aaab","a\\Z",[trim]))),
    <<"aaab">> = iolist_to_binary(join(re:split("aaab","a\\Z",[{parts,
                                                                                                                                                                 2}]))),
    <<"aaab">> = iolist_to_binary(join(re:split("aaab","a\\Z",[]))),
    <<"a
b">> = iolist_to_binary(join(re:split("a
b","a\\Z",[trim]))),
    <<"a
b">> = iolist_to_binary(join(re:split("a
b","a\\Z",[{parts,2}]))),
    <<"a
b">> = iolist_to_binary(join(re:split("a
b","a\\Z",[]))),
    <<"a
">> = iolist_to_binary(join(re:split("a
b","b\\Z",[trim]))),
    <<"a
:">> = iolist_to_binary(join(re:split("a
b","b\\Z",[{parts,2}]))),
    <<"a
:">> = iolist_to_binary(join(re:split("a
b","b\\Z",[]))),
    <<"a
">> = iolist_to_binary(join(re:split("a
b","b\\Z",[trim]))),
    <<"a
:">> = iolist_to_binary(join(re:split("a
b","b\\Z",[{parts,2}]))),
    <<"a
:">> = iolist_to_binary(join(re:split("a
b","b\\Z",[]))),
    <<"a
">> = iolist_to_binary(join(re:split("a
b","b\\z",[trim]))),
    <<"a
:">> = iolist_to_binary(join(re:split("a
b","b\\z",[{parts,2}]))),
    <<"a
:">> = iolist_to_binary(join(re:split("a
b","b\\z",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","b\\z",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","b\\z",[{parts,
                                                                                                                                                                               2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","b\\z",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("a","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[{parts,
                                                                                                                                                                                                                                                      2}]))),
    <<"::">> = iolist_to_binary(join(re:split("a","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("abc","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[{parts,
                                                                                                                                                                                                                                                          2}]))),
    <<"::">> = iolist_to_binary(join(re:split("abc","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("a-b","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("a-b","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[{parts,
                                                                                                                                                                                                                                                          2}]))),
    <<"::">> = iolist_to_binary(join(re:split("a-b","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("0-9","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("0-9","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[{parts,
                                                                                                                                                                                                                                                          2}]))),
    <<"::">> = iolist_to_binary(join(re:split("0-9","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("a.b","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("a.b","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[{parts,
                                                                                                                                                                                                                                                          2}]))),
    <<"::">> = iolist_to_binary(join(re:split("a.b","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("5.6.7","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("5.6.7","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[{parts,
                                                                                                                                                                                                                                                              2}]))),
    <<"::">> = iolist_to_binary(join(re:split("5.6.7","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("the.quick.brown.fox","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("the.quick.brown.fox","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[{parts,
                                                                                                                                                                                                                                                                                          2}]))),
    <<"::">> = iolist_to_binary(join(re:split("the.quick.brown.fox","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("a100.b200.300c","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("a100.b200.300c","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[{parts,
                                                                                                                                                                                                                                                                                2}]))),
    <<"::">> = iolist_to_binary(join(re:split("a100.b200.300c","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("12-ab.1245","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("12-ab.1245","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[{parts,
                                                                                                                                                                                                                                                                        2}]))),
    <<"::">> = iolist_to_binary(join(re:split("12-ab.1245","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[{parts,
                                                                                                                                                                                                                                                                          2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[]))),
    <<"">> = iolist_to_binary(join(re:split("","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[trim]))),
    <<"">> = iolist_to_binary(join(re:split("","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[{parts,
                                                                                                                                                                                                                                                    2}]))),
    <<"">> = iolist_to_binary(join(re:split("","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[]))),
    <<".a">> = iolist_to_binary(join(re:split(".a","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[trim]))),
    <<".a">> = iolist_to_binary(join(re:split(".a","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[{parts,
                                                                                                                                                                                                                                                        2}]))),
    <<".a">> = iolist_to_binary(join(re:split(".a","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[]))),
    <<"-a">> = iolist_to_binary(join(re:split("-a","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[trim]))),
    <<"-a">> = iolist_to_binary(join(re:split("-a","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[{parts,
                                                                                                                                                                                                                                                        2}]))),
    <<"-a">> = iolist_to_binary(join(re:split("-a","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[]))),
    <<"a-">> = iolist_to_binary(join(re:split("a-","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[trim]))),
    <<"a-">> = iolist_to_binary(join(re:split("a-","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[{parts,
                                                                                                                                                                                                                                                        2}]))),
    <<"a-">> = iolist_to_binary(join(re:split("a-","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[]))),
    <<"a.">> = iolist_to_binary(join(re:split("a.","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[trim]))),
    <<"a.">> = iolist_to_binary(join(re:split("a.","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[{parts,
                                                                                                                                                                                                                                                        2}]))),
    <<"a.">> = iolist_to_binary(join(re:split("a.","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[]))),
    <<"a_b">> = iolist_to_binary(join(re:split("a_b","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[trim]))),
    <<"a_b">> = iolist_to_binary(join(re:split("a_b","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[{parts,
                                                                                                                                                                                                                                                          2}]))),
    <<"a_b">> = iolist_to_binary(join(re:split("a_b","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[]))),
    <<"a.-">> = iolist_to_binary(join(re:split("a.-","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[trim]))),
    <<"a.-">> = iolist_to_binary(join(re:split("a.-","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[{parts,
                                                                                                                                                                                                                                                          2}]))),
    <<"a.-">> = iolist_to_binary(join(re:split("a.-","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[]))),
    <<"a..">> = iolist_to_binary(join(re:split("a..","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[trim]))),
    <<"a..">> = iolist_to_binary(join(re:split("a..","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[{parts,
                                                                                                                                                                                                                                                          2}]))),
    <<"a..">> = iolist_to_binary(join(re:split("a..","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[]))),
    <<"ab..bc">> = iolist_to_binary(join(re:split("ab..bc","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[trim]))),
    <<"ab..bc">> = iolist_to_binary(join(re:split("ab..bc","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[{parts,
                                                                                                                                                                                                                                                                2}]))),
    <<"ab..bc">> = iolist_to_binary(join(re:split("ab..bc","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[]))),
    <<"the.quick.brown.fox-">> = iolist_to_binary(join(re:split("the.quick.brown.fox-","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[trim]))),
    <<"the.quick.brown.fox-">> = iolist_to_binary(join(re:split("the.quick.brown.fox-","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[{parts,
                                                                                                                                                                                                                                                                                            2}]))),
    <<"the.quick.brown.fox-">> = iolist_to_binary(join(re:split("the.quick.brown.fox-","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[]))),
    <<"the.quick.brown.fox.">> = iolist_to_binary(join(re:split("the.quick.brown.fox.","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[trim]))),
    <<"the.quick.brown.fox.">> = iolist_to_binary(join(re:split("the.quick.brown.fox.","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[{parts,
                                                                                                                                                                                                                                                                                            2}]))),
    <<"the.quick.brown.fox.">> = iolist_to_binary(join(re:split("the.quick.brown.fox.","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[]))),
    <<"the.quick.brown.fox_">> = iolist_to_binary(join(re:split("the.quick.brown.fox_","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[trim]))),
    <<"the.quick.brown.fox_">> = iolist_to_binary(join(re:split("the.quick.brown.fox_","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[{parts,
                                                                                                                                                                                                                                                                                            2}]))),
    <<"the.quick.brown.fox_">> = iolist_to_binary(join(re:split("the.quick.brown.fox_","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[]))),
    <<"the.quick.brown.fox+">> = iolist_to_binary(join(re:split("the.quick.brown.fox+","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[trim]))),
    <<"the.quick.brown.fox+">> = iolist_to_binary(join(re:split("the.quick.brown.fox+","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[{parts,
                                                                                                                                                                                                                                                                                            2}]))),
    <<"the.quick.brown.fox+">> = iolist_to_binary(join(re:split("the.quick.brown.fox+","^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$",[]))),
    <<":abcd">> = iolist_to_binary(join(re:split("alphabetabcd","(?>.*)(?<=(abcd|wxyz))",[trim]))),
    <<":abcd:">> = iolist_to_binary(join(re:split("alphabetabcd","(?>.*)(?<=(abcd|wxyz))",[{parts,
                                                                                                                                                                                                                    2}]))),
    <<":abcd:">> = iolist_to_binary(join(re:split("alphabetabcd","(?>.*)(?<=(abcd|wxyz))",[]))),
    <<":wxyz">> = iolist_to_binary(join(re:split("endingwxyz","(?>.*)(?<=(abcd|wxyz))",[trim]))),
    <<":wxyz:">> = iolist_to_binary(join(re:split("endingwxyz","(?>.*)(?<=(abcd|wxyz))",[{parts,
                                                                                                                                                                                                                2}]))),
    <<":wxyz:">> = iolist_to_binary(join(re:split("endingwxyz","(?>.*)(?<=(abcd|wxyz))",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?>.*)(?<=(abcd|wxyz))",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?>.*)(?<=(abcd|wxyz))",[{parts,
                                                                                                                                                                                                                  2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?>.*)(?<=(abcd|wxyz))",[]))),
    <<"a rather long string that doesn't end with one of them">> = iolist_to_binary(join(re:split("a rather long string that doesn't end with one of them","(?>.*)(?<=(abcd|wxyz))",[trim]))),
    <<"a rather long string that doesn't end with one of them">> = iolist_to_binary(join(re:split("a rather long string that doesn't end with one of them","(?>.*)(?<=(abcd|wxyz))",[{parts,
                                                                                                                                                                                                                                                                                                                2}]))),
    <<"a rather long string that doesn't end with one of them">> = iolist_to_binary(join(re:split("a rather long string that doesn't end with one of them","(?>.*)(?<=(abcd|wxyz))",[]))),
    <<"">> = iolist_to_binary(join(re:split("word cat dog elephant mussel cow horse canary baboon snake shark otherword","word (?>(?:(?!otherword)[a-zA-Z0-9]+ ){0,30})otherword",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("word cat dog elephant mussel cow horse canary baboon snake shark otherword","word (?>(?:(?!otherword)[a-zA-Z0-9]+ ){0,30})otherword",[{parts,
                                                                                                                                                                                                                                                                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("word cat dog elephant mussel cow horse canary baboon snake shark otherword","word (?>(?:(?!otherword)[a-zA-Z0-9]+ ){0,30})otherword",[]))),
    <<"word cat dog elephant mussel cow horse canary baboon snake shark">> = iolist_to_binary(join(re:split("word cat dog elephant mussel cow horse canary baboon snake shark","word (?>(?:(?!otherword)[a-zA-Z0-9]+ ){0,30})otherword",[trim]))),
    <<"word cat dog elephant mussel cow horse canary baboon snake shark">> = iolist_to_binary(join(re:split("word cat dog elephant mussel cow horse canary baboon snake shark","word (?>(?:(?!otherword)[a-zA-Z0-9]+ ){0,30})otherword",[{parts,
                                                                                                                                                                                                                                                                                                                                                                                            2}]))),
    <<"word cat dog elephant mussel cow horse canary baboon snake shark">> = iolist_to_binary(join(re:split("word cat dog elephant mussel cow horse canary baboon snake shark","word (?>(?:(?!otherword)[a-zA-Z0-9]+ ){0,30})otherword",[]))),
    <<"word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I hope">> = iolist_to_binary(join(re:split("word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I hope","word (?>[a-zA-Z0-9]+ ){0,30}otherword",[trim]))),
    <<"word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I hope">> = iolist_to_binary(join(re:split("word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I hope","word (?>[a-zA-Z0-9]+ ){0,30}otherword",[{parts,
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                2}]))),
    <<"word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I hope">> = iolist_to_binary(join(re:split("word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I hope","word (?>[a-zA-Z0-9]+ ){0,30}otherword",[]))),
    <<"999">> = iolist_to_binary(join(re:split("999foo","(?<=\\d{3}(?!999))foo",[trim]))),
    <<"999:">> = iolist_to_binary(join(re:split("999foo","(?<=\\d{3}(?!999))foo",[{parts,
                                                                                                                                                                                                       2}]))),
    <<"999:">> = iolist_to_binary(join(re:split("999foo","(?<=\\d{3}(?!999))foo",[]))),
    <<"123999">> = iolist_to_binary(join(re:split("123999foo","(?<=\\d{3}(?!999))foo",[trim]))),
    <<"123999:">> = iolist_to_binary(join(re:split("123999foo","(?<=\\d{3}(?!999))foo",[{parts,
                                                                                                                                                                                                             2}]))),
    <<"123999:">> = iolist_to_binary(join(re:split("123999foo","(?<=\\d{3}(?!999))foo",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=\\d{3}(?!999))foo",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=\\d{3}(?!999))foo",[{parts,
                                                                                                                                                                                                                 2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=\\d{3}(?!999))foo",[]))),
    <<"123abcfoo">> = iolist_to_binary(join(re:split("123abcfoo","(?<=\\d{3}(?!999))foo",[trim]))),
    <<"123abcfoo">> = iolist_to_binary(join(re:split("123abcfoo","(?<=\\d{3}(?!999))foo",[{parts,
                                                                                                                                                                                                             2}]))),
    <<"123abcfoo">> = iolist_to_binary(join(re:split("123abcfoo","(?<=\\d{3}(?!999))foo",[]))),
    <<"999">> = iolist_to_binary(join(re:split("999foo","(?<=(?!...999)\\d{3})foo",[trim]))),
    <<"999:">> = iolist_to_binary(join(re:split("999foo","(?<=(?!...999)\\d{3})foo",[{parts,
                                                                                                                                                                                                             2}]))),
    <<"999:">> = iolist_to_binary(join(re:split("999foo","(?<=(?!...999)\\d{3})foo",[]))),
    <<"123999">> = iolist_to_binary(join(re:split("123999foo","(?<=(?!...999)\\d{3})foo",[trim]))),
    <<"123999:">> = iolist_to_binary(join(re:split("123999foo","(?<=(?!...999)\\d{3})foo",[{parts,
                                                                                                                                                                                                                   2}]))),
    <<"123999:">> = iolist_to_binary(join(re:split("123999foo","(?<=(?!...999)\\d{3})foo",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=(?!...999)\\d{3})foo",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=(?!...999)\\d{3})foo",[{parts,
                                                                                                                                                                                                                       2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=(?!...999)\\d{3})foo",[]))),
    <<"123abcfoo">> = iolist_to_binary(join(re:split("123abcfoo","(?<=(?!...999)\\d{3})foo",[trim]))),
    <<"123abcfoo">> = iolist_to_binary(join(re:split("123abcfoo","(?<=(?!...999)\\d{3})foo",[{parts,
                                                                                                                                                                                                                   2}]))),
    <<"123abcfoo">> = iolist_to_binary(join(re:split("123abcfoo","(?<=(?!...999)\\d{3})foo",[]))),
    <<"123abc">> = iolist_to_binary(join(re:split("123abcfoo","(?<=\\d{3}(?!999)...)foo",[trim]))),
    <<"123abc:">> = iolist_to_binary(join(re:split("123abcfoo","(?<=\\d{3}(?!999)...)foo",[{parts,
                                                                                                                                                                                                                   2}]))),
    <<"123abc:">> = iolist_to_binary(join(re:split("123abcfoo","(?<=\\d{3}(?!999)...)foo",[]))),
    <<"123456">> = iolist_to_binary(join(re:split("123456foo","(?<=\\d{3}(?!999)...)foo",[trim]))),
    <<"123456:">> = iolist_to_binary(join(re:split("123456foo","(?<=\\d{3}(?!999)...)foo",[{parts,
                                                                                                                                                                                                                   2}]))),
    <<"123456:">> = iolist_to_binary(join(re:split("123456foo","(?<=\\d{3}(?!999)...)foo",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=\\d{3}(?!999)...)foo",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=\\d{3}(?!999)...)foo",[{parts,
                                                                                                                                                                                                                       2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=\\d{3}(?!999)...)foo",[]))),
    <<"123999foo">> = iolist_to_binary(join(re:split("123999foo","(?<=\\d{3}(?!999)...)foo",[trim]))),
    <<"123999foo">> = iolist_to_binary(join(re:split("123999foo","(?<=\\d{3}(?!999)...)foo",[{parts,
                                                                                                                                                                                                                   2}]))),
    <<"123999foo">> = iolist_to_binary(join(re:split("123999foo","(?<=\\d{3}(?!999)...)foo",[]))),
    ok.
run32() ->
    <<"123abc">> = iolist_to_binary(join(re:split("123abcfoo","(?<=\\d{3}...)(?<!999)foo",[trim]))),
    <<"123abc:">> = iolist_to_binary(join(re:split("123abcfoo","(?<=\\d{3}...)(?<!999)foo",[{parts,
                                                                                                                                                                                                                     2}]))),
    <<"123abc:">> = iolist_to_binary(join(re:split("123abcfoo","(?<=\\d{3}...)(?<!999)foo",[]))),
    <<"123456">> = iolist_to_binary(join(re:split("123456foo","(?<=\\d{3}...)(?<!999)foo",[trim]))),
    <<"123456:">> = iolist_to_binary(join(re:split("123456foo","(?<=\\d{3}...)(?<!999)foo",[{parts,
                                                                                                                                                                                                                     2}]))),
    <<"123456:">> = iolist_to_binary(join(re:split("123456foo","(?<=\\d{3}...)(?<!999)foo",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=\\d{3}...)(?<!999)foo",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=\\d{3}...)(?<!999)foo",[{parts,
                                                                                                                                                                                                                         2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?<=\\d{3}...)(?<!999)foo",[]))),
    <<"123999foo">> = iolist_to_binary(join(re:split("123999foo","(?<=\\d{3}...)(?<!999)foo",[trim]))),
    <<"123999foo">> = iolist_to_binary(join(re:split("123999foo","(?<=\\d{3}...)(?<!999)foo",[{parts,
                                                                                                                                                                                                                     2}]))),
    <<"123999foo">> = iolist_to_binary(join(re:split("123999foo","(?<=\\d{3}...)(?<!999)foo",[]))),
    <<":::abcd: xyz">> = iolist_to_binary(join(re:split("<a href=abcd xyz","<a[\\s]+href[\\s]*=[\\s]*          # find <a href=
 ([\\\"\\'])?                       # find single or double quote
 (?(1) (.*?)\\1 | ([^\\s]+))       # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended,
                                                                              trim]))),
    <<":::abcd: xyz">> = iolist_to_binary(join(re:split("<a href=abcd xyz","<a[\\s]+href[\\s]*=[\\s]*          # find <a href=
 ([\\\"\\'])?                       # find single or double quote
 (?(1) (.*?)\\1 | ([^\\s]+))       # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended,
                                                                              {parts,
                                                                               2}]))),
    <<":::abcd: xyz">> = iolist_to_binary(join(re:split("<a href=abcd xyz","<a[\\s]+href[\\s]*=[\\s]*          # find <a href=
 ([\\\"\\'])?                       # find single or double quote
 (?(1) (.*?)\\1 | ([^\\s]+))       # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended]))),
    <<":\":abcd xyz pqr:: cats">> = iolist_to_binary(join(re:split("<a href=\"abcd xyz pqr\" cats","<a[\\s]+href[\\s]*=[\\s]*          # find <a href=
 ([\\\"\\'])?                       # find single or double quote
 (?(1) (.*?)\\1 | ([^\\s]+))       # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended,
                                                                              trim]))),
    <<":\":abcd xyz pqr:: cats">> = iolist_to_binary(join(re:split("<a href=\"abcd xyz pqr\" cats","<a[\\s]+href[\\s]*=[\\s]*          # find <a href=
 ([\\\"\\'])?                       # find single or double quote
 (?(1) (.*?)\\1 | ([^\\s]+))       # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended,
                                                                              {parts,
                                                                               2}]))),
    <<":\":abcd xyz pqr:: cats">> = iolist_to_binary(join(re:split("<a href=\"abcd xyz pqr\" cats","<a[\\s]+href[\\s]*=[\\s]*          # find <a href=
 ([\\\"\\'])?                       # find single or double quote
 (?(1) (.*?)\\1 | ([^\\s]+))       # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended]))),
    <<":':abcd xyz pqr:: cats">> = iolist_to_binary(join(re:split("<a href='abcd xyz pqr' cats","<a[\\s]+href[\\s]*=[\\s]*          # find <a href=
 ([\\\"\\'])?                       # find single or double quote
 (?(1) (.*?)\\1 | ([^\\s]+))       # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended,
                                                                              trim]))),
    <<":':abcd xyz pqr:: cats">> = iolist_to_binary(join(re:split("<a href='abcd xyz pqr' cats","<a[\\s]+href[\\s]*=[\\s]*          # find <a href=
 ([\\\"\\'])?                       # find single or double quote
 (?(1) (.*?)\\1 | ([^\\s]+))       # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended,
                                                                              {parts,
                                                                               2}]))),
    <<":':abcd xyz pqr:: cats">> = iolist_to_binary(join(re:split("<a href='abcd xyz pqr' cats","<a[\\s]+href[\\s]*=[\\s]*          # find <a href=
 ([\\\"\\'])?                       # find single or double quote
 (?(1) (.*?)\\1 | ([^\\s]+))       # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended]))),
    <<":::abcd: xyz">> = iolist_to_binary(join(re:split("<a href=abcd xyz","<a\\s+href\\s*=\\s*                # find <a href=
 ([\"'])?                         # find single or double quote
 (?(1) (.*?)\\1 | (\\S+))          # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended,
                                                                              trim]))),
    <<":::abcd: xyz">> = iolist_to_binary(join(re:split("<a href=abcd xyz","<a\\s+href\\s*=\\s*                # find <a href=
 ([\"'])?                         # find single or double quote
 (?(1) (.*?)\\1 | (\\S+))          # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended,
                                                                              {parts,
                                                                               2}]))),
    <<":::abcd: xyz">> = iolist_to_binary(join(re:split("<a href=abcd xyz","<a\\s+href\\s*=\\s*                # find <a href=
 ([\"'])?                         # find single or double quote
 (?(1) (.*?)\\1 | (\\S+))          # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended]))),
    <<":\":abcd xyz pqr:: cats">> = iolist_to_binary(join(re:split("<a href=\"abcd xyz pqr\" cats","<a\\s+href\\s*=\\s*                # find <a href=
 ([\"'])?                         # find single or double quote
 (?(1) (.*?)\\1 | (\\S+))          # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended,
                                                                              trim]))),
    <<":\":abcd xyz pqr:: cats">> = iolist_to_binary(join(re:split("<a href=\"abcd xyz pqr\" cats","<a\\s+href\\s*=\\s*                # find <a href=
 ([\"'])?                         # find single or double quote
 (?(1) (.*?)\\1 | (\\S+))          # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended,
                                                                              {parts,
                                                                               2}]))),
    <<":\":abcd xyz pqr:: cats">> = iolist_to_binary(join(re:split("<a href=\"abcd xyz pqr\" cats","<a\\s+href\\s*=\\s*                # find <a href=
 ([\"'])?                         # find single or double quote
 (?(1) (.*?)\\1 | (\\S+))          # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended]))),
    <<":':abcd xyz pqr:: cats">> = iolist_to_binary(join(re:split("<a href       =       'abcd xyz pqr' cats","<a\\s+href\\s*=\\s*                # find <a href=
 ([\"'])?                         # find single or double quote
 (?(1) (.*?)\\1 | (\\S+))          # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended,
                                                                              trim]))),
    <<":':abcd xyz pqr:: cats">> = iolist_to_binary(join(re:split("<a href       =       'abcd xyz pqr' cats","<a\\s+href\\s*=\\s*                # find <a href=
 ([\"'])?                         # find single or double quote
 (?(1) (.*?)\\1 | (\\S+))          # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended,
                                                                              {parts,
                                                                               2}]))),
    <<":':abcd xyz pqr:: cats">> = iolist_to_binary(join(re:split("<a href       =       'abcd xyz pqr' cats","<a\\s+href\\s*=\\s*                # find <a href=
 ([\"'])?                         # find single or double quote
 (?(1) (.*?)\\1 | (\\S+))          # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended]))),
    <<":::abcd: xyz">> = iolist_to_binary(join(re:split("<a href=abcd xyz","<a\\s+href(?>\\s*)=(?>\\s*)        # find <a href=
 ([\"'])?                         # find single or double quote
 (?(1) (.*?)\\1 | (\\S+))          # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended,
                                                                              trim]))),
    <<":::abcd: xyz">> = iolist_to_binary(join(re:split("<a href=abcd xyz","<a\\s+href(?>\\s*)=(?>\\s*)        # find <a href=
 ([\"'])?                         # find single or double quote
 (?(1) (.*?)\\1 | (\\S+))          # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended,
                                                                              {parts,
                                                                               2}]))),
    <<":::abcd: xyz">> = iolist_to_binary(join(re:split("<a href=abcd xyz","<a\\s+href(?>\\s*)=(?>\\s*)        # find <a href=
 ([\"'])?                         # find single or double quote
 (?(1) (.*?)\\1 | (\\S+))          # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended]))),
    <<":\":abcd xyz pqr:: cats">> = iolist_to_binary(join(re:split("<a href=\"abcd xyz pqr\" cats","<a\\s+href(?>\\s*)=(?>\\s*)        # find <a href=
 ([\"'])?                         # find single or double quote
 (?(1) (.*?)\\1 | (\\S+))          # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended,
                                                                              trim]))),
    <<":\":abcd xyz pqr:: cats">> = iolist_to_binary(join(re:split("<a href=\"abcd xyz pqr\" cats","<a\\s+href(?>\\s*)=(?>\\s*)        # find <a href=
 ([\"'])?                         # find single or double quote
 (?(1) (.*?)\\1 | (\\S+))          # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended,
                                                                              {parts,
                                                                               2}]))),
    <<":\":abcd xyz pqr:: cats">> = iolist_to_binary(join(re:split("<a href=\"abcd xyz pqr\" cats","<a\\s+href(?>\\s*)=(?>\\s*)        # find <a href=
 ([\"'])?                         # find single or double quote
 (?(1) (.*?)\\1 | (\\S+))          # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended]))),
    <<":':abcd xyz pqr:: cats">> = iolist_to_binary(join(re:split("<a href       =       'abcd xyz pqr' cats","<a\\s+href(?>\\s*)=(?>\\s*)        # find <a href=
 ([\"'])?                         # find single or double quote
 (?(1) (.*?)\\1 | (\\S+))          # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended,
                                                                              trim]))),
    <<":':abcd xyz pqr:: cats">> = iolist_to_binary(join(re:split("<a href       =       'abcd xyz pqr' cats","<a\\s+href(?>\\s*)=(?>\\s*)        # find <a href=
 ([\"'])?                         # find single or double quote
 (?(1) (.*?)\\1 | (\\S+))          # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended,
                                                                              {parts,
                                                                               2}]))),
    <<":':abcd xyz pqr:: cats">> = iolist_to_binary(join(re:split("<a href       =       'abcd xyz pqr' cats","<a\\s+href(?>\\s*)=(?>\\s*)        # find <a href=
 ([\"'])?                         # find single or double quote
 (?(1) (.*?)\\1 | (\\S+))          # if quote found, match up to next matching
                                 # quote, otherwise match up to next space",[caseless,
                                                                              dotall,
                                                                              extended]))),
    <<":A:Z:B:::C:::D:::E:::F:::G">> = iolist_to_binary(join(re:split("ZABCDEFG","((Z)+|A)*",[trim]))),
    <<":A:Z:BCDEFG">> = iolist_to_binary(join(re:split("ZABCDEFG","((Z)+|A)*",[{parts,
                                                                                                                                                                                  2}]))),
    <<":A:Z:B:::C:::D:::E:::F:::G:::">> = iolist_to_binary(join(re:split("ZABCDEFG","((Z)+|A)*",[]))),
    <<":A::B:::C:::D:::E:::F:::G">> = iolist_to_binary(join(re:split("ZABCDEFG","(Z()|A)*",[trim]))),
    <<":A::BCDEFG">> = iolist_to_binary(join(re:split("ZABCDEFG","(Z()|A)*",[{parts,
                                                                                                                                                                                2}]))),
    <<":A::B:::C:::D:::E:::F:::G:::">> = iolist_to_binary(join(re:split("ZABCDEFG","(Z()|A)*",[]))),
    <<":A:::B::::C::::D::::E::::F::::G">> = iolist_to_binary(join(re:split("ZABCDEFG","(Z(())|A)*",[trim]))),
    <<":A:::BCDEFG">> = iolist_to_binary(join(re:split("ZABCDEFG","(Z(())|A)*",[{parts,
                                                                                                                                                                                    2}]))),
    <<":A:::B::::C::::D::::E::::F::::G::::">> = iolist_to_binary(join(re:split("ZABCDEFG","(Z(())|A)*",[]))),
    <<":A:B::C::D::E::F::G">> = iolist_to_binary(join(re:split("ZABCDEFG","((?>Z)+|A)*",[trim]))),
    <<":A:BCDEFG">> = iolist_to_binary(join(re:split("ZABCDEFG","((?>Z)+|A)*",[{parts,
                                                                                                                                                                                      2}]))),
    <<":A:B::C::D::E::F::G::">> = iolist_to_binary(join(re:split("ZABCDEFG","((?>Z)+|A)*",[]))),
    <<"Z::::B::C::D::E::F::G">> = iolist_to_binary(join(re:split("ZABCDEFG","((?>)+|A)*",[trim]))),
    <<"Z::ABCDEFG">> = iolist_to_binary(join(re:split("ZABCDEFG","((?>)+|A)*",[{parts,
                                                                                                                                                                                    2}]))),
    <<"Z::::B::C::D::E::F::G::">> = iolist_to_binary(join(re:split("ZABCDEFG","((?>)+|A)*",[]))),
    <<":b:b:b">> = iolist_to_binary(join(re:split("abbab","a*",[trim]))),
    <<":bbab">> = iolist_to_binary(join(re:split("abbab","a*",[{parts,
                                                                                                                                                              2}]))),
    <<":b:b:b:">> = iolist_to_binary(join(re:split("abbab","a*",[]))),
    <<":bcde">> = iolist_to_binary(join(re:split("abcde","^[\\d-a]",[trim]))),
    <<":bcde">> = iolist_to_binary(join(re:split("abcde","^[\\d-a]",[{parts,
                                                                                                                                                                           2}]))),
    <<":bcde">> = iolist_to_binary(join(re:split("abcde","^[\\d-a]",[]))),
    <<":things">> = iolist_to_binary(join(re:split("-things","^[\\d-a]",[trim]))),
    <<":things">> = iolist_to_binary(join(re:split("-things","^[\\d-a]",[{parts,
                                                                                                                                                                               2}]))),
    <<":things">> = iolist_to_binary(join(re:split("-things","^[\\d-a]",[]))),
    <<":digit">> = iolist_to_binary(join(re:split("0digit","^[\\d-a]",[trim]))),
    <<":digit">> = iolist_to_binary(join(re:split("0digit","^[\\d-a]",[{parts,
                                                                                                                                                                             2}]))),
    <<":digit">> = iolist_to_binary(join(re:split("0digit","^[\\d-a]",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[\\d-a]",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[\\d-a]",[{parts,
                                                                                                                                                                                       2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^[\\d-a]",[]))),
    <<"bcdef">> = iolist_to_binary(join(re:split("bcdef","^[\\d-a]",[trim]))),
    <<"bcdef">> = iolist_to_binary(join(re:split("bcdef","^[\\d-a]",[{parts,
                                                                                                                                                                           2}]))),
    <<"bcdef">> = iolist_to_binary(join(re:split("bcdef","^[\\d-a]",[]))),
    <<">:<">> = iolist_to_binary(join(re:split("> 	

<","[[:space:]]+",[trim]))),
    <<">:<">> = iolist_to_binary(join(re:split("> 	

<","[[:space:]]+",[{parts,2}]))),
    <<">:<">> = iolist_to_binary(join(re:split("> 	

<","[[:space:]]+",[]))),
    <<">:

<">> = iolist_to_binary(join(re:split("> 	

<","[[:blank:]]+",[trim]))),
    <<">:

<">> = iolist_to_binary(join(re:split("> 	

<","[[:blank:]]+",[{parts,2}]))),
    <<">:

<">> = iolist_to_binary(join(re:split("> 	

<","[[:blank:]]+",[]))),
    <<">:<">> = iolist_to_binary(join(re:split("> 	

<","[\\s]+",[trim]))),
    <<">:<">> = iolist_to_binary(join(re:split("> 	

<","[\\s]+",[{parts,2}]))),
    <<">:<">> = iolist_to_binary(join(re:split("> 	

<","[\\s]+",[]))),
    <<">:<">> = iolist_to_binary(join(re:split("> 	

<","\\s+",[trim]))),
    <<">:<">> = iolist_to_binary(join(re:split("> 	

<","\\s+",[{parts,2}]))),
    <<">:<">> = iolist_to_binary(join(re:split("> 	

<","\\s+",[]))),
    <<"">> = iolist_to_binary(join(re:split("ab","ab",[extended,
                                                                                                                                                        trim]))),
    <<":">> = iolist_to_binary(join(re:split("ab","ab",[extended,
                                                                                                                                                          {parts,
                                                                                                                                                           2}]))),
    <<":">> = iolist_to_binary(join(re:split("ab","ab",[extended]))),
    <<"a
:b">> = iolist_to_binary(join(re:split("a
xb","(?!\\A)x",[multiline,trim]))),
    <<"a
:b">> = iolist_to_binary(join(re:split("a
xb","(?!\\A)x",[multiline,{parts,2}]))),
    <<"a
:b">> = iolist_to_binary(join(re:split("a
xb","(?!\\A)x",[multiline]))),
    <<"a
xb">> = iolist_to_binary(join(re:split("a
xb","(?!^)x",[multiline,trim]))),
    <<"a
xb">> = iolist_to_binary(join(re:split("a
xb","(?!^)x",[multiline,{parts,2}]))),
    <<"a
xb">> = iolist_to_binary(join(re:split("a
xb","(?!^)x",[multiline]))),
    <<"">> = iolist_to_binary(join(re:split("abcabcabc","abc\\Qabc\\Eabc",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abcabcabc","abc\\Qabc\\Eabc",[{parts,
                                                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("abcabcabc","abc\\Qabc\\Eabc",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc(*+|abc","abc\\Q(*+|\\Eabc",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc(*+|abc","abc\\Q(*+|\\Eabc",[{parts,
                                                                                                                                                                                                      2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc(*+|abc","abc\\Q(*+|\\Eabc",[]))),
    ok.
run33() ->
    <<"">> = iolist_to_binary(join(re:split("abc abcabc","   abc\\Q abc\\Eabc",[extended,
                                                                                                                                                                                                          trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc abcabc","   abc\\Q abc\\Eabc",[extended,
                                                                                                                                                                                                            {parts,
                                                                                                                                                                                                             2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc abcabc","   abc\\Q abc\\Eabc",[extended]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","   abc\\Q abc\\Eabc",[extended,
                                                                                                                                                                                                            trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","   abc\\Q abc\\Eabc",[extended,
                                                                                                                                                                                                              {parts,
                                                                                                                                                                                                               2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","   abc\\Q abc\\Eabc",[extended]))),
    <<"abcabcabc">> = iolist_to_binary(join(re:split("abcabcabc","   abc\\Q abc\\Eabc",[extended,
                                                                                                                                                                                                        trim]))),
    <<"abcabcabc">> = iolist_to_binary(join(re:split("abcabcabc","   abc\\Q abc\\Eabc",[extended,
                                                                                                                                                                                                          {parts,
                                                                                                                                                                                                           2}]))),
    <<"abcabcabc">> = iolist_to_binary(join(re:split("abcabcabc","   abc\\Q abc\\Eabc",[extended]))),
    <<"">> = iolist_to_binary(join(re:split("abc#not comment
    literal","abc#comment
    \\Q#not comment
    literal\\E",[extended,trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc#not comment
    literal","abc#comment
    \\Q#not comment
    literal\\E",[extended,{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc#not comment
    literal","abc#comment
    \\Q#not comment
    literal\\E",[extended]))),
    <<"">> = iolist_to_binary(join(re:split("abc#not comment
    literal","abc#comment
    \\Q#not comment
    literal",[extended,trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc#not comment
    literal","abc#comment
    \\Q#not comment
    literal",[extended,{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc#not comment
    literal","abc#comment
    \\Q#not comment
    literal",[extended]))),
    <<"">> = iolist_to_binary(join(re:split("abc#not comment
    literal","abc#comment
    \\Q#not comment
    literal\\E #more comment
    ",[extended,trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc#not comment
    literal","abc#comment
    \\Q#not comment
    literal\\E #more comment
    ",[extended,{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc#not comment
    literal","abc#comment
    \\Q#not comment
    literal\\E #more comment
    ",[extended]))),
    <<"">> = iolist_to_binary(join(re:split("abc#not comment
    literal","abc#comment
    \\Q#not comment
    literal\\E #more comment",[extended,trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc#not comment
    literal","abc#comment
    \\Q#not comment
    literal\\E #more comment",[extended,{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc#not comment
    literal","abc#comment
    \\Q#not comment
    literal\\E #more comment",[extended]))),
    <<"">> = iolist_to_binary(join(re:split("abc\\$xyz","\\Qabc\\$xyz\\E",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc\\$xyz","\\Qabc\\$xyz\\E",[{parts,
                                                                                                                                                                                                        2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc\\$xyz","\\Qabc\\$xyz\\E",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc$xyz","\\Qabc\\E\\$\\Qxyz\\E",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc$xyz","\\Qabc\\E\\$\\Qxyz\\E",[{parts,
                                                                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc$xyz","\\Qabc\\E\\$\\Qxyz\\E",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc","\\Aabc",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","\\Aabc",[{parts,
                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","\\Aabc",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\Aabc",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\Aabc",[{parts,
                                                                                                                                                                                   2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\Aabc",[]))),
    <<"xyzabc">> = iolist_to_binary(join(re:split("xyzabc","\\Aabc",[trim]))),
    <<"xyzabc">> = iolist_to_binary(join(re:split("xyzabc","\\Aabc",[{parts,
                                                                                                                                                                         2}]))),
    <<"xyzabc">> = iolist_to_binary(join(re:split("xyzabc","\\Aabc",[]))),
    <<":abc2xyzabc3">> = iolist_to_binary(join(re:split("abc1abc2xyzabc3","\\Aabc.",[trim]))),
    <<":abc2xyzabc3">> = iolist_to_binary(join(re:split("abc1abc2xyzabc3","\\Aabc.",[{parts,
                                                                                                                                                                                             2}]))),
    <<":abc2xyzabc3">> = iolist_to_binary(join(re:split("abc1abc2xyzabc3","\\Aabc.",[]))),
    <<"::xyz">> = iolist_to_binary(join(re:split("abc1abc2xyzabc3","abc.",[trim]))),
    <<":abc2xyzabc3">> = iolist_to_binary(join(re:split("abc1abc2xyzabc3","abc.",[{parts,
                                                                                                                                                                                      2}]))),
    <<"::xyz:">> = iolist_to_binary(join(re:split("abc1abc2xyzabc3","abc.",[]))),
    <<"X:Y">> = iolist_to_binary(join(re:split("XabcdY","a(?x: b c )d",[trim]))),
    <<"X:Y">> = iolist_to_binary(join(re:split("XabcdY","a(?x: b c )d",[{parts,
                                                                                                                                                                                    2}]))),
    <<"X:Y">> = iolist_to_binary(join(re:split("XabcdY","a(?x: b c )d",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a(?x: b c )d",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a(?x: b c )d",[{parts,
                                                                                                                                                                                              2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","a(?x: b c )d",[]))),
    <<"Xa b c d Y">> = iolist_to_binary(join(re:split("Xa b c d Y","a(?x: b c )d",[trim]))),
    <<"Xa b c d Y">> = iolist_to_binary(join(re:split("Xa b c d Y","a(?x: b c )d",[{parts,
                                                                                                                                                                                            2}]))),
    <<"Xa b c d Y">> = iolist_to_binary(join(re:split("Xa b c d Y","a(?x: b c )d",[]))),
    <<"X:abc:Y">> = iolist_to_binary(join(re:split("XabcY","((?x)x y z | a b c)",[trim]))),
    <<"X:abc:Y">> = iolist_to_binary(join(re:split("XabcY","((?x)x y z | a b c)",[{parts,
                                                                                                                                                                                                2}]))),
    <<"X:abc:Y">> = iolist_to_binary(join(re:split("XabcY","((?x)x y z | a b c)",[]))),
    <<"A:xyz:B">> = iolist_to_binary(join(re:split("AxyzB","((?x)x y z | a b c)",[trim]))),
    <<"A:xyz:B">> = iolist_to_binary(join(re:split("AxyzB","((?x)x y z | a b c)",[{parts,
                                                                                                                                                                                                2}]))),
    <<"A:xyz:B">> = iolist_to_binary(join(re:split("AxyzB","((?x)x y z | a b c)",[]))),
    <<"X:Y">> = iolist_to_binary(join(re:split("XabCY","(?i)AB(?-i)C",[trim]))),
    <<"X:Y">> = iolist_to_binary(join(re:split("XabCY","(?i)AB(?-i)C",[{parts,
                                                                                                                                                                                  2}]))),
    <<"X:Y">> = iolist_to_binary(join(re:split("XabCY","(?i)AB(?-i)C",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?i)AB(?-i)C",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?i)AB(?-i)C",[{parts,
                                                                                                                                                                                              2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(?i)AB(?-i)C",[]))),
    <<"XabcY">> = iolist_to_binary(join(re:split("XabcY","(?i)AB(?-i)C",[trim]))),
    <<"XabcY">> = iolist_to_binary(join(re:split("XabcY","(?i)AB(?-i)C",[{parts,
                                                                                                                                                                                  2}]))),
    <<"XabcY">> = iolist_to_binary(join(re:split("XabcY","(?i)AB(?-i)C",[]))),
    <<":abC">> = iolist_to_binary(join(re:split("abCE","((?i)AB(?-i)C|D)E",[trim]))),
    <<":abC:">> = iolist_to_binary(join(re:split("abCE","((?i)AB(?-i)C|D)E",[{parts,
                                                                                                                                                                                          2}]))),
    <<":abC:">> = iolist_to_binary(join(re:split("abCE","((?i)AB(?-i)C|D)E",[]))),
    <<":D">> = iolist_to_binary(join(re:split("DE","((?i)AB(?-i)C|D)E",[trim]))),
    <<":D:">> = iolist_to_binary(join(re:split("DE","((?i)AB(?-i)C|D)E",[{parts,
                                                                                                                                                                                      2}]))),
    <<":D:">> = iolist_to_binary(join(re:split("DE","((?i)AB(?-i)C|D)E",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","((?i)AB(?-i)C|D)E",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","((?i)AB(?-i)C|D)E",[{parts,
                                                                                                                                                                                                        2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","((?i)AB(?-i)C|D)E",[]))),
    <<"abcE">> = iolist_to_binary(join(re:split("abcE","((?i)AB(?-i)C|D)E",[trim]))),
    <<"abcE">> = iolist_to_binary(join(re:split("abcE","((?i)AB(?-i)C|D)E",[{parts,
                                                                                                                                                                                          2}]))),
    <<"abcE">> = iolist_to_binary(join(re:split("abcE","((?i)AB(?-i)C|D)E",[]))),
    <<"abCe">> = iolist_to_binary(join(re:split("abCe","((?i)AB(?-i)C|D)E",[trim]))),
    <<"abCe">> = iolist_to_binary(join(re:split("abCe","((?i)AB(?-i)C|D)E",[{parts,
                                                                                                                                                                                          2}]))),
    <<"abCe">> = iolist_to_binary(join(re:split("abCe","((?i)AB(?-i)C|D)E",[]))),
    <<"dE">> = iolist_to_binary(join(re:split("dE","((?i)AB(?-i)C|D)E",[trim]))),
    <<"dE">> = iolist_to_binary(join(re:split("dE","((?i)AB(?-i)C|D)E",[{parts,
                                                                                                                                                                                      2}]))),
    <<"dE">> = iolist_to_binary(join(re:split("dE","((?i)AB(?-i)C|D)E",[]))),
    <<"De">> = iolist_to_binary(join(re:split("De","((?i)AB(?-i)C|D)E",[trim]))),
    <<"De">> = iolist_to_binary(join(re:split("De","((?i)AB(?-i)C|D)E",[{parts,
                                                                                                                                                                                      2}]))),
    <<"De">> = iolist_to_binary(join(re:split("De","((?i)AB(?-i)C|D)E",[]))),
    <<":abc">> = iolist_to_binary(join(re:split("abc123abc","(.*)\\d+\\1",[trim]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abc123abc","(.*)\\d+\\1",[{parts,
                                                                                                                                                                                          2}]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abc123abc","(.*)\\d+\\1",[]))),
    <<"a:bc">> = iolist_to_binary(join(re:split("abc123bc","(.*)\\d+\\1",[trim]))),
    <<"a:bc:">> = iolist_to_binary(join(re:split("abc123bc","(.*)\\d+\\1",[{parts,
                                                                                                                                                                                        2}]))),
    <<"a:bc:">> = iolist_to_binary(join(re:split("abc123bc","(.*)\\d+\\1",[]))),
    <<":abc">> = iolist_to_binary(join(re:split("abc123abc","(.*)\\d+\\1",[dotall,
                                                                                                                                                                                        trim]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abc123abc","(.*)\\d+\\1",[dotall,
                                                                                                                                                                                          {parts,
                                                                                                                                                                                           2}]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abc123abc","(.*)\\d+\\1",[dotall]))),
    <<"a:bc">> = iolist_to_binary(join(re:split("abc123bc","(.*)\\d+\\1",[dotall,
                                                                                                                                                                                      trim]))),
    <<"a:bc:">> = iolist_to_binary(join(re:split("abc123bc","(.*)\\d+\\1",[dotall,
                                                                                                                                                                                        {parts,
                                                                                                                                                                                         2}]))),
    <<"a:bc:">> = iolist_to_binary(join(re:split("abc123bc","(.*)\\d+\\1",[dotall]))),
    <<":abc:abc">> = iolist_to_binary(join(re:split("abc123abc","((.*))\\d+\\1",[trim]))),
    <<":abc:abc:">> = iolist_to_binary(join(re:split("abc123abc","((.*))\\d+\\1",[{parts,
                                                                                                                                                                                              2}]))),
    <<":abc:abc:">> = iolist_to_binary(join(re:split("abc123abc","((.*))\\d+\\1",[]))),
    <<"a:bc:bc">> = iolist_to_binary(join(re:split("abc123bc","((.*))\\d+\\1",[trim]))),
    <<"a:bc:bc:">> = iolist_to_binary(join(re:split("abc123bc","((.*))\\d+\\1",[{parts,
                                                                                                                                                                                            2}]))),
    <<"a:bc:bc:">> = iolist_to_binary(join(re:split("abc123bc","((.*))\\d+\\1",[]))),
    <<"">> = iolist_to_binary(join(re:split("a123::a123","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,trim]))),
    <<"::">> = iolist_to_binary(join(re:split("a123::a123","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,{parts,2}]))),
    <<"::">> = iolist_to_binary(join(re:split("a123::a123","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless]))),
    <<"">> = iolist_to_binary(join(re:split("a123:b342::abcd","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,trim]))),
    <<"::">> = iolist_to_binary(join(re:split("a123:b342::abcd","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,{parts,2}]))),
    <<"::">> = iolist_to_binary(join(re:split("a123:b342::abcd","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless]))),
    <<"">> = iolist_to_binary(join(re:split("a123:b342::324e:abcd","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,trim]))),
    <<"::">> = iolist_to_binary(join(re:split("a123:b342::324e:abcd","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,{parts,2}]))),
    <<"::">> = iolist_to_binary(join(re:split("a123:b342::324e:abcd","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless]))),
    <<"">> = iolist_to_binary(join(re:split("a123:ddde:b342::324e:abcd","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,trim]))),
    <<"::">> = iolist_to_binary(join(re:split("a123:ddde:b342::324e:abcd","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,{parts,2}]))),
    <<"::">> = iolist_to_binary(join(re:split("a123:ddde:b342::324e:abcd","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless]))),
    <<"">> = iolist_to_binary(join(re:split("a123:ddde:b342::324e:dcba:abcd","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,trim]))),
    <<"::">> = iolist_to_binary(join(re:split("a123:ddde:b342::324e:dcba:abcd","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,{parts,2}]))),
    <<"::">> = iolist_to_binary(join(re:split("a123:ddde:b342::324e:dcba:abcd","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless]))),
    <<"">> = iolist_to_binary(join(re:split("a123:ddde:9999:b342::324e:dcba:abcd","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,trim]))),
    <<"::">> = iolist_to_binary(join(re:split("a123:ddde:9999:b342::324e:dcba:abcd","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,{parts,2}]))),
    <<"::">> = iolist_to_binary(join(re:split("a123:ddde:9999:b342::324e:dcba:abcd","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,{parts,2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless]))),
    <<"1:2:3:4:5:6:7:8">> = iolist_to_binary(join(re:split("1:2:3:4:5:6:7:8","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,trim]))),
    <<"1:2:3:4:5:6:7:8">> = iolist_to_binary(join(re:split("1:2:3:4:5:6:7:8","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,{parts,2}]))),
    <<"1:2:3:4:5:6:7:8">> = iolist_to_binary(join(re:split("1:2:3:4:5:6:7:8","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless]))),
    <<"a123:bce:ddde:9999:b342::324e:dcba:abcd">> = iolist_to_binary(join(re:split("a123:bce:ddde:9999:b342::324e:dcba:abcd","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,trim]))),
    <<"a123:bce:ddde:9999:b342::324e:dcba:abcd">> = iolist_to_binary(join(re:split("a123:bce:ddde:9999:b342::324e:dcba:abcd","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,{parts,2}]))),
    <<"a123:bce:ddde:9999:b342::324e:dcba:abcd">> = iolist_to_binary(join(re:split("a123:bce:ddde:9999:b342::324e:dcba:abcd","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless]))),
    <<"a123::9999:b342::324e:dcba:abcd">> = iolist_to_binary(join(re:split("a123::9999:b342::324e:dcba:abcd","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,trim]))),
    <<"a123::9999:b342::324e:dcba:abcd">> = iolist_to_binary(join(re:split("a123::9999:b342::324e:dcba:abcd","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,{parts,2}]))),
    <<"a123::9999:b342::324e:dcba:abcd">> = iolist_to_binary(join(re:split("a123::9999:b342::324e:dcba:abcd","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless]))),
    <<"abcde:2:3:4:5:6:7:8">> = iolist_to_binary(join(re:split("abcde:2:3:4:5:6:7:8","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,trim]))),
    <<"abcde:2:3:4:5:6:7:8">> = iolist_to_binary(join(re:split("abcde:2:3:4:5:6:7:8","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,{parts,2}]))),
    <<"abcde:2:3:4:5:6:7:8">> = iolist_to_binary(join(re:split("abcde:2:3:4:5:6:7:8","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless]))),
    <<"::1">> = iolist_to_binary(join(re:split("::1","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,trim]))),
    <<"::1">> = iolist_to_binary(join(re:split("::1","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,{parts,2}]))),
    <<"::1">> = iolist_to_binary(join(re:split("::1","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless]))),
    <<"abcd:fee0:123::">> = iolist_to_binary(join(re:split("abcd:fee0:123::","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,trim]))),
    <<"abcd:fee0:123::">> = iolist_to_binary(join(re:split("abcd:fee0:123::","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,{parts,2}]))),
    <<"abcd:fee0:123::">> = iolist_to_binary(join(re:split("abcd:fee0:123::","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless]))),
    <<":1">> = iolist_to_binary(join(re:split(":1","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,trim]))),
    <<":1">> = iolist_to_binary(join(re:split(":1","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,{parts,2}]))),
    <<":1">> = iolist_to_binary(join(re:split(":1","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless]))),
    <<"1:">> = iolist_to_binary(join(re:split("1:","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,trim]))),
    <<"1:">> = iolist_to_binary(join(re:split("1:","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless,{parts,2}]))),
    <<"1:">> = iolist_to_binary(join(re:split("1:","^(?!:)                       # colon disallowed at start
  (?:                         # start of item
    (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
    (?(1)0 | () ) )           # if null previously matched, fail; else null
    :                         # followed by colon
  ){1,7}                      # end item; 1-7 of them required               
  [0-9a-f]{1,4} $             # final hex number at end of string
  (?(1)|.)                    # check that there was an empty component
  ",[extended,caseless]))),
    <<"">> = iolist_to_binary(join(re:split("z","[z\\Qa-d]\\E]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("z","[z\\Qa-d]\\E]",[{parts,
                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("z","[z\\Qa-d]\\E]",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","[z\\Qa-d]\\E]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a","[z\\Qa-d]\\E]",[{parts,
                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("a","[z\\Qa-d]\\E]",[]))),
    <<"">> = iolist_to_binary(join(re:split("-","[z\\Qa-d]\\E]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("-","[z\\Qa-d]\\E]",[{parts,
                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("-","[z\\Qa-d]\\E]",[]))),
    <<"">> = iolist_to_binary(join(re:split("d","[z\\Qa-d]\\E]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("d","[z\\Qa-d]\\E]",[{parts,
                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("d","[z\\Qa-d]\\E]",[]))),
    <<"">> = iolist_to_binary(join(re:split("]","[z\\Qa-d]\\E]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("]","[z\\Qa-d]\\E]",[{parts,
                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("]","[z\\Qa-d]\\E]",[]))),
    <<"*** F:ilers">> = iolist_to_binary(join(re:split("*** Failers","[z\\Qa-d]\\E]",[trim]))),
    <<"*** F:ilers">> = iolist_to_binary(join(re:split("*** Failers","[z\\Qa-d]\\E]",[{parts,
                                                                                                                                                                                                  2}]))),
    <<"*** F:ilers">> = iolist_to_binary(join(re:split("*** Failers","[z\\Qa-d]\\E]",[]))),
    <<"b">> = iolist_to_binary(join(re:split("b","[z\\Qa-d]\\E]",[trim]))),
    <<"b">> = iolist_to_binary(join(re:split("b","[z\\Qa-d]\\E]",[{parts,
                                                                                                                                                                              2}]))),
    <<"b">> = iolist_to_binary(join(re:split("b","[z\\Qa-d]\\E]",[]))),
    ok.
run34() ->
    <<"">> = iolist_to_binary(join(re:split("z","[\\z\\C]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("z","[\\z\\C]",[{parts,
                                                                                                                                                                    2}]))),
    <<":">> = iolist_to_binary(join(re:split("z","[\\z\\C]",[]))),
    <<"">> = iolist_to_binary(join(re:split("C","[\\z\\C]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("C","[\\z\\C]",[{parts,
                                                                                                                                                                    2}]))),
    <<":">> = iolist_to_binary(join(re:split("C","[\\z\\C]",[]))),
    <<"">> = iolist_to_binary(join(re:split("M","\\M",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("M","\\M",[{parts,
                                                                                                                                                         2}]))),
    <<":">> = iolist_to_binary(join(re:split("M","\\M",[]))),
    <<"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","(a+)*b",[trim]))),
    <<"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","(a+)*b",[{parts,
                                                                                                                                                                                                                                                                                                        2}]))),
    <<"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","(a+)*b",[]))),
    <<"„XAZ">> = iolist_to_binary(join(re:split("„XAZXB","(?<=Z)X.",[trim]))),
    <<"„XAZ:">> = iolist_to_binary(join(re:split("„XAZXB","(?<=Z)X.",[{parts,
                                                                                                                                                                            2}]))),
    <<"„XAZ:">> = iolist_to_binary(join(re:split("„XAZXB","(?<=Z)X.",[]))),
    <<"">> = iolist_to_binary(join(re:split("ab cd defg","ab cd (?x) de fg",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("ab cd defg","ab cd (?x) de fg",[{parts,
                                                                                                                                                                                                    2}]))),
    <<":">> = iolist_to_binary(join(re:split("ab cd defg","ab cd (?x) de fg",[]))),
    <<"">> = iolist_to_binary(join(re:split("ab cddefg","ab cd(?x) de fg",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("ab cddefg","ab cd(?x) de fg",[{parts,
                                                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("ab cddefg","ab cd(?x) de fg",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","ab cd(?x) de fg",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","ab cd(?x) de fg",[{parts,
                                                                                                                                                                                                  2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","ab cd(?x) de fg",[]))),
    <<"abcddefg">> = iolist_to_binary(join(re:split("abcddefg","ab cd(?x) de fg",[trim]))),
    <<"abcddefg">> = iolist_to_binary(join(re:split("abcddefg","ab cd(?x) de fg",[{parts,
                                                                                                                                                                                              2}]))),
    <<"abcddefg">> = iolist_to_binary(join(re:split("abcddefg","ab cd(?x) de fg",[]))),
    <<"foo:bar:X">> = iolist_to_binary(join(re:split("foobarX","(?<![^f]oo)(bar)",[trim]))),
    <<"foo:bar:X">> = iolist_to_binary(join(re:split("foobarX","(?<![^f]oo)(bar)",[{parts,
                                                                                                                                                                                              2}]))),
    <<"foo:bar:X">> = iolist_to_binary(join(re:split("foobarX","(?<![^f]oo)(bar)",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<![^f]oo)(bar)",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<![^f]oo)(bar)",[{parts,
                                                                                                                                                                                                    2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<![^f]oo)(bar)",[]))),
    <<"boobarX">> = iolist_to_binary(join(re:split("boobarX","(?<![^f]oo)(bar)",[trim]))),
    <<"boobarX">> = iolist_to_binary(join(re:split("boobarX","(?<![^f]oo)(bar)",[{parts,
                                                                                                                                                                                              2}]))),
    <<"boobarX">> = iolist_to_binary(join(re:split("boobarX","(?<![^f]oo)(bar)",[]))),
    <<"off">> = iolist_to_binary(join(re:split("offX","(?<![^f])X",[trim]))),
    <<"off:">> = iolist_to_binary(join(re:split("offX","(?<![^f])X",[{parts,
                                                                                                                                                                            2}]))),
    <<"off:">> = iolist_to_binary(join(re:split("offX","(?<![^f])X",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<![^f])X",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<![^f])X",[{parts,
                                                                                                                                                                                        2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<![^f])X",[]))),
    <<"onyX">> = iolist_to_binary(join(re:split("onyX","(?<![^f])X",[trim]))),
    <<"onyX">> = iolist_to_binary(join(re:split("onyX","(?<![^f])X",[{parts,
                                                                                                                                                                            2}]))),
    <<"onyX">> = iolist_to_binary(join(re:split("onyX","(?<![^f])X",[]))),
    <<"ony">> = iolist_to_binary(join(re:split("onyX","(?<=[^f])X",[trim]))),
    <<"ony:">> = iolist_to_binary(join(re:split("onyX","(?<=[^f])X",[{parts,
                                                                                                                                                                            2}]))),
    <<"ony:">> = iolist_to_binary(join(re:split("onyX","(?<=[^f])X",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<=[^f])X",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<=[^f])X",[{parts,
                                                                                                                                                                                        2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<=[^f])X",[]))),
    <<"offX">> = iolist_to_binary(join(re:split("offX","(?<=[^f])X",[trim]))),
    <<"offX">> = iolist_to_binary(join(re:split("offX","(?<=[^f])X",[{parts,
                                                                                                                                                                            2}]))),
    <<"offX">> = iolist_to_binary(join(re:split("offX","(?<=[^f])X",[]))),
    <<"a
:b
:c">> = iolist_to_binary(join(re:split("a
b
c","^",[multiline,trim]))),
    <<"a
:b
c">> = iolist_to_binary(join(re:split("a
b
c","^",[multiline,{parts,2}]))),
    <<"a
:b
:c">> = iolist_to_binary(join(re:split("a
b
c","^",[multiline]))),
    <<"">> = iolist_to_binary(join(re:split("","^",[multiline,
                                                                                                                                                trim]))),
    <<"">> = iolist_to_binary(join(re:split("","^",[multiline,
                                                                                                                                                  {parts,
                                                                                                                                                   2}]))),
    <<"">> = iolist_to_binary(join(re:split("","^",[multiline]))),
    <<"A
C
:C">> = iolist_to_binary(join(re:split("A
C
C","(?<=C\\n)^",[multiline,trim]))),
    <<"A
C
:C">> = iolist_to_binary(join(re:split("A
C
C","(?<=C\\n)^",[multiline,{parts,2}]))),
    <<"A
C
:C">> = iolist_to_binary(join(re:split("A
C
C","(?<=C\\n)^",[multiline]))),
    <<":X">> = iolist_to_binary(join(re:split("bXaX","(?:(?(1)a|b)(X))+",[trim]))),
    <<":X:">> = iolist_to_binary(join(re:split("bXaX","(?:(?(1)a|b)(X))+",[{parts,
                                                                                                                                                                                          2}]))),
    <<":X:">> = iolist_to_binary(join(re:split("bXaX","(?:(?(1)a|b)(X))+",[]))),
    <<":Y">> = iolist_to_binary(join(re:split("bXXaYYaY","(?:(?(1)\\1a|b)(X|Y))+",[trim]))),
    <<":Y:">> = iolist_to_binary(join(re:split("bXXaYYaY","(?:(?(1)\\1a|b)(X|Y))+",[{parts,
                                                                                                                                                                                                             2}]))),
    <<":Y:">> = iolist_to_binary(join(re:split("bXXaYYaY","(?:(?(1)\\1a|b)(X|Y))+",[]))),
    <<":X:YaXXaX">> = iolist_to_binary(join(re:split("bXYaXXaX","(?:(?(1)\\1a|b)(X|Y))+",[trim]))),
    <<":X:YaXXaX">> = iolist_to_binary(join(re:split("bXYaXXaX","(?:(?(1)\\1a|b)(X|Y))+",[{parts,
                                                                                                                                                                                                             2}]))),
    <<":X:YaXXaX">> = iolist_to_binary(join(re:split("bXYaXXaX","(?:(?(1)\\1a|b)(X|Y))+",[]))),
    <<"::::::::::X:XaYYaY">> = iolist_to_binary(join(re:split("bXXaYYaY","()()()()()()()()()(?:(?(10)\\10a|b)(X|Y))+",[trim]))),
    <<"::::::::::X:XaYYaY">> = iolist_to_binary(join(re:split("bXXaYYaY","()()()()()()()()()(?:(?(10)\\10a|b)(X|Y))+",[{parts,
                                                                                                                                                                                                                                                     2}]))),
    <<"::::::::::X:XaYYaY">> = iolist_to_binary(join(re:split("bXXaYYaY","()()()()()()()()()(?:(?(10)\\10a|b)(X|Y))+",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc]","[[,abc,]+]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc]","[[,abc,]+]",[{parts,
                                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc]","[[,abc,]+]",[]))),
    <<"">> = iolist_to_binary(join(re:split("a,b]","[[,abc,]+]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a,b]","[[,abc,]+]",[{parts,
                                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("a,b]","[[,abc,]+]",[]))),
    <<"">> = iolist_to_binary(join(re:split("[a,b,c]","[[,abc,]+]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("[a,b,c]","[[,abc,]+]",[{parts,
                                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("[a,b,c]","[[,abc,]+]",[]))),
    <<"A:B">> = iolist_to_binary(join(re:split("A B","(?-x: )",[extended,
                                                                                                                                                                  trim]))),
    <<"A:B">> = iolist_to_binary(join(re:split("A B","(?-x: )",[extended,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<"A:B">> = iolist_to_binary(join(re:split("A B","(?-x: )",[extended]))),
    <<"A:B">> = iolist_to_binary(join(re:split("A # B","(?x)(?-x: \\s*#\\s*)",[trim]))),
    <<"A:B">> = iolist_to_binary(join(re:split("A # B","(?x)(?-x: \\s*#\\s*)",[{parts,
                                                                                                                                                                                                    2}]))),
    <<"A:B">> = iolist_to_binary(join(re:split("A # B","(?x)(?-x: \\s*#\\s*)",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?x)(?-x: \\s*#\\s*)",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?x)(?-x: \\s*#\\s*)",[{parts,
                                                                                                                                                                                                              2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?x)(?-x: \\s*#\\s*)",[]))),
    <<"#">> = iolist_to_binary(join(re:split("#","(?x)(?-x: \\s*#\\s*)",[trim]))),
    <<"#">> = iolist_to_binary(join(re:split("#","(?x)(?-x: \\s*#\\s*)",[{parts,
                                                                                                                                                                                            2}]))),
    <<"#">> = iolist_to_binary(join(re:split("#","(?x)(?-x: \\s*#\\s*)",[]))),
    <<"A">> = iolist_to_binary(join(re:split("A #include","(?x-is)(?:(?-ixs) \\s*#\\s*) include",[trim]))),
    <<"A:">> = iolist_to_binary(join(re:split("A #include","(?x-is)(?:(?-ixs) \\s*#\\s*) include",[{parts,
                                                                                                                                                                                                                                              2}]))),
    <<"A:">> = iolist_to_binary(join(re:split("A #include","(?x-is)(?:(?-ixs) \\s*#\\s*) include",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?x-is)(?:(?-ixs) \\s*#\\s*) include",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?x-is)(?:(?-ixs) \\s*#\\s*) include",[{parts,
                                                                                                                                                                                                                                              2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?x-is)(?:(?-ixs) \\s*#\\s*) include",[]))),
    <<"A#include">> = iolist_to_binary(join(re:split("A#include","(?x-is)(?:(?-ixs) \\s*#\\s*) include",[trim]))),
    <<"A#include">> = iolist_to_binary(join(re:split("A#include","(?x-is)(?:(?-ixs) \\s*#\\s*) include",[{parts,
                                                                                                                                                                                                                                            2}]))),
    <<"A#include">> = iolist_to_binary(join(re:split("A#include","(?x-is)(?:(?-ixs) \\s*#\\s*) include",[]))),
    <<"A #Include">> = iolist_to_binary(join(re:split("A #Include","(?x-is)(?:(?-ixs) \\s*#\\s*) include",[trim]))),
    <<"A #Include">> = iolist_to_binary(join(re:split("A #Include","(?x-is)(?:(?-ixs) \\s*#\\s*) include",[{parts,
                                                                                                                                                                                                                                              2}]))),
    <<"A #Include">> = iolist_to_binary(join(re:split("A #Include","(?x-is)(?:(?-ixs) \\s*#\\s*) include",[]))),
    ok.
run35() ->
    <<"">> = iolist_to_binary(join(re:split("aaabbbb","a*b*\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaabbbb","a*b*\\w",[{parts,
                                                                                                                                                                             2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaabbbb","a*b*\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaa","a*b*\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaa","a*b*\\w",[{parts,
                                                                                                                                                                       2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaa","a*b*\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","a*b*\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a","a*b*\\w",[{parts,
                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("a","a*b*\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaabbbb","a*b?\\w",[trim]))),
    <<":bb">> = iolist_to_binary(join(re:split("aaabbbb","a*b?\\w",[{parts,
                                                                                                                                                                             2}]))),
    <<"::">> = iolist_to_binary(join(re:split("aaabbbb","a*b?\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaa","a*b?\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaa","a*b?\\w",[{parts,
                                                                                                                                                                       2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaa","a*b?\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","a*b?\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a","a*b?\\w",[{parts,
                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("a","a*b?\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaabbbb","a*b{0,4}\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaabbbb","a*b{0,4}\\w",[{parts,
                                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaabbbb","a*b{0,4}\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaa","a*b{0,4}\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaa","a*b{0,4}\\w",[{parts,
                                                                                                                                                                               2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaa","a*b{0,4}\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","a*b{0,4}\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a","a*b{0,4}\\w",[{parts,
                                                                                                                                                                         2}]))),
    <<":">> = iolist_to_binary(join(re:split("a","a*b{0,4}\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaabbbb","a*b{0,}\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaabbbb","a*b{0,}\\w",[{parts,
                                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaabbbb","a*b{0,}\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaa","a*b{0,}\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaa","a*b{0,}\\w",[{parts,
                                                                                                                                                                             2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaa","a*b{0,}\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","a*b{0,}\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a","a*b{0,}\\w",[{parts,
                                                                                                                                                                       2}]))),
    <<":">> = iolist_to_binary(join(re:split("a","a*b{0,}\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("0a","a*\\d*\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("0a","a*\\d*\\w",[{parts,
                                                                                                                                                                        2}]))),
    <<":">> = iolist_to_binary(join(re:split("0a","a*\\d*\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","a*\\d*\\w",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a","a*\\d*\\w",[{parts,
                                                                                                                                                                      2}]))),
    <<":">> = iolist_to_binary(join(re:split("a","a*\\d*\\w",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","a*b *\\w",[extended,
                                                                                                                                                                 trim]))),
    <<":">> = iolist_to_binary(join(re:split("a","a*b *\\w",[extended,
                                                                                                                                                                   {parts,
                                                                                                                                                                    2}]))),
    <<":">> = iolist_to_binary(join(re:split("a","a*b *\\w",[extended]))),
    <<"">> = iolist_to_binary(join(re:split("a","a*b#comment
  *\\w",[extended,trim]))),
    <<":">> = iolist_to_binary(join(re:split("a","a*b#comment
  *\\w",[extended,{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("a","a*b#comment
  *\\w",[extended]))),
    <<"">> = iolist_to_binary(join(re:split("a","a* b *\\w",[extended,
                                                                                                                                                                   trim]))),
    <<":">> = iolist_to_binary(join(re:split("a","a* b *\\w",[extended,
                                                                                                                                                                     {parts,
                                                                                                                                                                      2}]))),
    <<":">> = iolist_to_binary(join(re:split("a","a* b *\\w",[extended]))),
    <<"::
pqr">> = iolist_to_binary(join(re:split("abc=xyz\\
pqr","^\\w+=.*(\\\\\\n.*)*",[trim]))),
    <<"::
pqr">> = iolist_to_binary(join(re:split("abc=xyz\\
pqr","^\\w+=.*(\\\\\\n.*)*",[{parts,2}]))),
    <<"::
pqr">> = iolist_to_binary(join(re:split("abc=xyz\\
pqr","^\\w+=.*(\\\\\\n.*)*",[]))),
    <<":abcd">> = iolist_to_binary(join(re:split("abcd:","(?=(\\w+))\\1:",[trim]))),
    <<":abcd:">> = iolist_to_binary(join(re:split("abcd:","(?=(\\w+))\\1:",[{parts,
                                                                                                                                                                                        2}]))),
    <<":abcd:">> = iolist_to_binary(join(re:split("abcd:","(?=(\\w+))\\1:",[]))),
    <<":abcd">> = iolist_to_binary(join(re:split("abcd:","^(?=(\\w+))\\1:",[trim]))),
    <<":abcd:">> = iolist_to_binary(join(re:split("abcd:","^(?=(\\w+))\\1:",[{parts,
                                                                                                                                                                                          2}]))),
    <<":abcd:">> = iolist_to_binary(join(re:split("abcd:","^(?=(\\w+))\\1:",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc","^\\Eabc",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","^\\Eabc",[{parts,
                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","^\\Eabc",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","^[\\Eabc]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a","^[\\Eabc]",[{parts,
                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("a","^[\\Eabc]",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^[\\Eabc]",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^[\\Eabc]",[{parts,
                                                                                                                                                                                       2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^[\\Eabc]",[]))),
    <<"E">> = iolist_to_binary(join(re:split("E","^[\\Eabc]",[trim]))),
    <<"E">> = iolist_to_binary(join(re:split("E","^[\\Eabc]",[{parts,
                                                                                                                                                                     2}]))),
    <<"E">> = iolist_to_binary(join(re:split("E","^[\\Eabc]",[]))),
    <<"">> = iolist_to_binary(join(re:split("b","^[a-\\Ec]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("b","^[a-\\Ec]",[{parts,
                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("b","^[a-\\Ec]",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^[a-\\Ec]",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^[a-\\Ec]",[{parts,
                                                                                                                                                                                       2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^[a-\\Ec]",[]))),
    <<"-">> = iolist_to_binary(join(re:split("-","^[a-\\Ec]",[trim]))),
    <<"-">> = iolist_to_binary(join(re:split("-","^[a-\\Ec]",[{parts,
                                                                                                                                                                     2}]))),
    <<"-">> = iolist_to_binary(join(re:split("-","^[a-\\Ec]",[]))),
    <<"E">> = iolist_to_binary(join(re:split("E","^[a-\\Ec]",[trim]))),
    <<"E">> = iolist_to_binary(join(re:split("E","^[a-\\Ec]",[{parts,
                                                                                                                                                                     2}]))),
    <<"E">> = iolist_to_binary(join(re:split("E","^[a-\\Ec]",[]))),
    <<"">> = iolist_to_binary(join(re:split("b","^[a\\E\\E-\\Ec]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("b","^[a\\E\\E-\\Ec]",[{parts,
                                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("b","^[a\\E\\E-\\Ec]",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^[a\\E\\E-\\Ec]",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^[a\\E\\E-\\Ec]",[{parts,
                                                                                                                                                                                                     2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^[a\\E\\E-\\Ec]",[]))),
    <<"-">> = iolist_to_binary(join(re:split("-","^[a\\E\\E-\\Ec]",[trim]))),
    <<"-">> = iolist_to_binary(join(re:split("-","^[a\\E\\E-\\Ec]",[{parts,
                                                                                                                                                                                   2}]))),
    <<"-">> = iolist_to_binary(join(re:split("-","^[a\\E\\E-\\Ec]",[]))),
    <<"E">> = iolist_to_binary(join(re:split("E","^[a\\E\\E-\\Ec]",[trim]))),
    <<"E">> = iolist_to_binary(join(re:split("E","^[a\\E\\E-\\Ec]",[{parts,
                                                                                                                                                                                   2}]))),
    <<"E">> = iolist_to_binary(join(re:split("E","^[a\\E\\E-\\Ec]",[]))),
    <<"">> = iolist_to_binary(join(re:split("b","^[\\E\\Qa\\E-\\Qz\\E]+",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("b","^[\\E\\Qa\\E-\\Qz\\E]+",[{parts,
                                                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("b","^[\\E\\Qa\\E-\\Qz\\E]+",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^[\\E\\Qa\\E-\\Qz\\E]+",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^[\\E\\Qa\\E-\\Qz\\E]+",[{parts,
                                                                                                                                                                                                                     2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^[\\E\\Qa\\E-\\Qz\\E]+",[]))),
    <<"-">> = iolist_to_binary(join(re:split("-","^[\\E\\Qa\\E-\\Qz\\E]+",[trim]))),
    <<"-">> = iolist_to_binary(join(re:split("-","^[\\E\\Qa\\E-\\Qz\\E]+",[{parts,
                                                                                                                                                                                                   2}]))),
    <<"-">> = iolist_to_binary(join(re:split("-","^[\\E\\Qa\\E-\\Qz\\E]+",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","^[a\\Q]bc\\E]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a","^[a\\Q]bc\\E]",[{parts,
                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("a","^[a\\Q]bc\\E]",[]))),
    <<"">> = iolist_to_binary(join(re:split("]","^[a\\Q]bc\\E]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("]","^[a\\Q]bc\\E]",[{parts,
                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("]","^[a\\Q]bc\\E]",[]))),
    <<"">> = iolist_to_binary(join(re:split("c","^[a\\Q]bc\\E]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("c","^[a\\Q]bc\\E]",[{parts,
                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("c","^[a\\Q]bc\\E]",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","^[a-\\Q\\E]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a","^[a-\\Q\\E]",[{parts,
                                                                                                                                                                          2}]))),
    <<":">> = iolist_to_binary(join(re:split("a","^[a-\\Q\\E]",[]))),
    <<"">> = iolist_to_binary(join(re:split("-","^[a-\\Q\\E]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("-","^[a-\\Q\\E]",[{parts,
                                                                                                                                                                          2}]))),
    <<":">> = iolist_to_binary(join(re:split("-","^[a-\\Q\\E]",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aaaa","^(a()*)*",[trim]))),
    <<":a::">> = iolist_to_binary(join(re:split("aaaa","^(a()*)*",[{parts,
                                                                                                                                                                        2}]))),
    <<":a::">> = iolist_to_binary(join(re:split("aaaa","^(a()*)*",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaa","^(?:a(?:(?:))*)*",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaa","^(?:a(?:(?:))*)*",[{parts,
                                                                                                                                                                                        2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaa","^(?:a(?:(?:))*)*",[]))),
    ok.
run36() ->
    <<":a">> = iolist_to_binary(join(re:split("aaaa","^(a()+)+",[trim]))),
    <<":a::">> = iolist_to_binary(join(re:split("aaaa","^(a()+)+",[{parts,
                                                                                                                                                                        2}]))),
    <<":a::">> = iolist_to_binary(join(re:split("aaaa","^(a()+)+",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaa","^(?:a(?:(?:))+)+",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaa","^(?:a(?:(?:))+)+",[{parts,
                                                                                                                                                                                        2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaa","^(?:a(?:(?:))+)+",[]))),
    <<":a">> = iolist_to_binary(join(re:split("abbD","(a){0,3}(?(1)b|(c|))*D",[trim]))),
    <<":a::">> = iolist_to_binary(join(re:split("abbD","(a){0,3}(?(1)b|(c|))*D",[{parts,
                                                                                                                                                                                                    2}]))),
    <<":a::">> = iolist_to_binary(join(re:split("abbD","(a){0,3}(?(1)b|(c|))*D",[]))),
    <<"">> = iolist_to_binary(join(re:split("ccccD","(a){0,3}(?(1)b|(c|))*D",[trim]))),
    <<":::">> = iolist_to_binary(join(re:split("ccccD","(a){0,3}(?(1)b|(c|))*D",[{parts,
                                                                                                                                                                                                      2}]))),
    <<":::">> = iolist_to_binary(join(re:split("ccccD","(a){0,3}(?(1)b|(c|))*D",[]))),
    <<"">> = iolist_to_binary(join(re:split("D","(a){0,3}(?(1)b|(c|))*D",[trim]))),
    <<":::">> = iolist_to_binary(join(re:split("D","(a){0,3}(?(1)b|(c|))*D",[{parts,
                                                                                                                                                                                              2}]))),
    <<":::">> = iolist_to_binary(join(re:split("D","(a){0,3}(?(1)b|(c|))*D",[]))),
    <<"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","(a|)*\\d",[trim]))),
    <<"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","(a|)*\\d",[{parts,
                                                                                                                                                                                                                                                                                         2}]))),
    <<"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","(a|)*\\d",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4","(a|)*\\d",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4","(a|)*\\d",[{parts,
                                                                                                                                                                                                                                                                                           2}]))),
    <<"::">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4","(a|)*\\d",[]))),
    <<"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","(?>a|)*\\d",[trim]))),
    <<"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","(?>a|)*\\d",[{parts,
                                                                                                                                                                                                                                                                                             2}]))),
    <<"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","(?>a|)*\\d",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4","(?>a|)*\\d",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4","(?>a|)*\\d",[{parts,
                                                                                                                                                                                                                                                                                               2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4","(?>a|)*\\d",[]))),
    <<"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","(?:a|)*\\d",[trim]))),
    <<"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","(?:a|)*\\d",[{parts,
                                                                                                                                                                                                                                                                                             2}]))),
    <<"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","(?:a|)*\\d",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4","(?:a|)*\\d",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4","(?:a|)*\\d",[{parts,
                                                                                                                                                                                                                                                                                               2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4","(?:a|)*\\d",[]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","\\Z",[trim]))),
    <<"abc:">> = iolist_to_binary(join(re:split("abc","\\Z",[{parts,
                                                                                                                                                             2}]))),
    <<"abc:">> = iolist_to_binary(join(re:split("abc","\\Z",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc","^(?s)(?>.*)(?<!\\n)",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","^(?s)(?>.*)(?<!\\n)",[{parts,
                                                                                                                                                                                             2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","^(?s)(?>.*)(?<!\\n)",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc","^(?s)(?>.*)(?<!\\n)",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","^(?s)(?>.*)(?<!\\n)",[{parts,
                                                                                                                                                                                             2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","^(?s)(?>.*)(?<!\\n)",[]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","^(?![^\\n]*\\n\\z)",[trim]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","^(?![^\\n]*\\n\\z)",[{parts,
                                                                                                                                                                                             2}]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","^(?![^\\n]*\\n\\z)",[]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","^(?![^\\n]*\\n\\z)",[trim]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","^(?![^\\n]*\\n\\z)",[{parts,
                                                                                                                                                                                             2}]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","^(?![^\\n]*\\n\\z)",[]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","\\z(?<!\\n)",[trim]))),
    <<"abc:">> = iolist_to_binary(join(re:split("abc","\\z(?<!\\n)",[{parts,
                                                                                                                                                                              2}]))),
    <<"abc:">> = iolist_to_binary(join(re:split("abc","\\z(?<!\\n)",[]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","\\z(?<!\\n)",[trim]))),
    <<"abc:">> = iolist_to_binary(join(re:split("abc","\\z(?<!\\n)",[{parts,
                                                                                                                                                                              2}]))),
    <<"abc:">> = iolist_to_binary(join(re:split("abc","\\z(?<!\\n)",[]))),
    <<"">> = iolist_to_binary(join(re:split("abcd","(.*(.)?)*",[trim]))),
    <<":::">> = iolist_to_binary(join(re:split("abcd","(.*(.)?)*",[{parts,
                                                                                                                                                                          2}]))),
    <<":::">> = iolist_to_binary(join(re:split("abcd","(.*(.)?)*",[]))),
    <<"a:::b:::c:::d">> = iolist_to_binary(join(re:split("abcd","( (A | (?(1)0|) )*   )",[extended,
                                                                                                                                                                                                  trim]))),
    <<"a:::bcd">> = iolist_to_binary(join(re:split("abcd","( (A | (?(1)0|) )*   )",[extended,
                                                                                                                                                                                                    {parts,
                                                                                                                                                                                                     2}]))),
    <<"a:::b:::c:::d:::">> = iolist_to_binary(join(re:split("abcd","( (A | (?(1)0|) )*   )",[extended]))),
    <<"a:::b:::c:::d">> = iolist_to_binary(join(re:split("abcd","( ( (?(1)0|) )*   )",[extended,
                                                                                                                                                                                            trim]))),
    <<"a:::bcd">> = iolist_to_binary(join(re:split("abcd","( ( (?(1)0|) )*   )",[extended,
                                                                                                                                                                                              {parts,
                                                                                                                                                                                               2}]))),
    <<"a:::b:::c:::d:::">> = iolist_to_binary(join(re:split("abcd","( ( (?(1)0|) )*   )",[extended]))),
    <<"a::b::c::d">> = iolist_to_binary(join(re:split("abcd","(  (?(1)0|)*   )",[extended,
                                                                                                                                                                                      trim]))),
    <<"a::bcd">> = iolist_to_binary(join(re:split("abcd","(  (?(1)0|)*   )",[extended,
                                                                                                                                                                                        {parts,
                                                                                                                                                                                         2}]))),
    <<"a::b::c::d::">> = iolist_to_binary(join(re:split("abcd","(  (?(1)0|)*   )",[extended]))),
    <<"">> = iolist_to_binary(join(re:split("a]","[[:abcd:xyz]]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a]","[[:abcd:xyz]]",[{parts,
                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("a]","[[:abcd:xyz]]",[]))),
    <<"">> = iolist_to_binary(join(re:split(":]","[[:abcd:xyz]]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split(":]","[[:abcd:xyz]]",[{parts,
                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split(":]","[[:abcd:xyz]]",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","[abc[:x\\]pqr]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("a","[abc[:x\\]pqr]",[{parts,
                                                                                                                                                                               2}]))),
    <<":">> = iolist_to_binary(join(re:split("a","[abc[:x\\]pqr]",[]))),
    <<"">> = iolist_to_binary(join(re:split("[","[abc[:x\\]pqr]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("[","[abc[:x\\]pqr]",[{parts,
                                                                                                                                                                               2}]))),
    <<":">> = iolist_to_binary(join(re:split("[","[abc[:x\\]pqr]",[]))),
    <<"">> = iolist_to_binary(join(re:split(":","[abc[:x\\]pqr]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split(":","[abc[:x\\]pqr]",[{parts,
                                                                                                                                                                               2}]))),
    <<":">> = iolist_to_binary(join(re:split(":","[abc[:x\\]pqr]",[]))),
    <<"">> = iolist_to_binary(join(re:split("]","[abc[:x\\]pqr]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("]","[abc[:x\\]pqr]",[{parts,
                                                                                                                                                                               2}]))),
    <<":">> = iolist_to_binary(join(re:split("]","[abc[:x\\]pqr]",[]))),
    <<"">> = iolist_to_binary(join(re:split("p","[abc[:x\\]pqr]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("p","[abc[:x\\]pqr]",[{parts,
                                                                                                                                                                               2}]))),
    <<":">> = iolist_to_binary(join(re:split("p","[abc[:x\\]pqr]",[]))),
    <<"fooabcfoo">> = iolist_to_binary(join(re:split("fooabcfoo",".*[op][xyz]",[trim]))),
    <<"fooabcfoo">> = iolist_to_binary(join(re:split("fooabcfoo",".*[op][xyz]",[{parts,
                                                                                                                                                                                        2}]))),
    <<"fooabcfoo">> = iolist_to_binary(join(re:split("fooabcfoo",".*[op][xyz]",[]))),
    <<"adc">> = iolist_to_binary(join(re:split("adc","(?(?=.*b)b|^)",[trim]))),
    <<"adc">> = iolist_to_binary(join(re:split("adc","(?(?=.*b)b|^)",[{parts,
                                                                                                                                                                                2}]))),
    <<"adc">> = iolist_to_binary(join(re:split("adc","(?(?=.*b)b|^)",[]))),
    <<"a:c">> = iolist_to_binary(join(re:split("abc","(?(?=.*b)b|^)",[trim]))),
    <<"a:c">> = iolist_to_binary(join(re:split("abc","(?(?=.*b)b|^)",[{parts,
                                                                                                                                                                                2}]))),
    <<"a:c">> = iolist_to_binary(join(re:split("abc","(?(?=.*b)b|^)",[]))),
    <<"adc">> = iolist_to_binary(join(re:split("adc","(?(?=^.*b)b|^)",[trim]))),
    <<"adc">> = iolist_to_binary(join(re:split("adc","(?(?=^.*b)b|^)",[{parts,
                                                                                                                                                                                  2}]))),
    <<"adc">> = iolist_to_binary(join(re:split("adc","(?(?=^.*b)b|^)",[]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(?(?=^.*b)b|^)",[trim]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(?(?=^.*b)b|^)",[{parts,
                                                                                                                                                                                  2}]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(?(?=^.*b)b|^)",[]))),
    <<"a:d:c">> = iolist_to_binary(join(re:split("adc","(?(?=.*b)b|^)*",[trim]))),
    <<"a:dc">> = iolist_to_binary(join(re:split("adc","(?(?=.*b)b|^)*",[{parts,
                                                                                                                                                                                  2}]))),
    <<"a:d:c:">> = iolist_to_binary(join(re:split("adc","(?(?=.*b)b|^)*",[]))),
    <<"a:c">> = iolist_to_binary(join(re:split("abc","(?(?=.*b)b|^)*",[trim]))),
    <<"a:c">> = iolist_to_binary(join(re:split("abc","(?(?=.*b)b|^)*",[{parts,
                                                                                                                                                                                  2}]))),
    <<"a:c:">> = iolist_to_binary(join(re:split("abc","(?(?=.*b)b|^)*",[]))),
    ok.
run37() ->
    <<"adc">> = iolist_to_binary(join(re:split("adc","(?(?=.*b)b|^)+",[trim]))),
    <<"adc">> = iolist_to_binary(join(re:split("adc","(?(?=.*b)b|^)+",[{parts,
                                                                                                                                                                                  2}]))),
    <<"adc">> = iolist_to_binary(join(re:split("adc","(?(?=.*b)b|^)+",[]))),
    <<"a:c">> = iolist_to_binary(join(re:split("abc","(?(?=.*b)b|^)+",[trim]))),
    <<"a:c">> = iolist_to_binary(join(re:split("abc","(?(?=.*b)b|^)+",[{parts,
                                                                                                                                                                                  2}]))),
    <<"a:c">> = iolist_to_binary(join(re:split("abc","(?(?=.*b)b|^)+",[]))),
    <<"a:c">> = iolist_to_binary(join(re:split("abc","(?(?=b).*b|^d)",[trim]))),
    <<"a:c">> = iolist_to_binary(join(re:split("abc","(?(?=b).*b|^d)",[{parts,
                                                                                                                                                                                  2}]))),
    <<"a:c">> = iolist_to_binary(join(re:split("abc","(?(?=b).*b|^d)",[]))),
    <<":c">> = iolist_to_binary(join(re:split("abc","(?(?=.*b).*b|^d)",[trim]))),
    <<":c">> = iolist_to_binary(join(re:split("abc","(?(?=.*b).*b|^d)",[{parts,
                                                                                                                                                                                      2}]))),
    <<":c">> = iolist_to_binary(join(re:split("abc","(?(?=.*b).*b|^d)",[]))),
    <<"">> = iolist_to_binary(join(re:split("%ab%","^%((?(?=[a])[^%])|b)*%$",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("%ab%","^%((?(?=[a])[^%])|b)*%$",[{parts,
                                                                                                                                                                                                       2}]))),
    <<"::">> = iolist_to_binary(join(re:split("%ab%","^%((?(?=[a])[^%])|b)*%$",[]))),
    <<"X:X">> = iolist_to_binary(join(re:split("XabX","(?i)a(?-i)b|c",[trim]))),
    <<"X:X">> = iolist_to_binary(join(re:split("XabX","(?i)a(?-i)b|c",[{parts,
                                                                                                                                                                                  2}]))),
    <<"X:X">> = iolist_to_binary(join(re:split("XabX","(?i)a(?-i)b|c",[]))),
    <<"X:X">> = iolist_to_binary(join(re:split("XAbX","(?i)a(?-i)b|c",[trim]))),
    <<"X:X">> = iolist_to_binary(join(re:split("XAbX","(?i)a(?-i)b|c",[{parts,
                                                                                                                                                                                  2}]))),
    <<"X:X">> = iolist_to_binary(join(re:split("XAbX","(?i)a(?-i)b|c",[]))),
    <<"C:C">> = iolist_to_binary(join(re:split("CcC","(?i)a(?-i)b|c",[trim]))),
    <<"C:C">> = iolist_to_binary(join(re:split("CcC","(?i)a(?-i)b|c",[{parts,
                                                                                                                                                                                2}]))),
    <<"C:C">> = iolist_to_binary(join(re:split("CcC","(?i)a(?-i)b|c",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?i)a(?-i)b|c",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?i)a(?-i)b|c",[{parts,
                                                                                                                                                                                              2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?i)a(?-i)b|c",[]))),
    <<"XABX">> = iolist_to_binary(join(re:split("XABX","(?i)a(?-i)b|c",[trim]))),
    <<"XABX">> = iolist_to_binary(join(re:split("XABX","(?i)a(?-i)b|c",[{parts,
                                                                                                                                                                                  2}]))),
    <<"XABX">> = iolist_to_binary(join(re:split("XABX","(?i)a(?-i)b|c",[]))),
    <<"">> = iolist_to_binary(join(re:split("

","[\\x00-\\xff\\s]+",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("

","[\\x00-\\xff\\s]+",[{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("

","[\\x00-\\xff\\s]+",[]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(abc)\\1",[caseless,
                                                                                                                                                                     trim]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(abc)\\1",[caseless,
                                                                                                                                                                       {parts,
                                                                                                                                                                        2}]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(abc)\\1",[caseless]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(abc)\\1",[trim]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(abc)\\1",[{parts,
                                                                                                                                                                       2}]))),
    <<"abc">> = iolist_to_binary(join(re:split("abc","(abc)\\1",[]))),
    <<":a">> = iolist_to_binary(join(re:split("12abc","[^a]*",[caseless,
                                                                                                                                                                  trim]))),
    <<":abc">> = iolist_to_binary(join(re:split("12abc","[^a]*",[caseless,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("12abc","[^a]*",[caseless]))),
    <<":A">> = iolist_to_binary(join(re:split("12ABC","[^a]*",[caseless,
                                                                                                                                                                  trim]))),
    <<":ABC">> = iolist_to_binary(join(re:split("12ABC","[^a]*",[caseless,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<":A:">> = iolist_to_binary(join(re:split("12ABC","[^a]*",[caseless]))),
    <<":a">> = iolist_to_binary(join(re:split("12abc","[^a]*+",[caseless,
                                                                                                                                                                    trim]))),
    <<":abc">> = iolist_to_binary(join(re:split("12abc","[^a]*+",[caseless,
                                                                                                                                                                      {parts,
                                                                                                                                                                       2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("12abc","[^a]*+",[caseless]))),
    <<":A">> = iolist_to_binary(join(re:split("12ABC","[^a]*+",[caseless,
                                                                                                                                                                    trim]))),
    <<":ABC">> = iolist_to_binary(join(re:split("12ABC","[^a]*+",[caseless,
                                                                                                                                                                      {parts,
                                                                                                                                                                       2}]))),
    <<":A:">> = iolist_to_binary(join(re:split("12ABC","[^a]*+",[caseless]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","[^a]*?X",[caseless,
                                                                                                                                                                                trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","[^a]*?X",[caseless,
                                                                                                                                                                                  {parts,
                                                                                                                                                                                   2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","[^a]*?X",[caseless]))),
    <<"12abc">> = iolist_to_binary(join(re:split("12abc","[^a]*?X",[caseless,
                                                                                                                                                                      trim]))),
    <<"12abc">> = iolist_to_binary(join(re:split("12abc","[^a]*?X",[caseless,
                                                                                                                                                                        {parts,
                                                                                                                                                                         2}]))),
    <<"12abc">> = iolist_to_binary(join(re:split("12abc","[^a]*?X",[caseless]))),
    <<"12ABC">> = iolist_to_binary(join(re:split("12ABC","[^a]*?X",[caseless,
                                                                                                                                                                      trim]))),
    <<"12ABC">> = iolist_to_binary(join(re:split("12ABC","[^a]*?X",[caseless,
                                                                                                                                                                        {parts,
                                                                                                                                                                         2}]))),
    <<"12ABC">> = iolist_to_binary(join(re:split("12ABC","[^a]*?X",[caseless]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","[^a]+?X",[caseless,
                                                                                                                                                                                trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","[^a]+?X",[caseless,
                                                                                                                                                                                  {parts,
                                                                                                                                                                                   2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","[^a]+?X",[caseless]))),
    <<"12abc">> = iolist_to_binary(join(re:split("12abc","[^a]+?X",[caseless,
                                                                                                                                                                      trim]))),
    <<"12abc">> = iolist_to_binary(join(re:split("12abc","[^a]+?X",[caseless,
                                                                                                                                                                        {parts,
                                                                                                                                                                         2}]))),
    <<"12abc">> = iolist_to_binary(join(re:split("12abc","[^a]+?X",[caseless]))),
    <<"12ABC">> = iolist_to_binary(join(re:split("12ABC","[^a]+?X",[caseless,
                                                                                                                                                                      trim]))),
    <<"12ABC">> = iolist_to_binary(join(re:split("12ABC","[^a]+?X",[caseless,
                                                                                                                                                                        {parts,
                                                                                                                                                                         2}]))),
    <<"12ABC">> = iolist_to_binary(join(re:split("12ABC","[^a]+?X",[caseless]))),
    <<"12a:b">> = iolist_to_binary(join(re:split("12aXbcX","[^a]?X",[caseless,
                                                                                                                                                                        trim]))),
    <<"12a:bcX">> = iolist_to_binary(join(re:split("12aXbcX","[^a]?X",[caseless,
                                                                                                                                                                          {parts,
                                                                                                                                                                           2}]))),
    <<"12a:b:">> = iolist_to_binary(join(re:split("12aXbcX","[^a]?X",[caseless]))),
    <<"12A:B">> = iolist_to_binary(join(re:split("12AXBCX","[^a]?X",[caseless,
                                                                                                                                                                        trim]))),
    <<"12A:BCX">> = iolist_to_binary(join(re:split("12AXBCX","[^a]?X",[caseless,
                                                                                                                                                                          {parts,
                                                                                                                                                                           2}]))),
    <<"12A:B:">> = iolist_to_binary(join(re:split("12AXBCX","[^a]?X",[caseless]))),
    <<"B">> = iolist_to_binary(join(re:split("BCX","[^a]?X",[caseless,
                                                                                                                                                                trim]))),
    <<"B:">> = iolist_to_binary(join(re:split("BCX","[^a]?X",[caseless,
                                                                                                                                                                  {parts,
                                                                                                                                                                   2}]))),
    <<"B:">> = iolist_to_binary(join(re:split("BCX","[^a]?X",[caseless]))),
    <<"12a:b">> = iolist_to_binary(join(re:split("12aXbcX","[^a]??X",[caseless,
                                                                                                                                                                          trim]))),
    <<"12a:bcX">> = iolist_to_binary(join(re:split("12aXbcX","[^a]??X",[caseless,
                                                                                                                                                                            {parts,
                                                                                                                                                                             2}]))),
    <<"12a:b:">> = iolist_to_binary(join(re:split("12aXbcX","[^a]??X",[caseless]))),
    <<"12A:B">> = iolist_to_binary(join(re:split("12AXBCX","[^a]??X",[caseless,
                                                                                                                                                                          trim]))),
    <<"12A:BCX">> = iolist_to_binary(join(re:split("12AXBCX","[^a]??X",[caseless,
                                                                                                                                                                            {parts,
                                                                                                                                                                             2}]))),
    <<"12A:B:">> = iolist_to_binary(join(re:split("12AXBCX","[^a]??X",[caseless]))),
    <<"B">> = iolist_to_binary(join(re:split("BCX","[^a]??X",[caseless,
                                                                                                                                                                  trim]))),
    <<"B:">> = iolist_to_binary(join(re:split("BCX","[^a]??X",[caseless,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<"B:">> = iolist_to_binary(join(re:split("BCX","[^a]??X",[caseless]))),
    <<"12aXb">> = iolist_to_binary(join(re:split("12aXbcX","[^a]?+X",[caseless,
                                                                                                                                                                          trim]))),
    <<"12aXb:">> = iolist_to_binary(join(re:split("12aXbcX","[^a]?+X",[caseless,
                                                                                                                                                                            {parts,
                                                                                                                                                                             2}]))),
    <<"12aXb:">> = iolist_to_binary(join(re:split("12aXbcX","[^a]?+X",[caseless]))),
    <<"12AXB">> = iolist_to_binary(join(re:split("12AXBCX","[^a]?+X",[caseless,
                                                                                                                                                                          trim]))),
    <<"12AXB:">> = iolist_to_binary(join(re:split("12AXBCX","[^a]?+X",[caseless,
                                                                                                                                                                            {parts,
                                                                                                                                                                             2}]))),
    <<"12AXB:">> = iolist_to_binary(join(re:split("12AXBCX","[^a]?+X",[caseless]))),
    <<"B">> = iolist_to_binary(join(re:split("BCX","[^a]?+X",[caseless,
                                                                                                                                                                  trim]))),
    <<"B:">> = iolist_to_binary(join(re:split("BCX","[^a]?+X",[caseless,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<"B:">> = iolist_to_binary(join(re:split("BCX","[^a]?+X",[caseless]))),
    <<"a">> = iolist_to_binary(join(re:split("abcdef","[^a]{2,3}",[caseless,
                                                                                                                                                                            trim]))),
    <<"a:ef">> = iolist_to_binary(join(re:split("abcdef","[^a]{2,3}",[caseless,
                                                                                                                                                                              {parts,
                                                                                                                                                                               2}]))),
    <<"a::">> = iolist_to_binary(join(re:split("abcdef","[^a]{2,3}",[caseless]))),
    <<"A">> = iolist_to_binary(join(re:split("ABCDEF","[^a]{2,3}",[caseless,
                                                                                                                                                                            trim]))),
    <<"A:EF">> = iolist_to_binary(join(re:split("ABCDEF","[^a]{2,3}",[caseless,
                                                                                                                                                                              {parts,
                                                                                                                                                                               2}]))),
    <<"A::">> = iolist_to_binary(join(re:split("ABCDEF","[^a]{2,3}",[caseless]))),
    <<"a::f">> = iolist_to_binary(join(re:split("abcdef","[^a]{2,3}?",[caseless,
                                                                                                                                                                              trim]))),
    <<"a:def">> = iolist_to_binary(join(re:split("abcdef","[^a]{2,3}?",[caseless,
                                                                                                                                                                                {parts,
                                                                                                                                                                                 2}]))),
    <<"a::f">> = iolist_to_binary(join(re:split("abcdef","[^a]{2,3}?",[caseless]))),
    <<"A::F">> = iolist_to_binary(join(re:split("ABCDEF","[^a]{2,3}?",[caseless,
                                                                                                                                                                              trim]))),
    <<"A:DEF">> = iolist_to_binary(join(re:split("ABCDEF","[^a]{2,3}?",[caseless,
                                                                                                                                                                                {parts,
                                                                                                                                                                                 2}]))),
    <<"A::F">> = iolist_to_binary(join(re:split("ABCDEF","[^a]{2,3}?",[caseless]))),
    <<"a">> = iolist_to_binary(join(re:split("abcdef","[^a]{2,3}+",[caseless,
                                                                                                                                                                              trim]))),
    <<"a:ef">> = iolist_to_binary(join(re:split("abcdef","[^a]{2,3}+",[caseless,
                                                                                                                                                                                {parts,
                                                                                                                                                                                 2}]))),
    <<"a::">> = iolist_to_binary(join(re:split("abcdef","[^a]{2,3}+",[caseless]))),
    <<"A">> = iolist_to_binary(join(re:split("ABCDEF","[^a]{2,3}+",[caseless,
                                                                                                                                                                              trim]))),
    <<"A:EF">> = iolist_to_binary(join(re:split("ABCDEF","[^a]{2,3}+",[caseless,
                                                                                                                                                                                {parts,
                                                                                                                                                                                 2}]))),
    <<"A::">> = iolist_to_binary(join(re:split("ABCDEF","[^a]{2,3}+",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("Z","((a|)+)+Z",[trim]))),
    <<":::">> = iolist_to_binary(join(re:split("Z","((a|)+)+Z",[{parts,
                                                                                                                                                                    2}]))),
    <<":::">> = iolist_to_binary(join(re:split("Z","((a|)+)+Z",[]))),
    ok.
run38() ->
    <<"::a">> = iolist_to_binary(join(re:split("ac","(a)b|(a)c",[trim]))),
    <<"::a:">> = iolist_to_binary(join(re:split("ac","(a)b|(a)c",[{parts,
                                                                                                                                                                      2}]))),
    <<"::a:">> = iolist_to_binary(join(re:split("ac","(a)b|(a)c",[]))),
    <<"::a">> = iolist_to_binary(join(re:split("ac","(?>(a))b|(a)c",[trim]))),
    <<"::a:">> = iolist_to_binary(join(re:split("ac","(?>(a))b|(a)c",[{parts,
                                                                                                                                                                              2}]))),
    <<"::a:">> = iolist_to_binary(join(re:split("ac","(?>(a))b|(a)c",[]))),
    <<"::a">> = iolist_to_binary(join(re:split("ac","(?=(a))ab|(a)c",[trim]))),
    <<"::a:">> = iolist_to_binary(join(re:split("ac","(?=(a))ab|(a)c",[{parts,
                                                                                                                                                                                2}]))),
    <<"::a:">> = iolist_to_binary(join(re:split("ac","(?=(a))ab|(a)c",[]))),
    <<":ac::a">> = iolist_to_binary(join(re:split("ac","((?>(a))b|(a)c)",[trim]))),
    <<":ac::a:">> = iolist_to_binary(join(re:split("ac","((?>(a))b|(a)c)",[{parts,
                                                                                                                                                                                  2}]))),
    <<":ac::a:">> = iolist_to_binary(join(re:split("ac","((?>(a))b|(a)c)",[]))),
    <<":ac::a">> = iolist_to_binary(join(re:split("ac","((?>(a))b|(a)c)++",[trim]))),
    <<":ac::a:">> = iolist_to_binary(join(re:split("ac","((?>(a))b|(a)c)++",[{parts,
                                                                                                                                                                                      2}]))),
    <<":ac::a:">> = iolist_to_binary(join(re:split("ac","((?>(a))b|(a)c)++",[]))),
    <<"::a">> = iolist_to_binary(join(re:split("ac","(?:(?>(a))b|(a)c)++",[trim]))),
    <<"::a:">> = iolist_to_binary(join(re:split("ac","(?:(?>(a))b|(a)c)++",[{parts,
                                                                                                                                                                                          2}]))),
    <<"::a:">> = iolist_to_binary(join(re:split("ac","(?:(?>(a))b|(a)c)++",[]))),
    <<"::a:ac">> = iolist_to_binary(join(re:split("ac","(?=(?>(a))b|(a)c)(..)",[trim]))),
    <<"::a:ac:">> = iolist_to_binary(join(re:split("ac","(?=(?>(a))b|(a)c)(..)",[{parts,
                                                                                                                                                                                              2}]))),
    <<"::a:ac:">> = iolist_to_binary(join(re:split("ac","(?=(?>(a))b|(a)c)(..)",[]))),
    <<"::a">> = iolist_to_binary(join(re:split("ac","(?>(?>(a))b|(a)c)",[trim]))),
    <<"::a:">> = iolist_to_binary(join(re:split("ac","(?>(?>(a))b|(a)c)",[{parts,
                                                                                                                                                                                      2}]))),
    <<"::a:">> = iolist_to_binary(join(re:split("ac","(?>(?>(a))b|(a)c)",[]))),
    <<":aaaabaaabaabab:aaa:aabab">> = iolist_to_binary(join(re:split("aaaabaaabaabab","((?>(a+)b)+(aabab))",[trim]))),
    <<":aaaabaaabaabab:aaa:aabab:">> = iolist_to_binary(join(re:split("aaaabaaabaabab","((?>(a+)b)+(aabab))",[{parts,
                                                                                                                                                                                                                  2}]))),
    <<":aaaabaaabaabab:aaa:aabab:">> = iolist_to_binary(join(re:split("aaaabaaabaabab","((?>(a+)b)+(aabab))",[]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","(?>a+|ab)+?c",[trim]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","(?>a+|ab)+?c",[{parts,
                                                                                                                                                                                2}]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","(?>a+|ab)+?c",[]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","(?>a+|ab)+c",[trim]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","(?>a+|ab)+c",[{parts,
                                                                                                                                                                              2}]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","(?>a+|ab)+c",[]))),
    <<"">> = iolist_to_binary(join(re:split("aabc","(?:a+|ab)+c",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aabc","(?:a+|ab)+c",[{parts,
                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("aabc","(?:a+|ab)+c",[]))),
    <<":a">> = iolist_to_binary(join(re:split("a","(?(?=(a))a)",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("a","(?(?=(a))a)",[{parts,
                                                                                                                                                                        2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("a","(?(?=(a))a)",[]))),
    <<":a:b">> = iolist_to_binary(join(re:split("ab","(?(?=(a))a)(b)",[trim]))),
    <<":a:b:">> = iolist_to_binary(join(re:split("ab","(?(?=(a))a)(b)",[{parts,
                                                                                                                                                                                2}]))),
    <<":a:b:">> = iolist_to_binary(join(re:split("ab","(?(?=(a))a)(b)",[]))),
    <<"aaaabc">> = iolist_to_binary(join(re:split("aaaabc","^(?:a|ab)++c",[trim]))),
    <<"aaaabc">> = iolist_to_binary(join(re:split("aaaabc","^(?:a|ab)++c",[{parts,
                                                                                                                                                                                    2}]))),
    <<"aaaabc">> = iolist_to_binary(join(re:split("aaaabc","^(?:a|ab)++c",[]))),
    <<"aaaabc">> = iolist_to_binary(join(re:split("aaaabc","^(?>a|ab)++c",[trim]))),
    <<"aaaabc">> = iolist_to_binary(join(re:split("aaaabc","^(?>a|ab)++c",[{parts,
                                                                                                                                                                                    2}]))),
    <<"aaaabc">> = iolist_to_binary(join(re:split("aaaabc","^(?>a|ab)++c",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaabc","^(?:a|ab)+c",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaabc","^(?:a|ab)+c",[{parts,
                                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaabc","^(?:a|ab)+c",[]))),
    <<"">> = iolist_to_binary(join(re:split("xyz","(?=abc){0}xyz",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("xyz","(?=abc){0}xyz",[{parts,
                                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("xyz","(?=abc){0}xyz",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?=abc){1}xyz",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?=abc){1}xyz",[{parts,
                                                                                                                                                                                              2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?=abc){1}xyz",[]))),
    <<"xyz">> = iolist_to_binary(join(re:split("xyz","(?=abc){1}xyz",[trim]))),
    <<"xyz">> = iolist_to_binary(join(re:split("xyz","(?=abc){1}xyz",[{parts,
                                                                                                                                                                                2}]))),
    <<"xyz">> = iolist_to_binary(join(re:split("xyz","(?=abc){1}xyz",[]))),
    <<":a">> = iolist_to_binary(join(re:split("ab","(?=(a))?.",[trim]))),
    <<":a:b">> = iolist_to_binary(join(re:split("ab","(?=(a))?.",[{parts,
                                                                                                                                                                      2}]))),
    <<":a:::">> = iolist_to_binary(join(re:split("ab","(?=(a))?.",[]))),
    <<"">> = iolist_to_binary(join(re:split("bc","(?=(a))?.",[trim]))),
    <<"::c">> = iolist_to_binary(join(re:split("bc","(?=(a))?.",[{parts,
                                                                                                                                                                      2}]))),
    <<"::::">> = iolist_to_binary(join(re:split("bc","(?=(a))?.",[]))),
    ok.
run39() ->
    <<"">> = iolist_to_binary(join(re:split("ab","(?=(a))??.",[trim]))),
    <<"::b">> = iolist_to_binary(join(re:split("ab","(?=(a))??.",[{parts,
                                                                                                                                                                        2}]))),
    <<"::::">> = iolist_to_binary(join(re:split("ab","(?=(a))??.",[]))),
    <<"">> = iolist_to_binary(join(re:split("bc","(?=(a))??.",[trim]))),
    <<"::c">> = iolist_to_binary(join(re:split("bc","(?=(a))??.",[{parts,
                                                                                                                                                                        2}]))),
    <<"::::">> = iolist_to_binary(join(re:split("bc","(?=(a))??.",[]))),
    <<":b">> = iolist_to_binary(join(re:split("abd","^(?=(?1))?[az]([abc])d",[trim]))),
    <<":b:">> = iolist_to_binary(join(re:split("abd","^(?=(?1))?[az]([abc])d",[{parts,
                                                                                                                                                                                                  2}]))),
    <<":b:">> = iolist_to_binary(join(re:split("abd","^(?=(?1))?[az]([abc])d",[]))),
    <<":c:xx">> = iolist_to_binary(join(re:split("zcdxx","^(?=(?1))?[az]([abc])d",[trim]))),
    <<":c:xx">> = iolist_to_binary(join(re:split("zcdxx","^(?=(?1))?[az]([abc])d",[{parts,
                                                                                                                                                                                                      2}]))),
    <<":c:xx">> = iolist_to_binary(join(re:split("zcdxx","^(?=(?1))?[az]([abc])d",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaaa","^(?!a){0}\\w+",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaaa","^(?!a){0}\\w+",[{parts,
                                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaaa","^(?!a){0}\\w+",[]))),
    <<"abc:abc">> = iolist_to_binary(join(re:split("abcxyz","(?<=(abc))?xyz",[trim]))),
    <<"abc:abc:">> = iolist_to_binary(join(re:split("abcxyz","(?<=(abc))?xyz",[{parts,
                                                                                                                                                                                        2}]))),
    <<"abc:abc:">> = iolist_to_binary(join(re:split("abcxyz","(?<=(abc))?xyz",[]))),
    <<"pqr">> = iolist_to_binary(join(re:split("pqrxyz","(?<=(abc))?xyz",[trim]))),
    <<"pqr::">> = iolist_to_binary(join(re:split("pqrxyz","(?<=(abc))?xyz",[{parts,
                                                                                                                                                                                        2}]))),
    <<"pqr::">> = iolist_to_binary(join(re:split("pqrxyz","(?<=(abc))?xyz",[]))),
    <<"">> = iolist_to_binary(join(re:split("ggg<<<aaa>>>","^[\\g<a>]+",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("ggg<<<aaa>>>","^[\\g<a>]+",[{parts,
                                                                                                                                                                                             2}]))),
    <<":">> = iolist_to_binary(join(re:split("ggg<<<aaa>>>","^[\\g<a>]+",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^[\\g<a>]+",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^[\\g<a>]+",[{parts,
                                                                                                                                                                                         2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^[\\g<a>]+",[]))),
    <<"\\ga">> = iolist_to_binary(join(re:split("\\ga","^[\\g<a>]+",[trim]))),
    <<"\\ga">> = iolist_to_binary(join(re:split("\\ga","^[\\g<a>]+",[{parts,
                                                                                                                                                                               2}]))),
    <<"\\ga">> = iolist_to_binary(join(re:split("\\ga","^[\\g<a>]+",[]))),
    <<":xyz">> = iolist_to_binary(join(re:split("gggagagaxyz","^[\\ga]+",[trim]))),
    <<":xyz">> = iolist_to_binary(join(re:split("gggagagaxyz","^[\\ga]+",[{parts,
                                                                                                                                                                                       2}]))),
    <<":xyz">> = iolist_to_binary(join(re:split("gggagagaxyz","^[\\ga]+",[]))),
    <<":Z">> = iolist_to_binary(join(re:split("aaaa444:::Z","^[:a[:digit:]]+",[trim]))),
    <<":Z">> = iolist_to_binary(join(re:split("aaaa444:::Z","^[:a[:digit:]]+",[{parts,
                                                                                                                                                                                                    2}]))),
    <<":Z">> = iolist_to_binary(join(re:split("aaaa444:::Z","^[:a[:digit:]]+",[]))),
    <<":Z">> = iolist_to_binary(join(re:split("aaaa444:::bbbZ","^[:a[:digit:]:b]+",[trim]))),
    <<":Z">> = iolist_to_binary(join(re:split("aaaa444:::bbbZ","^[:a[:digit:]:b]+",[{parts,
                                                                                                                                                                                                              2}]))),
    <<":Z">> = iolist_to_binary(join(re:split("aaaa444:::bbbZ","^[:a[:digit:]:b]+",[]))),
    <<"">> = iolist_to_binary(join(re:split(":xxx:","[:a]xxx[b:]",[trim]))),
    <<":">> = iolist_to_binary(join(re:split(":xxx:","[:a]xxx[b:]",[{parts,
                                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split(":xxx:","[:a]xxx[b:]",[]))),
    <<"xaa:c">> = iolist_to_binary(join(re:split("xaabc","(?<=a{2})b",[caseless,
                                                                                                                                                                            trim]))),
    <<"xaa:c">> = iolist_to_binary(join(re:split("xaabc","(?<=a{2})b",[caseless,
                                                                                                                                                                              {parts,
                                                                                                                                                                               2}]))),
    <<"xaa:c">> = iolist_to_binary(join(re:split("xaabc","(?<=a{2})b",[caseless]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<=a{2})b",[caseless,
                                                                                                                                                                                      trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<=a{2})b",[caseless,
                                                                                                                                                                                        {parts,
                                                                                                                                                                                         2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<=a{2})b",[caseless]))),
    <<"xabc">> = iolist_to_binary(join(re:split("xabc","(?<=a{2})b",[caseless,
                                                                                                                                                                          trim]))),
    <<"xabc">> = iolist_to_binary(join(re:split("xabc","(?<=a{2})b",[caseless,
                                                                                                                                                                            {parts,
                                                                                                                                                                             2}]))),
    <<"xabc">> = iolist_to_binary(join(re:split("xabc","(?<=a{2})b",[caseless]))),
    <<"xa:c">> = iolist_to_binary(join(re:split("xabc","(?<!a{2})b",[caseless,
                                                                                                                                                                          trim]))),
    <<"xa:c">> = iolist_to_binary(join(re:split("xabc","(?<!a{2})b",[caseless,
                                                                                                                                                                            {parts,
                                                                                                                                                                             2}]))),
    <<"xa:c">> = iolist_to_binary(join(re:split("xabc","(?<!a{2})b",[caseless]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<!a{2})b",[caseless,
                                                                                                                                                                                      trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<!a{2})b",[caseless,
                                                                                                                                                                                        {parts,
                                                                                                                                                                                         2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<!a{2})b",[caseless]))),
    <<"xaabc">> = iolist_to_binary(join(re:split("xaabc","(?<!a{2})b",[caseless,
                                                                                                                                                                            trim]))),
    <<"xaabc">> = iolist_to_binary(join(re:split("xaabc","(?<!a{2})b",[caseless,
                                                                                                                                                                              {parts,
                                                                                                                                                                               2}]))),
    <<"xaabc">> = iolist_to_binary(join(re:split("xaabc","(?<!a{2})b",[caseless]))),
    <<"xa ">> = iolist_to_binary(join(re:split("xa c","(?<=a\\h)c",[trim]))),
    <<"xa :">> = iolist_to_binary(join(re:split("xa c","(?<=a\\h)c",[{parts,
                                                                                                                                                                             2}]))),
    <<"xa :">> = iolist_to_binary(join(re:split("xa c","(?<=a\\h)c",[]))),
    <<"axx:c">> = iolist_to_binary(join(re:split("axxbc","(?<=[^a]{2})b",[trim]))),
    <<"axx:c">> = iolist_to_binary(join(re:split("axxbc","(?<=[^a]{2})b",[{parts,
                                                                                                                                                                                    2}]))),
    <<"axx:c">> = iolist_to_binary(join(re:split("axxbc","(?<=[^a]{2})b",[]))),
    <<"aAA:c">> = iolist_to_binary(join(re:split("aAAbc","(?<=[^a]{2})b",[trim]))),
    <<"aAA:c">> = iolist_to_binary(join(re:split("aAAbc","(?<=[^a]{2})b",[{parts,
                                                                                                                                                                                    2}]))),
    <<"aAA:c">> = iolist_to_binary(join(re:split("aAAbc","(?<=[^a]{2})b",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<=[^a]{2})b",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<=[^a]{2})b",[{parts,
                                                                                                                                                                                              2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<=[^a]{2})b",[]))),
    <<"xaabc">> = iolist_to_binary(join(re:split("xaabc","(?<=[^a]{2})b",[trim]))),
    <<"xaabc">> = iolist_to_binary(join(re:split("xaabc","(?<=[^a]{2})b",[{parts,
                                                                                                                                                                                    2}]))),
    <<"xaabc">> = iolist_to_binary(join(re:split("xaabc","(?<=[^a]{2})b",[]))),
    <<"axx:c">> = iolist_to_binary(join(re:split("axxbc","(?<=[^a]{2})b",[caseless,
                                                                                                                                                                                  trim]))),
    <<"axx:c">> = iolist_to_binary(join(re:split("axxbc","(?<=[^a]{2})b",[caseless,
                                                                                                                                                                                    {parts,
                                                                                                                                                                                     2}]))),
    <<"axx:c">> = iolist_to_binary(join(re:split("axxbc","(?<=[^a]{2})b",[caseless]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<=[^a]{2})b",[caseless,
                                                                                                                                                                                            trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<=[^a]{2})b",[caseless,
                                                                                                                                                                                              {parts,
                                                                                                                                                                                               2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<=[^a]{2})b",[caseless]))),
    <<"aAAbc">> = iolist_to_binary(join(re:split("aAAbc","(?<=[^a]{2})b",[caseless,
                                                                                                                                                                                  trim]))),
    <<"aAAbc">> = iolist_to_binary(join(re:split("aAAbc","(?<=[^a]{2})b",[caseless,
                                                                                                                                                                                    {parts,
                                                                                                                                                                                     2}]))),
    <<"aAAbc">> = iolist_to_binary(join(re:split("aAAbc","(?<=[^a]{2})b",[caseless]))),
    <<"xaabc">> = iolist_to_binary(join(re:split("xaabc","(?<=[^a]{2})b",[caseless,
                                                                                                                                                                                  trim]))),
    <<"xaabc">> = iolist_to_binary(join(re:split("xaabc","(?<=[^a]{2})b",[caseless,
                                                                                                                                                                                    {parts,
                                                                                                                                                                                     2}]))),
    <<"xaabc">> = iolist_to_binary(join(re:split("xaabc","(?<=[^a]{2})b",[caseless]))),
    <<"ab">> = iolist_to_binary(join(re:split("abc","(?<=a\\H)c",[trim]))),
    <<"ab:">> = iolist_to_binary(join(re:split("abc","(?<=a\\H)c",[{parts,
                                                                                                                                                                           2}]))),
    <<"ab:">> = iolist_to_binary(join(re:split("abc","(?<=a\\H)c",[]))),
    <<"ab">> = iolist_to_binary(join(re:split("abc","(?<=a\\V)c",[trim]))),
    <<"ab:">> = iolist_to_binary(join(re:split("abc","(?<=a\\V)c",[{parts,
                                                                                                                                                                           2}]))),
    <<"ab:">> = iolist_to_binary(join(re:split("abc","(?<=a\\V)c",[]))),
    <<"a
">> = iolist_to_binary(join(re:split("a
c","(?<=a\\v)c",[trim]))),
    <<"a
:">> = iolist_to_binary(join(re:split("a
c","(?<=a\\v)c",[{parts,2}]))),
    <<"a
:">> = iolist_to_binary(join(re:split("a
c","(?<=a\\v)c",[]))),
    <<"X:X">> = iolist_to_binary(join(re:split("XcccddYX","(?(?=c)c|d)++Y",[trim]))),
    <<"X:X">> = iolist_to_binary(join(re:split("XcccddYX","(?(?=c)c|d)++Y",[{parts,
                                                                                                                                                                                            2}]))),
    <<"X:X">> = iolist_to_binary(join(re:split("XcccddYX","(?(?=c)c|d)++Y",[]))),
    <<"X:X">> = iolist_to_binary(join(re:split("XcccddYX","(?(?=c)c|d)*+Y",[trim]))),
    <<"X:X">> = iolist_to_binary(join(re:split("XcccddYX","(?(?=c)c|d)*+Y",[{parts,
                                                                                                                                                                                            2}]))),
    <<"X:X">> = iolist_to_binary(join(re:split("XcccddYX","(?(?=c)c|d)*+Y",[]))),
    <<":aaa">> = iolist_to_binary(join(re:split("aaaaaaa","^(a{2,3}){2,}+a",[trim]))),
    <<":aaa:">> = iolist_to_binary(join(re:split("aaaaaaa","^(a{2,3}){2,}+a",[{parts,
                                                                                                                                                                                            2}]))),
    <<":aaa:">> = iolist_to_binary(join(re:split("aaaaaaa","^(a{2,3}){2,}+a",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(a{2,3}){2,}+a",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(a{2,3}){2,}+a",[{parts,
                                                                                                                                                                                                  2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(a{2,3}){2,}+a",[]))),
    <<"aaaaaa">> = iolist_to_binary(join(re:split("aaaaaa","^(a{2,3}){2,}+a",[trim]))),
    <<"aaaaaa">> = iolist_to_binary(join(re:split("aaaaaa","^(a{2,3}){2,}+a",[{parts,
                                                                                                                                                                                          2}]))),
    <<"aaaaaa">> = iolist_to_binary(join(re:split("aaaaaa","^(a{2,3}){2,}+a",[]))),
    <<"aaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaa","^(a{2,3}){2,}+a",[trim]))),
    <<"aaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaa","^(a{2,3}){2,}+a",[{parts,
                                                                                                                                                                                                2}]))),
    <<"aaaaaaaaa">> = iolist_to_binary(join(re:split("aaaaaaaaa","^(a{2,3}){2,}+a",[]))),
    ok.
run40() ->
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(a{2,3})++a",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(a{2,3})++a",[{parts,
                                                                                                                                                                                            2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(a{2,3})++a",[]))),
    <<"aaaaaa">> = iolist_to_binary(join(re:split("aaaaaa","^(a{2,3})++a",[trim]))),
    <<"aaaaaa">> = iolist_to_binary(join(re:split("aaaaaa","^(a{2,3})++a",[{parts,
                                                                                                                                                                                    2}]))),
    <<"aaaaaa">> = iolist_to_binary(join(re:split("aaaaaa","^(a{2,3})++a",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(a{2,3})*+a",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(a{2,3})*+a",[{parts,
                                                                                                                                                                                            2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(a{2,3})*+a",[]))),
    <<"aaaaaa">> = iolist_to_binary(join(re:split("aaaaaa","^(a{2,3})*+a",[trim]))),
    <<"aaaaaa">> = iolist_to_binary(join(re:split("aaaaaa","^(a{2,3})*+a",[{parts,
                                                                                                                                                                                    2}]))),
    <<"aaaaaa">> = iolist_to_binary(join(re:split("aaaaaa","^(a{2,3})*+a",[]))),
    <<"">> = iolist_to_binary(join(re:split("abXde","ab\\Cde",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abXde","ab\\Cde",[{parts,
                                                                                                                                                                         2}]))),
    <<":">> = iolist_to_binary(join(re:split("abXde","ab\\Cde",[]))),
    <<"abZde">> = iolist_to_binary(join(re:split("abZdeX","(?<=ab\\Cde)X",[trim]))),
    <<"abZde:">> = iolist_to_binary(join(re:split("abZdeX","(?<=ab\\Cde)X",[{parts,
                                                                                                                                                                                       2}]))),
    <<"abZde:">> = iolist_to_binary(join(re:split("abZdeX","(?<=ab\\Cde)X",[]))),
    <<"">> = iolist_to_binary(join(re:split("aCb","a[\\CD]b",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aCb","a[\\CD]b",[{parts,
                                                                                                                                                                       2}]))),
    <<":">> = iolist_to_binary(join(re:split("aCb","a[\\CD]b",[]))),
    <<"">> = iolist_to_binary(join(re:split("aDb","a[\\CD]b",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aDb","a[\\CD]b",[{parts,
                                                                                                                                                                       2}]))),
    <<":">> = iolist_to_binary(join(re:split("aDb","a[\\CD]b",[]))),
    <<"">> = iolist_to_binary(join(re:split("aJb","a[\\C-X]b",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aJb","a[\\C-X]b",[{parts,
                                                                                                                                                                         2}]))),
    <<":">> = iolist_to_binary(join(re:split("aJb","a[\\C-X]b",[]))),
    <<"X X">> = iolist_to_binary(join(re:split("X X","\\H\\h\\V\\v",[trim]))),
    <<"X X">> = iolist_to_binary(join(re:split("X X","\\H\\h\\V\\v",[{parts,
                                                                                                                                                                                  2}]))),
    <<"X X">> = iolist_to_binary(join(re:split("X X","\\H\\h\\V\\v",[]))),
    <<"">> = iolist_to_binary(join(re:split("X	X","\\H\\h\\V\\v",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("X	X","\\H\\h\\V\\v",[{parts,
                                                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("X	X","\\H\\h\\V\\v",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","\\H\\h\\V\\v",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","\\H\\h\\V\\v",[{parts,
                                                                                                                                                                                                2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","\\H\\h\\V\\v",[]))),
    <<"  X">> = iolist_to_binary(join(re:split("  X","\\H\\h\\V\\v",[trim]))),
    <<"  X">> = iolist_to_binary(join(re:split("  X","\\H\\h\\V\\v",[{parts,
                                                                                                                                                                                  2}]))),
    <<"  X">> = iolist_to_binary(join(re:split("  X","\\H\\h\\V\\v",[]))),
    <<"">> = iolist_to_binary(join(re:split("	  X

","\\H*\\h+\\V?\\v{3,4}",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("	  X

","\\H*\\h+\\V?\\v{3,4}",[{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("	  X

","\\H*\\h+\\V?\\v{3,4}",[]))),
    <<"">> = iolist_to_binary(join(re:split("	  

","\\H*\\h+\\V?\\v{3,4}",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("	  

","\\H*\\h+\\V?\\v{3,4}",[{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("	  

","\\H*\\h+\\V?\\v{3,4}",[]))),
    <<"">> = iolist_to_binary(join(re:split("	  
","\\H*\\h+\\V?\\v{3,4}",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("	  
","\\H*\\h+\\V?\\v{3,4}",[{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("	  
","\\H*\\h+\\V?\\v{3,4}",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","\\H*\\h+\\V?\\v{3,4}",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","\\H*\\h+\\V?\\v{3,4}",[{parts,
                                                                                                                                                                                                                2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","\\H*\\h+\\V?\\v{3,4}",[]))),
    <<"	  
">> = iolist_to_binary(join(re:split("	  
","\\H*\\h+\\V?\\v{3,4}",[trim]))),
    <<"	  
">> = iolist_to_binary(join(re:split("	  
","\\H*\\h+\\V?\\v{3,4}",[{parts,2}]))),
    <<"	  
">> = iolist_to_binary(join(re:split("	  
","\\H*\\h+\\V?\\v{3,4}",[]))),
    <<"XY  :E">> = iolist_to_binary(join(re:split("XY  ABCDE","\\H{3,4}",[trim]))),
    <<"XY  :E">> = iolist_to_binary(join(re:split("XY  ABCDE","\\H{3,4}",[{parts,
                                                                                                                                                                                   2}]))),
    <<"XY  :E">> = iolist_to_binary(join(re:split("XY  ABCDE","\\H{3,4}",[]))),
    <<"XY  : ST">> = iolist_to_binary(join(re:split("XY  PQR ST","\\H{3,4}",[trim]))),
    <<"XY  : ST">> = iolist_to_binary(join(re:split("XY  PQR ST","\\H{3,4}",[{parts,
                                                                                                                                                                                     2}]))),
    <<"XY  : ST">> = iolist_to_binary(join(re:split("XY  PQR ST","\\H{3,4}",[]))),
    <<"XY  A:QRS">> = iolist_to_binary(join(re:split("XY  AB    PQRS",".\\h{3,4}.",[trim]))),
    <<"XY  A:QRS">> = iolist_to_binary(join(re:split("XY  AB    PQRS",".\\h{3,4}.",[{parts,
                                                                                                                                                                                                 2}]))),
    <<"XY  A:QRS">> = iolist_to_binary(join(re:split("XY  AB    PQRS",".\\h{3,4}.",[]))),
    <<">">> = iolist_to_binary(join(re:split(">XNNNYZ","\\h*X\\h?\\H+Y\\H?Z",[trim]))),
    <<">:">> = iolist_to_binary(join(re:split(">XNNNYZ","\\h*X\\h?\\H+Y\\H?Z",[{parts,
                                                                                                                                                                                                        2}]))),
    <<">:">> = iolist_to_binary(join(re:split(">XNNNYZ","\\h*X\\h?\\H+Y\\H?Z",[]))),
    <<">">> = iolist_to_binary(join(re:split(">  X NYQZ","\\h*X\\h?\\H+Y\\H?Z",[trim]))),
    <<">:">> = iolist_to_binary(join(re:split(">  X NYQZ","\\h*X\\h?\\H+Y\\H?Z",[{parts,
                                                                                                                                                                                                            2}]))),
    <<">:">> = iolist_to_binary(join(re:split(">  X NYQZ","\\h*X\\h?\\H+Y\\H?Z",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","\\h*X\\h?\\H+Y\\H?Z",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","\\h*X\\h?\\H+Y\\H?Z",[{parts,
                                                                                                                                                                                                              2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","\\h*X\\h?\\H+Y\\H?Z",[]))),
    <<">XYZ">> = iolist_to_binary(join(re:split(">XYZ","\\h*X\\h?\\H+Y\\H?Z",[trim]))),
    <<">XYZ">> = iolist_to_binary(join(re:split(">XYZ","\\h*X\\h?\\H+Y\\H?Z",[{parts,
                                                                                                                                                                                                  2}]))),
    <<">XYZ">> = iolist_to_binary(join(re:split(">XYZ","\\h*X\\h?\\H+Y\\H?Z",[]))),
    <<">  X NY Z">> = iolist_to_binary(join(re:split(">  X NY Z","\\h*X\\h?\\H+Y\\H?Z",[trim]))),
    <<">  X NY Z">> = iolist_to_binary(join(re:split(">  X NY Z","\\h*X\\h?\\H+Y\\H?Z",[{parts,
                                                                                                                                                                                                            2}]))),
    <<">  X NY Z">> = iolist_to_binary(join(re:split(">  X NY Z","\\h*X\\h?\\H+Y\\H?Z",[]))),
    <<">">> = iolist_to_binary(join(re:split(">XY
Z
ANN","\\v*X\\v?Y\\v+Z\\V*\\x0a\\V+\\x0b\\V{2,3}\\x0c",[trim]))),
    <<">:">> = iolist_to_binary(join(re:split(">XY
Z
ANN","\\v*X\\v?Y\\v+Z\\V*\\x0a\\V+\\x0b\\V{2,3}\\x0c",[{parts,
                                                                               2}]))),
    <<">:">> = iolist_to_binary(join(re:split(">XY
Z
ANN","\\v*X\\v?Y\\v+Z\\V*\\x0a\\V+\\x0b\\V{2,3}\\x0c",[]))),
    <<">">> = iolist_to_binary(join(re:split(">

X
Y
ZZZ
AAANNN","\\v*X\\v?Y\\v+Z\\V*\\x0a\\V+\\x0b\\V{2,3}\\x0c",[trim]))),
    <<">:">> = iolist_to_binary(join(re:split(">

X
Y
ZZZ
AAANNN","\\v*X\\v?Y\\v+Z\\V*\\x0a\\V+\\x0b\\V{2,3}\\x0c",[{parts,
                                                                                  2}]))),
    <<">:">> = iolist_to_binary(join(re:split(">

X
Y
ZZZ
AAANNN","\\v*X\\v?Y\\v+Z\\V*\\x0a\\V+\\x0b\\V{2,3}\\x0c",[]))),
    <<"foo:foo">> = iolist_to_binary(join(re:split("foobar","(foo)\\Kbar",[trim]))),
    <<"foo:foo:">> = iolist_to_binary(join(re:split("foobar","(foo)\\Kbar",[{parts,
                                                                                                                                                                                   2}]))),
    <<"foo:foo:">> = iolist_to_binary(join(re:split("foobar","(foo)\\Kbar",[]))),
    <<"foo:foo:bar">> = iolist_to_binary(join(re:split("foobar","(foo)(\\Kbar|baz)",[trim]))),
    <<"foo:foo:bar:">> = iolist_to_binary(join(re:split("foobar","(foo)(\\Kbar|baz)",[{parts,
                                                                                                                                                                                               2}]))),
    <<"foo:foo:bar:">> = iolist_to_binary(join(re:split("foobar","(foo)(\\Kbar|baz)",[]))),
    <<":foo:baz">> = iolist_to_binary(join(re:split("foobaz","(foo)(\\Kbar|baz)",[trim]))),
    <<":foo:baz:">> = iolist_to_binary(join(re:split("foobaz","(foo)(\\Kbar|baz)",[{parts,
                                                                                                                                                                                               2}]))),
    <<":foo:baz:">> = iolist_to_binary(join(re:split("foobaz","(foo)(\\Kbar|baz)",[]))),
    <<"foo:foobar">> = iolist_to_binary(join(re:split("foobarbaz","(foo\\Kbar)baz",[trim]))),
    <<"foo:foobar:">> = iolist_to_binary(join(re:split("foobarbaz","(foo\\Kbar)baz",[{parts,
                                                                                                                                                                                               2}]))),
    <<"foo:foobar:">> = iolist_to_binary(join(re:split("foobarbaz","(foo\\Kbar)baz",[]))),
    <<":tom">> = iolist_to_binary(join(re:split("tom-tom","(?<A>tom|bon)-\\g{A}",[trim]))),
    <<":tom:">> = iolist_to_binary(join(re:split("tom-tom","(?<A>tom|bon)-\\g{A}",[{parts,
                                                                                                                                                                                                       2}]))),
    <<":tom:">> = iolist_to_binary(join(re:split("tom-tom","(?<A>tom|bon)-\\g{A}",[]))),
    <<":bon">> = iolist_to_binary(join(re:split("bon-bon","(?<A>tom|bon)-\\g{A}",[trim]))),
    <<":bon:">> = iolist_to_binary(join(re:split("bon-bon","(?<A>tom|bon)-\\g{A}",[{parts,
                                                                                                                                                                                                       2}]))),
    <<":bon:">> = iolist_to_binary(join(re:split("bon-bon","(?<A>tom|bon)-\\g{A}",[]))),
    <<"bacxxx">> = iolist_to_binary(join(re:split("bacxxx","(^(a|b\\g{-1}))",[trim]))),
    <<"bacxxx">> = iolist_to_binary(join(re:split("bacxxx","(^(a|b\\g{-1}))",[{parts,
                                                                                                                                                                                           2}]))),
    <<"bacxxx">> = iolist_to_binary(join(re:split("bacxxx","(^(a|b\\g{-1}))",[]))),
    <<":abc">> = iolist_to_binary(join(re:split("abcabc","(?|(abc)|(xyz))\\1",[trim]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abcabc","(?|(abc)|(xyz))\\1",[{parts,
                                                                                                                                                                                                 2}]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abcabc","(?|(abc)|(xyz))\\1",[]))),
    <<":xyz">> = iolist_to_binary(join(re:split("xyzxyz","(?|(abc)|(xyz))\\1",[trim]))),
    <<":xyz:">> = iolist_to_binary(join(re:split("xyzxyz","(?|(abc)|(xyz))\\1",[{parts,
                                                                                                                                                                                                 2}]))),
    <<":xyz:">> = iolist_to_binary(join(re:split("xyzxyz","(?|(abc)|(xyz))\\1",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?|(abc)|(xyz))\\1",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?|(abc)|(xyz))\\1",[{parts,
                                                                                                                                                                                                         2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?|(abc)|(xyz))\\1",[]))),
    <<"abcxyz">> = iolist_to_binary(join(re:split("abcxyz","(?|(abc)|(xyz))\\1",[trim]))),
    <<"abcxyz">> = iolist_to_binary(join(re:split("abcxyz","(?|(abc)|(xyz))\\1",[{parts,
                                                                                                                                                                                                 2}]))),
    <<"abcxyz">> = iolist_to_binary(join(re:split("abcxyz","(?|(abc)|(xyz))\\1",[]))),
    <<"xyzabc">> = iolist_to_binary(join(re:split("xyzabc","(?|(abc)|(xyz))\\1",[trim]))),
    <<"xyzabc">> = iolist_to_binary(join(re:split("xyzabc","(?|(abc)|(xyz))\\1",[{parts,
                                                                                                                                                                                                 2}]))),
    <<"xyzabc">> = iolist_to_binary(join(re:split("xyzabc","(?|(abc)|(xyz))\\1",[]))),
    <<":abc">> = iolist_to_binary(join(re:split("abcabc","(?|(abc)|(xyz))(?1)",[trim]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abcabc","(?|(abc)|(xyz))(?1)",[{parts,
                                                                                                                                                                                                  2}]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abcabc","(?|(abc)|(xyz))(?1)",[]))),
    <<":xyz">> = iolist_to_binary(join(re:split("xyzabc","(?|(abc)|(xyz))(?1)",[trim]))),
    <<":xyz:">> = iolist_to_binary(join(re:split("xyzabc","(?|(abc)|(xyz))(?1)",[{parts,
                                                                                                                                                                                                  2}]))),
    <<":xyz:">> = iolist_to_binary(join(re:split("xyzabc","(?|(abc)|(xyz))(?1)",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?|(abc)|(xyz))(?1)",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?|(abc)|(xyz))(?1)",[{parts,
                                                                                                                                                                                                          2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?|(abc)|(xyz))(?1)",[]))),
    <<"xyzxyz">> = iolist_to_binary(join(re:split("xyzxyz","(?|(abc)|(xyz))(?1)",[trim]))),
    <<"xyzxyz">> = iolist_to_binary(join(re:split("xyzxyz","(?|(abc)|(xyz))(?1)",[{parts,
                                                                                                                                                                                                  2}]))),
    <<"xyzxyz">> = iolist_to_binary(join(re:split("xyzxyz","(?|(abc)|(xyz))(?1)",[]))),
    ok.
run41() ->
    <<":a:b:c:d:Y">> = iolist_to_binary(join(re:split("XYabcdY","^X(?5)(a)(?|(b)|(q))(c)(d)(Y)",[trim]))),
    <<":a:b:c:d:Y:">> = iolist_to_binary(join(re:split("XYabcdY","^X(?5)(a)(?|(b)|(q))(c)(d)(Y)",[{parts,
                                                                                                                                                                                                                        2}]))),
    <<":a:b:c:d:Y:">> = iolist_to_binary(join(re:split("XYabcdY","^X(?5)(a)(?|(b)|(q))(c)(d)(Y)",[]))),
    <<":a:b:::c:d:Y">> = iolist_to_binary(join(re:split("XYabcdY","^X(?7)(a)(?|(b|(r)(s))|(q))(c)(d)(Y)",[trim]))),
    <<":a:b:::c:d:Y:">> = iolist_to_binary(join(re:split("XYabcdY","^X(?7)(a)(?|(b|(r)(s))|(q))(c)(d)(Y)",[{parts,
                                                                                                                                                                                                                                      2}]))),
    <<":a:b:::c:d:Y:">> = iolist_to_binary(join(re:split("XYabcdY","^X(?7)(a)(?|(b|(r)(s))|(q))(c)(d)(Y)",[]))),
    <<":a:b:::c:d:Y">> = iolist_to_binary(join(re:split("XYabcdY","^X(?7)(a)(?|(b|(?|(r)|(t))(s))|(q))(c)(d)(Y)",[trim]))),
    <<":a:b:::c:d:Y:">> = iolist_to_binary(join(re:split("XYabcdY","^X(?7)(a)(?|(b|(?|(r)|(t))(s))|(q))(c)(d)(Y)",[{parts,
                                                                                                                                                                                                                                                      2}]))),
    <<":a:b:::c:d:Y:">> = iolist_to_binary(join(re:split("XYabcdY","^X(?7)(a)(?|(b|(?|(r)|(t))(s))|(q))(c)(d)(Y)",[]))),
    <<":a:xyz">> = iolist_to_binary(join(re:split("a:aaxyz","(?'abc'\\w+):\\k<abc>{2}",[trim]))),
    <<":a:xyz">> = iolist_to_binary(join(re:split("a:aaxyz","(?'abc'\\w+):\\k<abc>{2}",[{parts,
                                                                                                                                                                                                                                2}]))),
    <<":a:xyz">> = iolist_to_binary(join(re:split("a:aaxyz","(?'abc'\\w+):\\k<abc>{2}",[]))),
    <<":ab:xyz">> = iolist_to_binary(join(re:split("ab:ababxyz","(?'abc'\\w+):\\k<abc>{2}",[trim]))),
    <<":ab:xyz">> = iolist_to_binary(join(re:split("ab:ababxyz","(?'abc'\\w+):\\k<abc>{2}",[{parts,
                                                                                                                                                                                                                                      2}]))),
    <<":ab:xyz">> = iolist_to_binary(join(re:split("ab:ababxyz","(?'abc'\\w+):\\k<abc>{2}",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?'abc'\\w+):\\k<abc>{2}",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?'abc'\\w+):\\k<abc>{2}",[{parts,
                                                                                                                                                                                                                                      2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?'abc'\\w+):\\k<abc>{2}",[]))),
    <<"a:axyz">> = iolist_to_binary(join(re:split("a:axyz","(?'abc'\\w+):\\k<abc>{2}",[trim]))),
    <<"a:axyz">> = iolist_to_binary(join(re:split("a:axyz","(?'abc'\\w+):\\k<abc>{2}",[{parts,
                                                                                                                                                                                                                              2}]))),
    <<"a:axyz">> = iolist_to_binary(join(re:split("a:axyz","(?'abc'\\w+):\\k<abc>{2}",[]))),
    <<"ab:abxyz">> = iolist_to_binary(join(re:split("ab:abxyz","(?'abc'\\w+):\\k<abc>{2}",[trim]))),
    <<"ab:abxyz">> = iolist_to_binary(join(re:split("ab:abxyz","(?'abc'\\w+):\\k<abc>{2}",[{parts,
                                                                                                                                                                                                                                  2}]))),
    <<"ab:abxyz">> = iolist_to_binary(join(re:split("ab:abxyz","(?'abc'\\w+):\\k<abc>{2}",[]))),
    <<":a:xyz">> = iolist_to_binary(join(re:split("a:aaxyz","(?'abc'\\w+):\\g{abc}{2}",[trim]))),
    <<":a:xyz">> = iolist_to_binary(join(re:split("a:aaxyz","(?'abc'\\w+):\\g{abc}{2}",[{parts,
                                                                                                                                                                                                                                2}]))),
    <<":a:xyz">> = iolist_to_binary(join(re:split("a:aaxyz","(?'abc'\\w+):\\g{abc}{2}",[]))),
    <<":ab:xyz">> = iolist_to_binary(join(re:split("ab:ababxyz","(?'abc'\\w+):\\g{abc}{2}",[trim]))),
    <<":ab:xyz">> = iolist_to_binary(join(re:split("ab:ababxyz","(?'abc'\\w+):\\g{abc}{2}",[{parts,
                                                                                                                                                                                                                                      2}]))),
    <<":ab:xyz">> = iolist_to_binary(join(re:split("ab:ababxyz","(?'abc'\\w+):\\g{abc}{2}",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?'abc'\\w+):\\g{abc}{2}",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?'abc'\\w+):\\g{abc}{2}",[{parts,
                                                                                                                                                                                                                                      2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?'abc'\\w+):\\g{abc}{2}",[]))),
    <<"a:axyz">> = iolist_to_binary(join(re:split("a:axyz","(?'abc'\\w+):\\g{abc}{2}",[trim]))),
    <<"a:axyz">> = iolist_to_binary(join(re:split("a:axyz","(?'abc'\\w+):\\g{abc}{2}",[{parts,
                                                                                                                                                                                                                              2}]))),
    <<"a:axyz">> = iolist_to_binary(join(re:split("a:axyz","(?'abc'\\w+):\\g{abc}{2}",[]))),
    <<"ab:abxyz">> = iolist_to_binary(join(re:split("ab:abxyz","(?'abc'\\w+):\\g{abc}{2}",[trim]))),
    <<"ab:abxyz">> = iolist_to_binary(join(re:split("ab:abxyz","(?'abc'\\w+):\\g{abc}{2}",[{parts,
                                                                                                                                                                                                                                  2}]))),
    <<"ab:abxyz">> = iolist_to_binary(join(re:split("ab:abxyz","(?'abc'\\w+):\\g{abc}{2}",[]))),
    <<":a">> = iolist_to_binary(join(re:split("abd","^(?<ab>a)? (?(<ab>)b|c) (?('ab')d|e)",[extended,
                                                                                                                                                                                                                                            trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("abd","^(?<ab>a)? (?(<ab>)b|c) (?('ab')d|e)",[extended,
                                                                                                                                                                                                                                              {parts,
                                                                                                                                                                                                                                               2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("abd","^(?<ab>a)? (?(<ab>)b|c) (?('ab')d|e)",[extended]))),
    <<"">> = iolist_to_binary(join(re:split("ce","^(?<ab>a)? (?(<ab>)b|c) (?('ab')d|e)",[extended,
                                                                                                                                                                                                                                          trim]))),
    <<"::">> = iolist_to_binary(join(re:split("ce","^(?<ab>a)? (?(<ab>)b|c) (?('ab')d|e)",[extended,
                                                                                                                                                                                                                                            {parts,
                                                                                                                                                                                                                                             2}]))),
    <<"::">> = iolist_to_binary(join(re:split("ce","^(?<ab>a)? (?(<ab>)b|c) (?('ab')d|e)",[extended]))),
    <<":aX">> = iolist_to_binary(join(re:split("aXaXZ","^(a.)\\g-1Z",[trim]))),
    <<":aX:">> = iolist_to_binary(join(re:split("aXaXZ","^(a.)\\g-1Z",[{parts,
                                                                                                                                                                                 2}]))),
    <<":aX:">> = iolist_to_binary(join(re:split("aXaXZ","^(a.)\\g-1Z",[]))),
    <<":aX">> = iolist_to_binary(join(re:split("aXaXZ","^(a.)\\g{-1}Z",[trim]))),
    <<":aX:">> = iolist_to_binary(join(re:split("aXaXZ","^(a.)\\g{-1}Z",[{parts,
                                                                                                                                                                                     2}]))),
    <<":aX:">> = iolist_to_binary(join(re:split("aXaXZ","^(a.)\\g{-1}Z",[]))),
    <<":::cd">> = iolist_to_binary(join(re:split("abcd","^(?(DEFINE) (?<A> a) (?<B> b) )  (?&A) (?&B) ",[extended,
                                                                                                                                                                                                                                                trim]))),
    <<":::cd">> = iolist_to_binary(join(re:split("abcd","^(?(DEFINE) (?<A> a) (?<B> b) )  (?&A) (?&B) ",[extended,
                                                                                                                                                                                                                                                  {parts,
                                                                                                                                                                                                                                                   2}]))),
    <<":::cd">> = iolist_to_binary(join(re:split("abcd","^(?(DEFINE) (?<A> a) (?<B> b) )  (?&A) (?&B) ",[extended]))),
    <<":metcalfe:33">> = iolist_to_binary(join(re:split("metcalfe 33","(?<NAME>(?&NAME_PAT))\\s+(?<ADDR>(?&ADDRESS_PAT))
  (?(DEFINE)
  (?<NAME_PAT>[a-z]+)
  (?<ADDRESS_PAT>\\d+)
  )",[extended,trim]))),
    <<":metcalfe:33:::">> = iolist_to_binary(join(re:split("metcalfe 33","(?<NAME>(?&NAME_PAT))\\s+(?<ADDR>(?&ADDRESS_PAT))
  (?(DEFINE)
  (?<NAME_PAT>[a-z]+)
  (?<ADDRESS_PAT>\\d+)
  )",[extended,{parts,2}]))),
    <<":metcalfe:33:::">> = iolist_to_binary(join(re:split("metcalfe 33","(?<NAME>(?&NAME_PAT))\\s+(?<ADDR>(?&ADDRESS_PAT))
  (?(DEFINE)
  (?<NAME_PAT>[a-z]+)
  (?<ADDRESS_PAT>\\d+)
  )",[extended]))),
    <<"::.4">> = iolist_to_binary(join(re:split("1.2.3.4","(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))\\b(?&byte)(\\.(?&byte)){3}",[trim]))),
    <<"::.4:">> = iolist_to_binary(join(re:split("1.2.3.4","(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))\\b(?&byte)(\\.(?&byte)){3}",[{parts,
                                                                                                                                                                                                                                                                                                                                        2}]))),
    <<"::.4:">> = iolist_to_binary(join(re:split("1.2.3.4","(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))\\b(?&byte)(\\.(?&byte)){3}",[]))),
    <<"::.206">> = iolist_to_binary(join(re:split("131.111.10.206","(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))\\b(?&byte)(\\.(?&byte)){3}",[trim]))),
    <<"::.206:">> = iolist_to_binary(join(re:split("131.111.10.206","(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))\\b(?&byte)(\\.(?&byte)){3}",[{parts,
                                                                                                                                                                                                                                                                                                                                                      2}]))),
    <<"::.206:">> = iolist_to_binary(join(re:split("131.111.10.206","(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))\\b(?&byte)(\\.(?&byte)){3}",[]))),
    <<"::.0">> = iolist_to_binary(join(re:split("10.0.0.0","(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))\\b(?&byte)(\\.(?&byte)){3}",[trim]))),
    <<"::.0:">> = iolist_to_binary(join(re:split("10.0.0.0","(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))\\b(?&byte)(\\.(?&byte)){3}",[{parts,
                                                                                                                                                                                                                                                                                                                                          2}]))),
    <<"::.0:">> = iolist_to_binary(join(re:split("10.0.0.0","(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))\\b(?&byte)(\\.(?&byte)){3}",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))\\b(?&byte)(\\.(?&byte)){3}",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))\\b(?&byte)(\\.(?&byte)){3}",[{parts,
                                                                                                                                                                                                                                                                                                                                              2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))\\b(?&byte)(\\.(?&byte)){3}",[]))),
    <<"10.6">> = iolist_to_binary(join(re:split("10.6","(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))\\b(?&byte)(\\.(?&byte)){3}",[trim]))),
    <<"10.6">> = iolist_to_binary(join(re:split("10.6","(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))\\b(?&byte)(\\.(?&byte)){3}",[{parts,
                                                                                                                                                                                                                                                                                                                                  2}]))),
    <<"10.6">> = iolist_to_binary(join(re:split("10.6","(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))\\b(?&byte)(\\.(?&byte)){3}",[]))),
    <<"455.3.4.5">> = iolist_to_binary(join(re:split("455.3.4.5","(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))\\b(?&byte)(\\.(?&byte)){3}",[trim]))),
    <<"455.3.4.5">> = iolist_to_binary(join(re:split("455.3.4.5","(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))\\b(?&byte)(\\.(?&byte)){3}",[{parts,
                                                                                                                                                                                                                                                                                                                                            2}]))),
    <<"455.3.4.5">> = iolist_to_binary(join(re:split("455.3.4.5","(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))\\b(?&byte)(\\.(?&byte)){3}",[]))),
    <<":.4">> = iolist_to_binary(join(re:split("1.2.3.4","\\b(?&byte)(\\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))",[trim]))),
    <<":.4::">> = iolist_to_binary(join(re:split("1.2.3.4","\\b(?&byte)(\\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))",[{parts,
                                                                                                                                                                                                                                                                                                                                        2}]))),
    <<":.4::">> = iolist_to_binary(join(re:split("1.2.3.4","\\b(?&byte)(\\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))",[]))),
    <<":.206">> = iolist_to_binary(join(re:split("131.111.10.206","\\b(?&byte)(\\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))",[trim]))),
    <<":.206::">> = iolist_to_binary(join(re:split("131.111.10.206","\\b(?&byte)(\\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))",[{parts,
                                                                                                                                                                                                                                                                                                                                                      2}]))),
    <<":.206::">> = iolist_to_binary(join(re:split("131.111.10.206","\\b(?&byte)(\\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))",[]))),
    <<":.0">> = iolist_to_binary(join(re:split("10.0.0.0","\\b(?&byte)(\\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))",[trim]))),
    <<":.0::">> = iolist_to_binary(join(re:split("10.0.0.0","\\b(?&byte)(\\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))",[{parts,
                                                                                                                                                                                                                                                                                                                                          2}]))),
    <<":.0::">> = iolist_to_binary(join(re:split("10.0.0.0","\\b(?&byte)(\\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","\\b(?&byte)(\\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","\\b(?&byte)(\\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))",[{parts,
                                                                                                                                                                                                                                                                                                                                              2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","\\b(?&byte)(\\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))",[]))),
    <<"10.6">> = iolist_to_binary(join(re:split("10.6","\\b(?&byte)(\\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))",[trim]))),
    <<"10.6">> = iolist_to_binary(join(re:split("10.6","\\b(?&byte)(\\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))",[{parts,
                                                                                                                                                                                                                                                                                                                                  2}]))),
    <<"10.6">> = iolist_to_binary(join(re:split("10.6","\\b(?&byte)(\\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))",[]))),
    <<"455.3.4.5">> = iolist_to_binary(join(re:split("455.3.4.5","\\b(?&byte)(\\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))",[trim]))),
    <<"455.3.4.5">> = iolist_to_binary(join(re:split("455.3.4.5","\\b(?&byte)(\\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))",[{parts,
                                                                                                                                                                                                                                                                                                                                            2}]))),
    <<"455.3.4.5">> = iolist_to_binary(join(re:split("455.3.4.5","\\b(?&byte)(\\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\\d|25[0-5]|1\\d\\d|[1-9]?\\d))",[]))),
    <<":party">> = iolist_to_binary(join(re:split("now is the time for all good men to come to the aid of the party","^(\\w++|\\s++)*$",[trim]))),
    <<":party:">> = iolist_to_binary(join(re:split("now is the time for all good men to come to the aid of the party","^(\\w++|\\s++)*$",[{parts,
                                                                                                                                                                                                                                                                                                                   2}]))),
    <<":party:">> = iolist_to_binary(join(re:split("now is the time for all good men to come to the aid of the party","^(\\w++|\\s++)*$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(\\w++|\\s++)*$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(\\w++|\\s++)*$",[{parts,
                                                                                                                                                                                                         2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(\\w++|\\s++)*$",[]))),
    <<"this is not a line with only words and spaces!">> = iolist_to_binary(join(re:split("this is not a line with only words and spaces!","^(\\w++|\\s++)*$",[trim]))),
    <<"this is not a line with only words and spaces!">> = iolist_to_binary(join(re:split("this is not a line with only words and spaces!","^(\\w++|\\s++)*$",[{parts,
                                                                                                                                                                                                                                                                               2}]))),
    <<"this is not a line with only words and spaces!">> = iolist_to_binary(join(re:split("this is not a line with only words and spaces!","^(\\w++|\\s++)*$",[]))),
    <<":12345:a">> = iolist_to_binary(join(re:split("12345a","(\\d++)(\\w)",[trim]))),
    <<":12345:a:">> = iolist_to_binary(join(re:split("12345a","(\\d++)(\\w)",[{parts,
                                                                                                                                                                                      2}]))),
    <<":12345:a:">> = iolist_to_binary(join(re:split("12345a","(\\d++)(\\w)",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(\\d++)(\\w)",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(\\d++)(\\w)",[{parts,
                                                                                                                                                                                                2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","(\\d++)(\\w)",[]))),
    <<"12345+">> = iolist_to_binary(join(re:split("12345+","(\\d++)(\\w)",[trim]))),
    <<"12345+">> = iolist_to_binary(join(re:split("12345+","(\\d++)(\\w)",[{parts,
                                                                                                                                                                                      2}]))),
    <<"12345+">> = iolist_to_binary(join(re:split("12345+","(\\d++)(\\w)",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaab","a++b",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaab","a++b",[{parts,
                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaab","a++b",[]))),
    <<":aaab">> = iolist_to_binary(join(re:split("aaab","(a++b)",[trim]))),
    <<":aaab:">> = iolist_to_binary(join(re:split("aaab","(a++b)",[{parts,
                                                                                                                                                                    2}]))),
    <<":aaab:">> = iolist_to_binary(join(re:split("aaab","(a++b)",[]))),
    <<":aaa">> = iolist_to_binary(join(re:split("aaab","(a++)b",[trim]))),
    <<":aaa:">> = iolist_to_binary(join(re:split("aaab","(a++)b",[{parts,
                                                                                                                                                                    2}]))),
    <<":aaa:">> = iolist_to_binary(join(re:split("aaab","(a++)b",[]))),
    <<"((:x">> = iolist_to_binary(join(re:split("((abc(ade)ufh()()x","([^()]++|\\([^()]*\\))+",[trim]))),
    <<"((:x:">> = iolist_to_binary(join(re:split("((abc(ade)ufh()()x","([^()]++|\\([^()]*\\))+",[{parts,
                                                                                                                                                                                                                                    2}]))),
    <<"((:x:">> = iolist_to_binary(join(re:split("((abc(ade)ufh()()x","([^()]++|\\([^()]*\\))+",[]))),
    <<":abc">> = iolist_to_binary(join(re:split("(abc)","\\(([^()]++|\\([^()]+\\))+\\)",[trim]))),
    <<":abc:">> = iolist_to_binary(join(re:split("(abc)","\\(([^()]++|\\([^()]+\\))+\\)",[{parts,
                                                                                                                                                                                                                        2}]))),
    <<":abc:">> = iolist_to_binary(join(re:split("(abc)","\\(([^()]++|\\([^()]+\\))+\\)",[]))),
    <<":xyz">> = iolist_to_binary(join(re:split("(abc(def)xyz)","\\(([^()]++|\\([^()]+\\))+\\)",[trim]))),
    <<":xyz:">> = iolist_to_binary(join(re:split("(abc(def)xyz)","\\(([^()]++|\\([^()]+\\))+\\)",[{parts,
                                                                                                                                                                                                                                        2}]))),
    <<":xyz:">> = iolist_to_binary(join(re:split("(abc(def)xyz)","\\(([^()]++|\\([^()]+\\))+\\)",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\(([^()]++|\\([^()]+\\))+\\)",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\(([^()]++|\\([^()]+\\))+\\)",[{parts,
                                                                                                                                                                                                                                    2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","\\(([^()]++|\\([^()]+\\))+\\)",[]))),
    <<"((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","\\(([^()]++|\\([^()]+\\))+\\)",[trim]))),
    <<"((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","\\(([^()]++|\\([^()]+\\))+\\)",[{parts,
                                                                                                                                                                                                                                                                                                              2}]))),
    <<"((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa">> = iolist_to_binary(join(re:split("((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","\\(([^()]++|\\([^()]+\\))+\\)",[]))),
    <<":c">> = iolist_to_binary(join(re:split("abc","^([^()]|\\((?1)*\\))*$",[trim]))),
    <<":c:">> = iolist_to_binary(join(re:split("abc","^([^()]|\\((?1)*\\))*$",[{parts,
                                                                                                                                                                                                     2}]))),
    <<":c:">> = iolist_to_binary(join(re:split("abc","^([^()]|\\((?1)*\\))*$",[]))),
    <<":c">> = iolist_to_binary(join(re:split("a(b)c","^([^()]|\\((?1)*\\))*$",[trim]))),
    <<":c:">> = iolist_to_binary(join(re:split("a(b)c","^([^()]|\\((?1)*\\))*$",[{parts,
                                                                                                                                                                                                         2}]))),
    <<":c:">> = iolist_to_binary(join(re:split("a(b)c","^([^()]|\\((?1)*\\))*$",[]))),
    <<":d">> = iolist_to_binary(join(re:split("a(b(c))d","^([^()]|\\((?1)*\\))*$",[trim]))),
    <<":d:">> = iolist_to_binary(join(re:split("a(b(c))d","^([^()]|\\((?1)*\\))*$",[{parts,
                                                                                                                                                                                                               2}]))),
    <<":d:">> = iolist_to_binary(join(re:split("a(b(c))d","^([^()]|\\((?1)*\\))*$",[]))),
    <<"*** Failers)">> = iolist_to_binary(join(re:split("*** Failers)","^([^()]|\\((?1)*\\))*$",[trim]))),
    <<"*** Failers)">> = iolist_to_binary(join(re:split("*** Failers)","^([^()]|\\((?1)*\\))*$",[{parts,
                                                                                                                                                                                                                       2}]))),
    <<"*** Failers)">> = iolist_to_binary(join(re:split("*** Failers)","^([^()]|\\((?1)*\\))*$",[]))),
    <<"a(b(c)d">> = iolist_to_binary(join(re:split("a(b(c)d","^([^()]|\\((?1)*\\))*$",[trim]))),
    <<"a(b(c)d">> = iolist_to_binary(join(re:split("a(b(c)d","^([^()]|\\((?1)*\\))*$",[{parts,
                                                                                                                                                                                                             2}]))),
    <<"a(b(c)d">> = iolist_to_binary(join(re:split("a(b(c)d","^([^()]|\\((?1)*\\))*$",[]))),
    ok.
run42() ->
    <<":3">> = iolist_to_binary(join(re:split(">abc>123<xyz<","^>abc>([^()]|\\((?1)*\\))*<xyz<$",[trim]))),
    <<":3:">> = iolist_to_binary(join(re:split(">abc>123<xyz<","^>abc>([^()]|\\((?1)*\\))*<xyz<$",[{parts,
                                                                                                                                                                                                                                             2}]))),
    <<":3:">> = iolist_to_binary(join(re:split(">abc>123<xyz<","^>abc>([^()]|\\((?1)*\\))*<xyz<$",[]))),
    <<":3">> = iolist_to_binary(join(re:split(">abc>1(2)3<xyz<","^>abc>([^()]|\\((?1)*\\))*<xyz<$",[trim]))),
    <<":3:">> = iolist_to_binary(join(re:split(">abc>1(2)3<xyz<","^>abc>([^()]|\\((?1)*\\))*<xyz<$",[{parts,
                                                                                                                                                                                                                                                 2}]))),
    <<":3:">> = iolist_to_binary(join(re:split(">abc>1(2)3<xyz<","^>abc>([^()]|\\((?1)*\\))*<xyz<$",[]))),
    <<":(1(2)3)">> = iolist_to_binary(join(re:split(">abc>(1(2)3)<xyz<","^>abc>([^()]|\\((?1)*\\))*<xyz<$",[trim]))),
    <<":(1(2)3):">> = iolist_to_binary(join(re:split(">abc>(1(2)3)<xyz<","^>abc>([^()]|\\((?1)*\\))*<xyz<$",[{parts,
                                                                                                                                                                                                                                                     2}]))),
    <<":(1(2)3):">> = iolist_to_binary(join(re:split(">abc>(1(2)3)<xyz<","^>abc>([^()]|\\((?1)*\\))*<xyz<$",[]))),
    <<":1221:1">> = iolist_to_binary(join(re:split("1221","^(?:((.)(?1)\\2|)|((.)(?3)\\4|.))$",[caseless,
                                                                                                                                                                                                                             trim]))),
    <<":1221:1:::">> = iolist_to_binary(join(re:split("1221","^(?:((.)(?1)\\2|)|((.)(?3)\\4|.))$",[caseless,
                                                                                                                                                                                                                               {parts,
                                                                                                                                                                                                                                2}]))),
    <<":1221:1:::">> = iolist_to_binary(join(re:split("1221","^(?:((.)(?1)\\2|)|((.)(?3)\\4|.))$",[caseless]))),
    <<":::Satanoscillatemymetallicsonatas:S">> = iolist_to_binary(join(re:split("Satanoscillatemymetallicsonatas","^(?:((.)(?1)\\2|)|((.)(?3)\\4|.))$",[caseless,
                                                                                                                                                                                                                                                                                   trim]))),
    <<":::Satanoscillatemymetallicsonatas:S:">> = iolist_to_binary(join(re:split("Satanoscillatemymetallicsonatas","^(?:((.)(?1)\\2|)|((.)(?3)\\4|.))$",[caseless,
                                                                                                                                                                                                                                                                                     {parts,
                                                                                                                                                                                                                                                                                      2}]))),
    <<":::Satanoscillatemymetallicsonatas:S:">> = iolist_to_binary(join(re:split("Satanoscillatemymetallicsonatas","^(?:((.)(?1)\\2|)|((.)(?3)\\4|.))$",[caseless]))),
    <<":::AmanaplanacanalPanama:A">> = iolist_to_binary(join(re:split("AmanaplanacanalPanama","^(?:((.)(?1)\\2|)|((.)(?3)\\4|.))$",[caseless,
                                                                                                                                                                                                                                                               trim]))),
    <<":::AmanaplanacanalPanama:A:">> = iolist_to_binary(join(re:split("AmanaplanacanalPanama","^(?:((.)(?1)\\2|)|((.)(?3)\\4|.))$",[caseless,
                                                                                                                                                                                                                                                                 {parts,
                                                                                                                                                                                                                                                                  2}]))),
    <<":::AmanaplanacanalPanama:A:">> = iolist_to_binary(join(re:split("AmanaplanacanalPanama","^(?:((.)(?1)\\2|)|((.)(?3)\\4|.))$",[caseless]))),
    <<":::AblewasIereIsawElba:A">> = iolist_to_binary(join(re:split("AblewasIereIsawElba","^(?:((.)(?1)\\2|)|((.)(?3)\\4|.))$",[caseless,
                                                                                                                                                                                                                                                           trim]))),
    <<":::AblewasIereIsawElba:A:">> = iolist_to_binary(join(re:split("AblewasIereIsawElba","^(?:((.)(?1)\\2|)|((.)(?3)\\4|.))$",[caseless,
                                                                                                                                                                                                                                                             {parts,
                                                                                                                                                                                                                                                              2}]))),
    <<":::AblewasIereIsawElba:A:">> = iolist_to_binary(join(re:split("AblewasIereIsawElba","^(?:((.)(?1)\\2|)|((.)(?3)\\4|.))$",[caseless]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(?:((.)(?1)\\2|)|((.)(?3)\\4|.))$",[caseless,
                                                                                                                                                                                                                                           trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(?:((.)(?1)\\2|)|((.)(?3)\\4|.))$",[caseless,
                                                                                                                                                                                                                                             {parts,
                                                                                                                                                                                                                                              2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(?:((.)(?1)\\2|)|((.)(?3)\\4|.))$",[caseless]))),
    <<"Thequickbrownfox">> = iolist_to_binary(join(re:split("Thequickbrownfox","^(?:((.)(?1)\\2|)|((.)(?3)\\4|.))$",[caseless,
                                                                                                                                                                                                                                                     trim]))),
    <<"Thequickbrownfox">> = iolist_to_binary(join(re:split("Thequickbrownfox","^(?:((.)(?1)\\2|)|((.)(?3)\\4|.))$",[caseless,
                                                                                                                                                                                                                                                       {parts,
                                                                                                                                                                                                                                                        2}]))),
    <<"Thequickbrownfox">> = iolist_to_binary(join(re:split("Thequickbrownfox","^(?:((.)(?1)\\2|)|((.)(?3)\\4|.))$",[caseless]))),
    <<":12">> = iolist_to_binary(join(re:split("12","^(\\d+|\\((?1)([+*-])(?1)\\)|-(?1))$",[trim]))),
    <<":12::">> = iolist_to_binary(join(re:split("12","^(\\d+|\\((?1)([+*-])(?1)\\)|-(?1))$",[{parts,
                                                                                                                                                                                                                                2}]))),
    <<":12::">> = iolist_to_binary(join(re:split("12","^(\\d+|\\((?1)([+*-])(?1)\\)|-(?1))$",[]))),
    <<":(((2+2)*-3)-7):-">> = iolist_to_binary(join(re:split("(((2+2)*-3)-7)","^(\\d+|\\((?1)([+*-])(?1)\\)|-(?1))$",[trim]))),
    <<":(((2+2)*-3)-7):-:">> = iolist_to_binary(join(re:split("(((2+2)*-3)-7)","^(\\d+|\\((?1)([+*-])(?1)\\)|-(?1))$",[{parts,
                                                                                                                                                                                                                                                        2}]))),
    <<":(((2+2)*-3)-7):-:">> = iolist_to_binary(join(re:split("(((2+2)*-3)-7)","^(\\d+|\\((?1)([+*-])(?1)\\)|-(?1))$",[]))),
    <<":-12">> = iolist_to_binary(join(re:split("-12","^(\\d+|\\((?1)([+*-])(?1)\\)|-(?1))$",[trim]))),
    <<":-12::">> = iolist_to_binary(join(re:split("-12","^(\\d+|\\((?1)([+*-])(?1)\\)|-(?1))$",[{parts,
                                                                                                                                                                                                                                  2}]))),
    <<":-12::">> = iolist_to_binary(join(re:split("-12","^(\\d+|\\((?1)([+*-])(?1)\\)|-(?1))$",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(\\d+|\\((?1)([+*-])(?1)\\)|-(?1))$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(\\d+|\\((?1)([+*-])(?1)\\)|-(?1))$",[{parts,
                                                                                                                                                                                                                                                  2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(\\d+|\\((?1)([+*-])(?1)\\)|-(?1))$",[]))),
    <<"((2+2)*-3)-7)">> = iolist_to_binary(join(re:split("((2+2)*-3)-7)","^(\\d+|\\((?1)([+*-])(?1)\\)|-(?1))$",[trim]))),
    <<"((2+2)*-3)-7)">> = iolist_to_binary(join(re:split("((2+2)*-3)-7)","^(\\d+|\\((?1)([+*-])(?1)\\)|-(?1))$",[{parts,
                                                                                                                                                                                                                                                      2}]))),
    <<"((2+2)*-3)-7)">> = iolist_to_binary(join(re:split("((2+2)*-3)-7)","^(\\d+|\\((?1)([+*-])(?1)\\)|-(?1))$",[]))),
    <<":xyz:y">> = iolist_to_binary(join(re:split("xyz","^(x(y|(?1){2})z)",[trim]))),
    <<":xyz:y:">> = iolist_to_binary(join(re:split("xyz","^(x(y|(?1){2})z)",[{parts,
                                                                                                                                                                                      2}]))),
    <<":xyz:y:">> = iolist_to_binary(join(re:split("xyz","^(x(y|(?1){2})z)",[]))),
    <<":xxyzxyzz:xyzxyz">> = iolist_to_binary(join(re:split("xxyzxyzz","^(x(y|(?1){2})z)",[trim]))),
    <<":xxyzxyzz:xyzxyz:">> = iolist_to_binary(join(re:split("xxyzxyzz","^(x(y|(?1){2})z)",[{parts,
                                                                                                                                                                                                2}]))),
    <<":xxyzxyzz:xyzxyz:">> = iolist_to_binary(join(re:split("xxyzxyzz","^(x(y|(?1){2})z)",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(x(y|(?1){2})z)",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(x(y|(?1){2})z)",[{parts,
                                                                                                                                                                                                      2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(x(y|(?1){2})z)",[]))),
    <<"xxyzz">> = iolist_to_binary(join(re:split("xxyzz","^(x(y|(?1){2})z)",[trim]))),
    <<"xxyzz">> = iolist_to_binary(join(re:split("xxyzz","^(x(y|(?1){2})z)",[{parts,
                                                                                                                                                                                          2}]))),
    <<"xxyzz">> = iolist_to_binary(join(re:split("xxyzz","^(x(y|(?1){2})z)",[]))),
    <<"xxyzxyzxyzz">> = iolist_to_binary(join(re:split("xxyzxyzxyzz","^(x(y|(?1){2})z)",[trim]))),
    <<"xxyzxyzxyzz">> = iolist_to_binary(join(re:split("xxyzxyzxyzz","^(x(y|(?1){2})z)",[{parts,
                                                                                                                                                                                                      2}]))),
    <<"xxyzxyzxyzz">> = iolist_to_binary(join(re:split("xxyzxyzxyzz","^(x(y|(?1){2})z)",[]))),
    <<":<>:<>">> = iolist_to_binary(join(re:split("<>","((< (?: (?(R) \\d++  | [^<>]*+) | (?2)) * >))",[extended,
                                                                                                                                                                                                                                             trim]))),
    <<":<>:<>:">> = iolist_to_binary(join(re:split("<>","((< (?: (?(R) \\d++  | [^<>]*+) | (?2)) * >))",[extended,
                                                                                                                                                                                                                                               {parts,
                                                                                                                                                                                                                                                2}]))),
    <<":<>:<>:">> = iolist_to_binary(join(re:split("<>","((< (?: (?(R) \\d++  | [^<>]*+) | (?2)) * >))",[extended]))),
    <<":<abcd>:<abcd>">> = iolist_to_binary(join(re:split("<abcd>","((< (?: (?(R) \\d++  | [^<>]*+) | (?2)) * >))",[extended,
                                                                                                                                                                                                                                                     trim]))),
    <<":<abcd>:<abcd>:">> = iolist_to_binary(join(re:split("<abcd>","((< (?: (?(R) \\d++  | [^<>]*+) | (?2)) * >))",[extended,
                                                                                                                                                                                                                                                       {parts,
                                                                                                                                                                                                                                                        2}]))),
    <<":<abcd>:<abcd>:">> = iolist_to_binary(join(re:split("<abcd>","((< (?: (?(R) \\d++  | [^<>]*+) | (?2)) * >))",[extended]))),
    <<":<abc <123> hij>:<abc <123> hij>">> = iolist_to_binary(join(re:split("<abc <123> hij>","((< (?: (?(R) \\d++  | [^<>]*+) | (?2)) * >))",[extended,
                                                                                                                                                                                                                                                                       trim]))),
    <<":<abc <123> hij>:<abc <123> hij>:">> = iolist_to_binary(join(re:split("<abc <123> hij>","((< (?: (?(R) \\d++  | [^<>]*+) | (?2)) * >))",[extended,
                                                                                                                                                                                                                                                                         {parts,
                                                                                                                                                                                                                                                                          2}]))),
    <<":<abc <123> hij>:<abc <123> hij>:">> = iolist_to_binary(join(re:split("<abc <123> hij>","((< (?: (?(R) \\d++  | [^<>]*+) | (?2)) * >))",[extended]))),
    <<"<abc :<def>:<def>: hij>">> = iolist_to_binary(join(re:split("<abc <def> hij>","((< (?: (?(R) \\d++  | [^<>]*+) | (?2)) * >))",[extended,
                                                                                                                                                                                                                                                                       trim]))),
    <<"<abc :<def>:<def>: hij>">> = iolist_to_binary(join(re:split("<abc <def> hij>","((< (?: (?(R) \\d++  | [^<>]*+) | (?2)) * >))",[extended,
                                                                                                                                                                                                                                                                         {parts,
                                                                                                                                                                                                                                                                          2}]))),
    <<"<abc :<def>:<def>: hij>">> = iolist_to_binary(join(re:split("<abc <def> hij>","((< (?: (?(R) \\d++  | [^<>]*+) | (?2)) * >))",[extended]))),
    <<":<abc<>def>:<abc<>def>">> = iolist_to_binary(join(re:split("<abc<>def>","((< (?: (?(R) \\d++  | [^<>]*+) | (?2)) * >))",[extended,
                                                                                                                                                                                                                                                             trim]))),
    <<":<abc<>def>:<abc<>def>:">> = iolist_to_binary(join(re:split("<abc<>def>","((< (?: (?(R) \\d++  | [^<>]*+) | (?2)) * >))",[extended,
                                                                                                                                                                                                                                                               {parts,
                                                                                                                                                                                                                                                                2}]))),
    <<":<abc<>def>:<abc<>def>:">> = iolist_to_binary(join(re:split("<abc<>def>","((< (?: (?(R) \\d++  | [^<>]*+) | (?2)) * >))",[extended]))),
    <<"<abc:<>:<>">> = iolist_to_binary(join(re:split("<abc<>","((< (?: (?(R) \\d++  | [^<>]*+) | (?2)) * >))",[extended,
                                                                                                                                                                                                                                                     trim]))),
    <<"<abc:<>:<>:">> = iolist_to_binary(join(re:split("<abc<>","((< (?: (?(R) \\d++  | [^<>]*+) | (?2)) * >))",[extended,
                                                                                                                                                                                                                                                       {parts,
                                                                                                                                                                                                                                                        2}]))),
    <<"<abc:<>:<>:">> = iolist_to_binary(join(re:split("<abc<>","((< (?: (?(R) \\d++  | [^<>]*+) | (?2)) * >))",[extended]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","((< (?: (?(R) \\d++  | [^<>]*+) | (?2)) * >))",[extended,
                                                                                                                                                                                                                                                               trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","((< (?: (?(R) \\d++  | [^<>]*+) | (?2)) * >))",[extended,
                                                                                                                                                                                                                                                                 {parts,
                                                                                                                                                                                                                                                                  2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","((< (?: (?(R) \\d++  | [^<>]*+) | (?2)) * >))",[extended]))),
    <<"<abc">> = iolist_to_binary(join(re:split("<abc","((< (?: (?(R) \\d++  | [^<>]*+) | (?2)) * >))",[extended,
                                                                                                                                                                                                                                                 trim]))),
    <<"<abc">> = iolist_to_binary(join(re:split("<abc","((< (?: (?(R) \\d++  | [^<>]*+) | (?2)) * >))",[extended,
                                                                                                                                                                                                                                                   {parts,
                                                                                                                                                                                                                                                    2}]))),
    <<"<abc">> = iolist_to_binary(join(re:split("<abc","((< (?: (?(R) \\d++  | [^<>]*+) | (?2)) * >))",[extended]))),
    <<"aaaaaa">> = iolist_to_binary(join(re:split("aaaaaa","^a+(*FAIL)",[trim]))),
    <<"aaaaaa">> = iolist_to_binary(join(re:split("aaaaaa","^a+(*FAIL)",[{parts,
                                                                                                                                                                                2}]))),
    <<"aaaaaa">> = iolist_to_binary(join(re:split("aaaaaa","^a+(*FAIL)",[]))),
    <<"aaabccc">> = iolist_to_binary(join(re:split("aaabccc","a+b?c+(*FAIL)",[trim]))),
    <<"aaabccc">> = iolist_to_binary(join(re:split("aaabccc","a+b?c+(*FAIL)",[{parts,
                                                                                                                                                                                        2}]))),
    <<"aaabccc">> = iolist_to_binary(join(re:split("aaabccc","a+b?c+(*FAIL)",[]))),
    <<"aaabccc">> = iolist_to_binary(join(re:split("aaabccc","a+b?(*PRUNE)c+(*FAIL)",[trim]))),
    <<"aaabccc">> = iolist_to_binary(join(re:split("aaabccc","a+b?(*PRUNE)c+(*FAIL)",[{parts,
                                                                                                                                                                                                        2}]))),
    <<"aaabccc">> = iolist_to_binary(join(re:split("aaabccc","a+b?(*PRUNE)c+(*FAIL)",[]))),
    <<"aaabccc">> = iolist_to_binary(join(re:split("aaabccc","a+b?(*COMMIT)c+(*FAIL)",[trim]))),
    <<"aaabccc">> = iolist_to_binary(join(re:split("aaabccc","a+b?(*COMMIT)c+(*FAIL)",[{parts,
                                                                                                                                                                                                          2}]))),
    <<"aaabccc">> = iolist_to_binary(join(re:split("aaabccc","a+b?(*COMMIT)c+(*FAIL)",[]))),
    <<"aaabcccaaabccc">> = iolist_to_binary(join(re:split("aaabcccaaabccc","a+b?(*SKIP)c+(*FAIL)",[trim]))),
    <<"aaabcccaaabccc">> = iolist_to_binary(join(re:split("aaabcccaaabccc","a+b?(*SKIP)c+(*FAIL)",[{parts,
                                                                                                                                                                                                                    2}]))),
    <<"aaabcccaaabccc">> = iolist_to_binary(join(re:split("aaabcccaaabccc","a+b?(*SKIP)c+(*FAIL)",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaxxxxxx","^(?:aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaxxxxxx","^(?:aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[{parts,
                                                                                                                                                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaxxxxxx","^(?:aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[]))),
    <<":++++++">> = iolist_to_binary(join(re:split("aaa++++++","^(?:aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[trim]))),
    <<":++++++">> = iolist_to_binary(join(re:split("aaa++++++","^(?:aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[{parts,
                                                                                                                                                                                                                                                                                                  2}]))),
    <<":++++++">> = iolist_to_binary(join(re:split("aaa++++++","^(?:aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[]))),
    <<"">> = iolist_to_binary(join(re:split("bbbxxxxx","^(?:aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("bbbxxxxx","^(?:aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[{parts,
                                                                                                                                                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("bbbxxxxx","^(?:aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[]))),
    <<":+++++">> = iolist_to_binary(join(re:split("bbb+++++","^(?:aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[trim]))),
    <<":+++++">> = iolist_to_binary(join(re:split("bbb+++++","^(?:aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[{parts,
                                                                                                                                                                                                                                                                                                2}]))),
    <<":+++++">> = iolist_to_binary(join(re:split("bbb+++++","^(?:aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[]))),
    <<"">> = iolist_to_binary(join(re:split("cccxxxx","^(?:aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("cccxxxx","^(?:aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[{parts,
                                                                                                                                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("cccxxxx","^(?:aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[]))),
    <<":++++">> = iolist_to_binary(join(re:split("ccc++++","^(?:aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[trim]))),
    <<":++++">> = iolist_to_binary(join(re:split("ccc++++","^(?:aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[{parts,
                                                                                                                                                                                                                                                                                              2}]))),
    <<":++++">> = iolist_to_binary(join(re:split("ccc++++","^(?:aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[]))),
    <<":ddddd">> = iolist_to_binary(join(re:split("dddddddd","^(?:aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[trim]))),
    <<":ddddd">> = iolist_to_binary(join(re:split("dddddddd","^(?:aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[{parts,
                                                                                                                                                                                                                                                                                                2}]))),
    <<":ddddd">> = iolist_to_binary(join(re:split("dddddddd","^(?:aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[]))),
    <<":aaaxxxxxx">> = iolist_to_binary(join(re:split("aaaxxxxxx","^(aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[trim]))),
    <<":aaaxxxxxx:">> = iolist_to_binary(join(re:split("aaaxxxxxx","^(aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[{parts,
                                                                                                                                                                                                                                                                                              2}]))),
    <<":aaaxxxxxx:">> = iolist_to_binary(join(re:split("aaaxxxxxx","^(aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[]))),
    <<":aaa:++++++">> = iolist_to_binary(join(re:split("aaa++++++","^(aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[trim]))),
    <<":aaa:++++++">> = iolist_to_binary(join(re:split("aaa++++++","^(aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[{parts,
                                                                                                                                                                                                                                                                                              2}]))),
    <<":aaa:++++++">> = iolist_to_binary(join(re:split("aaa++++++","^(aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[]))),
    <<":bbbxxxxx">> = iolist_to_binary(join(re:split("bbbxxxxx","^(aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[trim]))),
    <<":bbbxxxxx:">> = iolist_to_binary(join(re:split("bbbxxxxx","^(aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[{parts,
                                                                                                                                                                                                                                                                                            2}]))),
    <<":bbbxxxxx:">> = iolist_to_binary(join(re:split("bbbxxxxx","^(aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[]))),
    <<":bbb:+++++">> = iolist_to_binary(join(re:split("bbb+++++","^(aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[trim]))),
    <<":bbb:+++++">> = iolist_to_binary(join(re:split("bbb+++++","^(aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[{parts,
                                                                                                                                                                                                                                                                                            2}]))),
    <<":bbb:+++++">> = iolist_to_binary(join(re:split("bbb+++++","^(aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[]))),
    <<":cccxxxx">> = iolist_to_binary(join(re:split("cccxxxx","^(aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[trim]))),
    <<":cccxxxx:">> = iolist_to_binary(join(re:split("cccxxxx","^(aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[{parts,
                                                                                                                                                                                                                                                                                          2}]))),
    <<":cccxxxx:">> = iolist_to_binary(join(re:split("cccxxxx","^(aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[]))),
    <<":ccc:++++">> = iolist_to_binary(join(re:split("ccc++++","^(aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[trim]))),
    <<":ccc:++++">> = iolist_to_binary(join(re:split("ccc++++","^(aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[{parts,
                                                                                                                                                                                                                                                                                          2}]))),
    <<":ccc:++++">> = iolist_to_binary(join(re:split("ccc++++","^(aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[]))),
    <<":ddd:ddddd">> = iolist_to_binary(join(re:split("dddddddd","^(aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[trim]))),
    <<":ddd:ddddd">> = iolist_to_binary(join(re:split("dddddddd","^(aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[{parts,
                                                                                                                                                                                                                                                                                            2}]))),
    <<":ddd:ddddd">> = iolist_to_binary(join(re:split("dddddddd","^(aaa(*THEN)\\w{6}|bbb(*THEN)\\w{5}|ccc(*THEN)\\w{4}|\\w{3})",[]))),
    <<"aaabccc">> = iolist_to_binary(join(re:split("aaabccc","a+b?(*THEN)c+(*FAIL)",[trim]))),
    <<"aaabccc">> = iolist_to_binary(join(re:split("aaabccc","a+b?(*THEN)c+(*FAIL)",[{parts,
                                                                                                                                                                                                      2}]))),
    <<"aaabccc">> = iolist_to_binary(join(re:split("aaabccc","a+b?(*THEN)c+(*FAIL)",[]))),
    <<":AB:B">> = iolist_to_binary(join(re:split("AB","(A (A|B(*ACCEPT)|C) D)(E)",[extended,
                                                                                                                                                                                                    trim]))),
    <<":AB:B::">> = iolist_to_binary(join(re:split("AB","(A (A|B(*ACCEPT)|C) D)(E)",[extended,
                                                                                                                                                                                                      {parts,
                                                                                                                                                                                                       2}]))),
    <<":AB:B::">> = iolist_to_binary(join(re:split("AB","(A (A|B(*ACCEPT)|C) D)(E)",[extended]))),
    <<":AB:B::X">> = iolist_to_binary(join(re:split("ABX","(A (A|B(*ACCEPT)|C) D)(E)",[extended,
                                                                                                                                                                                                      trim]))),
    <<":AB:B::X">> = iolist_to_binary(join(re:split("ABX","(A (A|B(*ACCEPT)|C) D)(E)",[extended,
                                                                                                                                                                                                        {parts,
                                                                                                                                                                                                         2}]))),
    <<":AB:B::X">> = iolist_to_binary(join(re:split("ABX","(A (A|B(*ACCEPT)|C) D)(E)",[extended]))),
    <<":AAD:A:E">> = iolist_to_binary(join(re:split("AADE","(A (A|B(*ACCEPT)|C) D)(E)",[extended,
                                                                                                                                                                                                        trim]))),
    <<":AAD:A:E:">> = iolist_to_binary(join(re:split("AADE","(A (A|B(*ACCEPT)|C) D)(E)",[extended,
                                                                                                                                                                                                          {parts,
                                                                                                                                                                                                           2}]))),
    <<":AAD:A:E:">> = iolist_to_binary(join(re:split("AADE","(A (A|B(*ACCEPT)|C) D)(E)",[extended]))),
    <<":ACD:C:E">> = iolist_to_binary(join(re:split("ACDE","(A (A|B(*ACCEPT)|C) D)(E)",[extended,
                                                                                                                                                                                                        trim]))),
    <<":ACD:C:E:">> = iolist_to_binary(join(re:split("ACDE","(A (A|B(*ACCEPT)|C) D)(E)",[extended,
                                                                                                                                                                                                          {parts,
                                                                                                                                                                                                           2}]))),
    <<":ACD:C:E:">> = iolist_to_binary(join(re:split("ACDE","(A (A|B(*ACCEPT)|C) D)(E)",[extended]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(A (A|B(*ACCEPT)|C) D)(E)",[extended,
                                                                                                                                                                                                                    trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(A (A|B(*ACCEPT)|C) D)(E)",[extended,
                                                                                                                                                                                                                      {parts,
                                                                                                                                                                                                                       2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(A (A|B(*ACCEPT)|C) D)(E)",[extended]))),
    <<"AD">> = iolist_to_binary(join(re:split("AD","(A (A|B(*ACCEPT)|C) D)(E)",[extended,
                                                                                                                                                                                                    trim]))),
    <<"AD">> = iolist_to_binary(join(re:split("AD","(A (A|B(*ACCEPT)|C) D)(E)",[extended,
                                                                                                                                                                                                      {parts,
                                                                                                                                                                                                       2}]))),
    <<"AD">> = iolist_to_binary(join(re:split("AD","(A (A|B(*ACCEPT)|C) D)(E)",[extended]))),
    <<":1221:1">> = iolist_to_binary(join(re:split("1221","^\\W*+(?:((.)\\W*+(?1)\\W*+\\2|)|((.)\\W*+(?3)\\W*+\\4|\\W*+.\\W*+))\\W*+$",[caseless,
                                                                                                                                                                                                                                                                                                                     trim]))),
    <<":1221:1:::">> = iolist_to_binary(join(re:split("1221","^\\W*+(?:((.)\\W*+(?1)\\W*+\\2|)|((.)\\W*+(?3)\\W*+\\4|\\W*+.\\W*+))\\W*+$",[caseless,
                                                                                                                                                                                                                                                                                                                       {parts,
                                                                                                                                                                                                                                                                                                                        2}]))),
    <<":1221:1:::">> = iolist_to_binary(join(re:split("1221","^\\W*+(?:((.)\\W*+(?1)\\W*+\\2|)|((.)\\W*+(?3)\\W*+\\4|\\W*+.\\W*+))\\W*+$",[caseless]))),
    <<":::Satan, oscillate my metallic sonatas:S">> = iolist_to_binary(join(re:split("Satan, oscillate my metallic sonatas!","^\\W*+(?:((.)\\W*+(?1)\\W*+\\2|)|((.)\\W*+(?3)\\W*+\\4|\\W*+.\\W*+))\\W*+$",[caseless,
                                                                                                                                                                                                                                                                                                                                                                                       trim]))),
    <<":::Satan, oscillate my metallic sonatas:S:">> = iolist_to_binary(join(re:split("Satan, oscillate my metallic sonatas!","^\\W*+(?:((.)\\W*+(?1)\\W*+\\2|)|((.)\\W*+(?3)\\W*+\\4|\\W*+.\\W*+))\\W*+$",[caseless,
                                                                                                                                                                                                                                                                                                                                                                                         {parts,
                                                                                                                                                                                                                                                                                                                                                                                          2}]))),
    <<":::Satan, oscillate my metallic sonatas:S:">> = iolist_to_binary(join(re:split("Satan, oscillate my metallic sonatas!","^\\W*+(?:((.)\\W*+(?1)\\W*+\\2|)|((.)\\W*+(?3)\\W*+\\4|\\W*+.\\W*+))\\W*+$",[caseless]))),
    <<":::A man, a plan, a canal: Panama:A">> = iolist_to_binary(join(re:split("A man, a plan, a canal: Panama!","^\\W*+(?:((.)\\W*+(?1)\\W*+\\2|)|((.)\\W*+(?3)\\W*+\\4|\\W*+.\\W*+))\\W*+$",[caseless,
                                                                                                                                                                                                                                                                                                                                                                           trim]))),
    <<":::A man, a plan, a canal: Panama:A:">> = iolist_to_binary(join(re:split("A man, a plan, a canal: Panama!","^\\W*+(?:((.)\\W*+(?1)\\W*+\\2|)|((.)\\W*+(?3)\\W*+\\4|\\W*+.\\W*+))\\W*+$",[caseless,
                                                                                                                                                                                                                                                                                                                                                                             {parts,
                                                                                                                                                                                                                                                                                                                                                                              2}]))),
    <<":::A man, a plan, a canal: Panama:A:">> = iolist_to_binary(join(re:split("A man, a plan, a canal: Panama!","^\\W*+(?:((.)\\W*+(?1)\\W*+\\2|)|((.)\\W*+(?3)\\W*+\\4|\\W*+.\\W*+))\\W*+$",[caseless]))),
    <<":::Able was I ere I saw Elba:A">> = iolist_to_binary(join(re:split("Able was I ere I saw Elba.","^\\W*+(?:((.)\\W*+(?1)\\W*+\\2|)|((.)\\W*+(?3)\\W*+\\4|\\W*+.\\W*+))\\W*+$",[caseless,
                                                                                                                                                                                                                                                                                                                                                                 trim]))),
    <<":::Able was I ere I saw Elba:A:">> = iolist_to_binary(join(re:split("Able was I ere I saw Elba.","^\\W*+(?:((.)\\W*+(?1)\\W*+\\2|)|((.)\\W*+(?3)\\W*+\\4|\\W*+.\\W*+))\\W*+$",[caseless,
                                                                                                                                                                                                                                                                                                                                                                   {parts,
                                                                                                                                                                                                                                                                                                                                                                    2}]))),
    <<":::Able was I ere I saw Elba:A:">> = iolist_to_binary(join(re:split("Able was I ere I saw Elba.","^\\W*+(?:((.)\\W*+(?1)\\W*+\\2|)|((.)\\W*+(?3)\\W*+\\4|\\W*+.\\W*+))\\W*+$",[caseless]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^\\W*+(?:((.)\\W*+(?1)\\W*+\\2|)|((.)\\W*+(?3)\\W*+\\4|\\W*+.\\W*+))\\W*+$",[caseless,
                                                                                                                                                                                                                                                                                                                                   trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^\\W*+(?:((.)\\W*+(?1)\\W*+\\2|)|((.)\\W*+(?3)\\W*+\\4|\\W*+.\\W*+))\\W*+$",[caseless,
                                                                                                                                                                                                                                                                                                                                     {parts,
                                                                                                                                                                                                                                                                                                                                      2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^\\W*+(?:((.)\\W*+(?1)\\W*+\\2|)|((.)\\W*+(?3)\\W*+\\4|\\W*+.\\W*+))\\W*+$",[caseless]))),
    <<"The quick brown fox">> = iolist_to_binary(join(re:split("The quick brown fox","^\\W*+(?:((.)\\W*+(?1)\\W*+\\2|)|((.)\\W*+(?3)\\W*+\\4|\\W*+.\\W*+))\\W*+$",[caseless,
                                                                                                                                                                                                                                                                                                                                                   trim]))),
    <<"The quick brown fox">> = iolist_to_binary(join(re:split("The quick brown fox","^\\W*+(?:((.)\\W*+(?1)\\W*+\\2|)|((.)\\W*+(?3)\\W*+\\4|\\W*+.\\W*+))\\W*+$",[caseless,
                                                                                                                                                                                                                                                                                                                                                     {parts,
                                                                                                                                                                                                                                                                                                                                                      2}]))),
    <<"The quick brown fox">> = iolist_to_binary(join(re:split("The quick brown fox","^\\W*+(?:((.)\\W*+(?1)\\W*+\\2|)|((.)\\W*+(?3)\\W*+\\4|\\W*+.\\W*+))\\W*+$",[caseless]))),
    <<":a">> = iolist_to_binary(join(re:split("a","^((.)(?1)\\2|.)$",[trim]))),
    <<":a::">> = iolist_to_binary(join(re:split("a","^((.)(?1)\\2|.)$",[{parts,
                                                                                                                                                                                    2}]))),
    <<":a::">> = iolist_to_binary(join(re:split("a","^((.)(?1)\\2|.)$",[]))),
    <<":aba:a">> = iolist_to_binary(join(re:split("aba","^((.)(?1)\\2|.)$",[trim]))),
    <<":aba:a:">> = iolist_to_binary(join(re:split("aba","^((.)(?1)\\2|.)$",[{parts,
                                                                                                                                                                                        2}]))),
    <<":aba:a:">> = iolist_to_binary(join(re:split("aba","^((.)(?1)\\2|.)$",[]))),
    <<":aabaa:a">> = iolist_to_binary(join(re:split("aabaa","^((.)(?1)\\2|.)$",[trim]))),
    <<":aabaa:a:">> = iolist_to_binary(join(re:split("aabaa","^((.)(?1)\\2|.)$",[{parts,
                                                                                                                                                                                            2}]))),
    <<":aabaa:a:">> = iolist_to_binary(join(re:split("aabaa","^((.)(?1)\\2|.)$",[]))),
    <<":abcdcba:a">> = iolist_to_binary(join(re:split("abcdcba","^((.)(?1)\\2|.)$",[trim]))),
    <<":abcdcba:a:">> = iolist_to_binary(join(re:split("abcdcba","^((.)(?1)\\2|.)$",[{parts,
                                                                                                                                                                                                2}]))),
    <<":abcdcba:a:">> = iolist_to_binary(join(re:split("abcdcba","^((.)(?1)\\2|.)$",[]))),
    <<":pqaabaaqp:p">> = iolist_to_binary(join(re:split("pqaabaaqp","^((.)(?1)\\2|.)$",[trim]))),
    <<":pqaabaaqp:p:">> = iolist_to_binary(join(re:split("pqaabaaqp","^((.)(?1)\\2|.)$",[{parts,
                                                                                                                                                                                                    2}]))),
    <<":pqaabaaqp:p:">> = iolist_to_binary(join(re:split("pqaabaaqp","^((.)(?1)\\2|.)$",[]))),
    <<":ablewasiereisawelba:a">> = iolist_to_binary(join(re:split("ablewasiereisawelba","^((.)(?1)\\2|.)$",[trim]))),
    <<":ablewasiereisawelba:a:">> = iolist_to_binary(join(re:split("ablewasiereisawelba","^((.)(?1)\\2|.)$",[{parts,
                                                                                                                                                                                                                        2}]))),
    <<":ablewasiereisawelba:a:">> = iolist_to_binary(join(re:split("ablewasiereisawelba","^((.)(?1)\\2|.)$",[]))),
    <<"rhubarb">> = iolist_to_binary(join(re:split("rhubarb","^((.)(?1)\\2|.)$",[trim]))),
    <<"rhubarb">> = iolist_to_binary(join(re:split("rhubarb","^((.)(?1)\\2|.)$",[{parts,
                                                                                                                                                                                                2}]))),
    <<"rhubarb">> = iolist_to_binary(join(re:split("rhubarb","^((.)(?1)\\2|.)$",[]))),
    <<"the quick brown fox">> = iolist_to_binary(join(re:split("the quick brown fox","^((.)(?1)\\2|.)$",[trim]))),
    <<"the quick brown fox">> = iolist_to_binary(join(re:split("the quick brown fox","^((.)(?1)\\2|.)$",[{parts,
                                                                                                                                                                                                                        2}]))),
    <<"the quick brown fox">> = iolist_to_binary(join(re:split("the quick brown fox","^((.)(?1)\\2|.)$",[]))),
    <<"b:a:z">> = iolist_to_binary(join(re:split("baz","(a)(?<=b(?1))",[trim]))),
    <<"b:a:z">> = iolist_to_binary(join(re:split("baz","(a)(?<=b(?1))",[{parts,
                                                                                                                                                                                2}]))),
    <<"b:a:z">> = iolist_to_binary(join(re:split("baz","(a)(?<=b(?1))",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(a)(?<=b(?1))",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(a)(?<=b(?1))",[{parts,
                                                                                                                                                                                              2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(a)(?<=b(?1))",[]))),
    <<"caz">> = iolist_to_binary(join(re:split("caz","(a)(?<=b(?1))",[trim]))),
    <<"caz">> = iolist_to_binary(join(re:split("caz","(a)(?<=b(?1))",[{parts,
                                                                                                                                                                                2}]))),
    <<"caz">> = iolist_to_binary(join(re:split("caz","(a)(?<=b(?1))",[]))),
    <<"zba:a:z">> = iolist_to_binary(join(re:split("zbaaz","(?<=b(?1))(a)",[trim]))),
    <<"zba:a:z">> = iolist_to_binary(join(re:split("zbaaz","(?<=b(?1))(a)",[{parts,
                                                                                                                                                                                    2}]))),
    <<"zba:a:z">> = iolist_to_binary(join(re:split("zbaaz","(?<=b(?1))(a)",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<=b(?1))(a)",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<=b(?1))(a)",[{parts,
                                                                                                                                                                                              2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<=b(?1))(a)",[]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","(?<=b(?1))(a)",[trim]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","(?<=b(?1))(a)",[{parts,
                                                                                                                                                                                2}]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","(?<=b(?1))(a)",[]))),
    <<"b:a:z">> = iolist_to_binary(join(re:split("baz","(?<X>a)(?<=b(?&X))",[trim]))),
    <<"b:a:z">> = iolist_to_binary(join(re:split("baz","(?<X>a)(?<=b(?&X))",[{parts,
                                                                                                                                                                                          2}]))),
    <<"b:a:z">> = iolist_to_binary(join(re:split("baz","(?<X>a)(?<=b(?&X))",[]))),
    <<":abc">> = iolist_to_binary(join(re:split("abcabc","^(?|(abc)|(def))\\1",[trim]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abcabc","^(?|(abc)|(def))\\1",[{parts,
                                                                                                                                                                                                   2}]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abcabc","^(?|(abc)|(def))\\1",[]))),
    <<":def">> = iolist_to_binary(join(re:split("defdef","^(?|(abc)|(def))\\1",[trim]))),
    <<":def:">> = iolist_to_binary(join(re:split("defdef","^(?|(abc)|(def))\\1",[{parts,
                                                                                                                                                                                                   2}]))),
    <<":def:">> = iolist_to_binary(join(re:split("defdef","^(?|(abc)|(def))\\1",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?|(abc)|(def))\\1",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?|(abc)|(def))\\1",[{parts,
                                                                                                                                                                                                           2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?|(abc)|(def))\\1",[]))),
    <<"abcdef">> = iolist_to_binary(join(re:split("abcdef","^(?|(abc)|(def))\\1",[trim]))),
    <<"abcdef">> = iolist_to_binary(join(re:split("abcdef","^(?|(abc)|(def))\\1",[{parts,
                                                                                                                                                                                                   2}]))),
    <<"abcdef">> = iolist_to_binary(join(re:split("abcdef","^(?|(abc)|(def))\\1",[]))),
    <<"defabc">> = iolist_to_binary(join(re:split("defabc","^(?|(abc)|(def))\\1",[trim]))),
    <<"defabc">> = iolist_to_binary(join(re:split("defabc","^(?|(abc)|(def))\\1",[{parts,
                                                                                                                                                                                                   2}]))),
    <<"defabc">> = iolist_to_binary(join(re:split("defabc","^(?|(abc)|(def))\\1",[]))),
    ok.
run43() ->
    <<":abc">> = iolist_to_binary(join(re:split("abcabc","^(?|(abc)|(def))(?1)",[trim]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abcabc","^(?|(abc)|(def))(?1)",[{parts,
                                                                                                                                                                                                    2}]))),
    <<":abc:">> = iolist_to_binary(join(re:split("abcabc","^(?|(abc)|(def))(?1)",[]))),
    <<":def">> = iolist_to_binary(join(re:split("defabc","^(?|(abc)|(def))(?1)",[trim]))),
    <<":def:">> = iolist_to_binary(join(re:split("defabc","^(?|(abc)|(def))(?1)",[{parts,
                                                                                                                                                                                                    2}]))),
    <<":def:">> = iolist_to_binary(join(re:split("defabc","^(?|(abc)|(def))(?1)",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?|(abc)|(def))(?1)",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?|(abc)|(def))(?1)",[{parts,
                                                                                                                                                                                                            2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?|(abc)|(def))(?1)",[]))),
    <<"defdef">> = iolist_to_binary(join(re:split("defdef","^(?|(abc)|(def))(?1)",[trim]))),
    <<"defdef">> = iolist_to_binary(join(re:split("defdef","^(?|(abc)|(def))(?1)",[{parts,
                                                                                                                                                                                                    2}]))),
    <<"defdef">> = iolist_to_binary(join(re:split("defdef","^(?|(abc)|(def))(?1)",[]))),
    <<"abcdef">> = iolist_to_binary(join(re:split("abcdef","^(?|(abc)|(def))(?1)",[trim]))),
    <<"abcdef">> = iolist_to_binary(join(re:split("abcdef","^(?|(abc)|(def))(?1)",[{parts,
                                                                                                                                                                                                    2}]))),
    <<"abcdef">> = iolist_to_binary(join(re:split("abcdef","^(?|(abc)|(def))(?1)",[]))),
    <<"A:C:D">> = iolist_to_binary(join(re:split("ABCD","(?:(?1)|B)(A(*F)|C)",[trim]))),
    <<"A:C:D">> = iolist_to_binary(join(re:split("ABCD","(?:(?1)|B)(A(*F)|C)",[{parts,
                                                                                                                                                                                              2}]))),
    <<"A:C:D">> = iolist_to_binary(join(re:split("ABCD","(?:(?1)|B)(A(*F)|C)",[]))),
    <<":C:D">> = iolist_to_binary(join(re:split("CCD","(?:(?1)|B)(A(*F)|C)",[trim]))),
    <<":C:D">> = iolist_to_binary(join(re:split("CCD","(?:(?1)|B)(A(*F)|C)",[{parts,
                                                                                                                                                                                            2}]))),
    <<":C:D">> = iolist_to_binary(join(re:split("CCD","(?:(?1)|B)(A(*F)|C)",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?:(?1)|B)(A(*F)|C)",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?:(?1)|B)(A(*F)|C)",[{parts,
                                                                                                                                                                                                          2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?:(?1)|B)(A(*F)|C)",[]))),
    <<"CAD">> = iolist_to_binary(join(re:split("CAD","(?:(?1)|B)(A(*F)|C)",[trim]))),
    <<"CAD">> = iolist_to_binary(join(re:split("CAD","(?:(?1)|B)(A(*F)|C)",[{parts,
                                                                                                                                                                                            2}]))),
    <<"CAD">> = iolist_to_binary(join(re:split("CAD","(?:(?1)|B)(A(*F)|C)",[]))),
    <<":C:D">> = iolist_to_binary(join(re:split("CCD","^(?:(?1)|B)(A(*F)|C)",[trim]))),
    <<":C:D">> = iolist_to_binary(join(re:split("CCD","^(?:(?1)|B)(A(*F)|C)",[{parts,
                                                                                                                                                                                              2}]))),
    <<":C:D">> = iolist_to_binary(join(re:split("CCD","^(?:(?1)|B)(A(*F)|C)",[]))),
    <<":C:D">> = iolist_to_binary(join(re:split("BCD","^(?:(?1)|B)(A(*F)|C)",[trim]))),
    <<":C:D">> = iolist_to_binary(join(re:split("BCD","^(?:(?1)|B)(A(*F)|C)",[{parts,
                                                                                                                                                                                              2}]))),
    <<":C:D">> = iolist_to_binary(join(re:split("BCD","^(?:(?1)|B)(A(*F)|C)",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?:(?1)|B)(A(*F)|C)",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?:(?1)|B)(A(*F)|C)",[{parts,
                                                                                                                                                                                                            2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?:(?1)|B)(A(*F)|C)",[]))),
    <<"ABCD">> = iolist_to_binary(join(re:split("ABCD","^(?:(?1)|B)(A(*F)|C)",[trim]))),
    <<"ABCD">> = iolist_to_binary(join(re:split("ABCD","^(?:(?1)|B)(A(*F)|C)",[{parts,
                                                                                                                                                                                                2}]))),
    <<"ABCD">> = iolist_to_binary(join(re:split("ABCD","^(?:(?1)|B)(A(*F)|C)",[]))),
    <<"CAD">> = iolist_to_binary(join(re:split("CAD","^(?:(?1)|B)(A(*F)|C)",[trim]))),
    <<"CAD">> = iolist_to_binary(join(re:split("CAD","^(?:(?1)|B)(A(*F)|C)",[{parts,
                                                                                                                                                                                              2}]))),
    <<"CAD">> = iolist_to_binary(join(re:split("CAD","^(?:(?1)|B)(A(*F)|C)",[]))),
    <<"BAD">> = iolist_to_binary(join(re:split("BAD","^(?:(?1)|B)(A(*F)|C)",[trim]))),
    <<"BAD">> = iolist_to_binary(join(re:split("BAD","^(?:(?1)|B)(A(*F)|C)",[{parts,
                                                                                                                                                                                              2}]))),
    <<"BAD">> = iolist_to_binary(join(re:split("BAD","^(?:(?1)|B)(A(*F)|C)",[]))),
    <<":A:D">> = iolist_to_binary(join(re:split("AAD","(?:(?1)|B)(A(*ACCEPT)XX|C)D",[trim]))),
    <<":A:D">> = iolist_to_binary(join(re:split("AAD","(?:(?1)|B)(A(*ACCEPT)XX|C)D",[{parts,
                                                                                                                                                                                                            2}]))),
    <<":A:D">> = iolist_to_binary(join(re:split("AAD","(?:(?1)|B)(A(*ACCEPT)XX|C)D",[]))),
    <<":C">> = iolist_to_binary(join(re:split("ACD","(?:(?1)|B)(A(*ACCEPT)XX|C)D",[trim]))),
    <<":C:">> = iolist_to_binary(join(re:split("ACD","(?:(?1)|B)(A(*ACCEPT)XX|C)D",[{parts,
                                                                                                                                                                                                            2}]))),
    <<":C:">> = iolist_to_binary(join(re:split("ACD","(?:(?1)|B)(A(*ACCEPT)XX|C)D",[]))),
    <<":A:D">> = iolist_to_binary(join(re:split("BAD","(?:(?1)|B)(A(*ACCEPT)XX|C)D",[trim]))),
    <<":A:D">> = iolist_to_binary(join(re:split("BAD","(?:(?1)|B)(A(*ACCEPT)XX|C)D",[{parts,
                                                                                                                                                                                                            2}]))),
    <<":A:D">> = iolist_to_binary(join(re:split("BAD","(?:(?1)|B)(A(*ACCEPT)XX|C)D",[]))),
    <<":C">> = iolist_to_binary(join(re:split("BCD","(?:(?1)|B)(A(*ACCEPT)XX|C)D",[trim]))),
    <<":C:">> = iolist_to_binary(join(re:split("BCD","(?:(?1)|B)(A(*ACCEPT)XX|C)D",[{parts,
                                                                                                                                                                                                            2}]))),
    <<":C:">> = iolist_to_binary(join(re:split("BCD","(?:(?1)|B)(A(*ACCEPT)XX|C)D",[]))),
    <<":A:X">> = iolist_to_binary(join(re:split("BAX","(?:(?1)|B)(A(*ACCEPT)XX|C)D",[trim]))),
    <<":A:X">> = iolist_to_binary(join(re:split("BAX","(?:(?1)|B)(A(*ACCEPT)XX|C)D",[{parts,
                                                                                                                                                                                                            2}]))),
    <<":A:X">> = iolist_to_binary(join(re:split("BAX","(?:(?1)|B)(A(*ACCEPT)XX|C)D",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?:(?1)|B)(A(*ACCEPT)XX|C)D",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?:(?1)|B)(A(*ACCEPT)XX|C)D",[{parts,
                                                                                                                                                                                                                          2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?:(?1)|B)(A(*ACCEPT)XX|C)D",[]))),
    <<"ACX">> = iolist_to_binary(join(re:split("ACX","(?:(?1)|B)(A(*ACCEPT)XX|C)D",[trim]))),
    <<"ACX">> = iolist_to_binary(join(re:split("ACX","(?:(?1)|B)(A(*ACCEPT)XX|C)D",[{parts,
                                                                                                                                                                                                            2}]))),
    <<"ACX">> = iolist_to_binary(join(re:split("ACX","(?:(?1)|B)(A(*ACCEPT)XX|C)D",[]))),
    <<"ABC">> = iolist_to_binary(join(re:split("ABC","(?:(?1)|B)(A(*ACCEPT)XX|C)D",[trim]))),
    <<"ABC">> = iolist_to_binary(join(re:split("ABC","(?:(?1)|B)(A(*ACCEPT)XX|C)D",[{parts,
                                                                                                                                                                                                            2}]))),
    <<"ABC">> = iolist_to_binary(join(re:split("ABC","(?:(?1)|B)(A(*ACCEPT)XX|C)D",[]))),
    <<"">> = iolist_to_binary(join(re:split("BAC","(?(DEFINE)(A))B(?1)C",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("BAC","(?(DEFINE)(A))B(?1)C",[{parts,
                                                                                                                                                                                              2}]))),
    <<"::">> = iolist_to_binary(join(re:split("BAC","(?(DEFINE)(A))B(?1)C",[]))),
    <<"">> = iolist_to_binary(join(re:split("BAAC","(?(DEFINE)((A)\\2))B(?1)C",[trim]))),
    <<":::">> = iolist_to_binary(join(re:split("BAAC","(?(DEFINE)((A)\\2))B(?1)C",[{parts,
                                                                                                                                                                                                           2}]))),
    <<":::">> = iolist_to_binary(join(re:split("BAAC","(?(DEFINE)((A)\\2))B(?1)C",[]))),
    <<":(ab(cd)ef):ef">> = iolist_to_binary(join(re:split("(ab(cd)ef)","(?<pn> \\( ( [^()]++ | (?&pn) )* \\) )",[extended,
                                                                                                                                                                                                                                                trim]))),
    <<":(ab(cd)ef):ef:">> = iolist_to_binary(join(re:split("(ab(cd)ef)","(?<pn> \\( ( [^()]++ | (?&pn) )* \\) )",[extended,
                                                                                                                                                                                                                                                  {parts,
                                                                                                                                                                                                                                                   2}]))),
    <<":(ab(cd)ef):ef:">> = iolist_to_binary(join(re:split("(ab(cd)ef)","(?<pn> \\( ( [^()]++ | (?&pn) )* \\) )",[extended]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?=a(*SKIP)b|ac)",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?=a(*SKIP)b|ac)",[{parts,
                                                                                                                                                                                                      2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?=a(*SKIP)b|ac)",[]))),
    <<"ac">> = iolist_to_binary(join(re:split("ac","^(?=a(*SKIP)b|ac)",[trim]))),
    <<"ac">> = iolist_to_binary(join(re:split("ac","^(?=a(*SKIP)b|ac)",[{parts,
                                                                                                                                                                                      2}]))),
    <<"ac">> = iolist_to_binary(join(re:split("ac","^(?=a(*SKIP)b|ac)",[]))),
    <<"ab">> = iolist_to_binary(join(re:split("ab","^(?=a(*PRUNE)b)",[trim]))),
    <<"ab">> = iolist_to_binary(join(re:split("ab","^(?=a(*PRUNE)b)",[{parts,
                                                                                                                                                                                  2}]))),
    <<"ab">> = iolist_to_binary(join(re:split("ab","^(?=a(*PRUNE)b)",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?=a(*PRUNE)b)",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?=a(*PRUNE)b)",[{parts,
                                                                                                                                                                                                  2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?=a(*PRUNE)b)",[]))),
    <<"ac">> = iolist_to_binary(join(re:split("ac","^(?=a(*PRUNE)b)",[trim]))),
    <<"ac">> = iolist_to_binary(join(re:split("ac","^(?=a(*PRUNE)b)",[{parts,
                                                                                                                                                                                  2}]))),
    <<"ac">> = iolist_to_binary(join(re:split("ac","^(?=a(*PRUNE)b)",[]))),
    <<"ac">> = iolist_to_binary(join(re:split("ac","^(?=a(*ACCEPT)b)",[trim]))),
    <<"ac">> = iolist_to_binary(join(re:split("ac","^(?=a(*ACCEPT)b)",[{parts,
                                                                                                                                                                                    2}]))),
    <<"ac">> = iolist_to_binary(join(re:split("ac","^(?=a(*ACCEPT)b)",[]))),
    <<"a">> = iolist_to_binary(join(re:split("ab","(?>a\\Kb)",[trim]))),
    <<"a:">> = iolist_to_binary(join(re:split("ab","(?>a\\Kb)",[{parts,
                                                                                                                                                                       2}]))),
    <<"a:">> = iolist_to_binary(join(re:split("ab","(?>a\\Kb)",[]))),
    <<"a:ab">> = iolist_to_binary(join(re:split("ab","((?>a\\Kb))",[trim]))),
    <<"a:ab:">> = iolist_to_binary(join(re:split("ab","((?>a\\Kb))",[{parts,
                                                                                                                                                                           2}]))),
    <<"a:ab:">> = iolist_to_binary(join(re:split("ab","((?>a\\Kb))",[]))),
    <<"a:ab">> = iolist_to_binary(join(re:split("ab","(a\\Kb)",[trim]))),
    <<"a:ab:">> = iolist_to_binary(join(re:split("ab","(a\\Kb)",[{parts,
                                                                                                                                                                   2}]))),
    <<"a:ab:">> = iolist_to_binary(join(re:split("ab","(a\\Kb)",[]))),
    <<"">> = iolist_to_binary(join(re:split("ac","^a\\Kcz|ac",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("ac","^a\\Kcz|ac",[{parts,
                                                                                                                                                                         2}]))),
    <<":">> = iolist_to_binary(join(re:split("ac","^a\\Kcz|ac",[]))),
    <<"">> = iolist_to_binary(join(re:split("ab","(?>a\\Kbz|ab)",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("ab","(?>a\\Kbz|ab)",[{parts,
                                                                                                                                                                               2}]))),
    <<":">> = iolist_to_binary(join(re:split("ab","(?>a\\Kbz|ab)",[]))),
    <<"a">> = iolist_to_binary(join(re:split("ab","^(?&t)(?(DEFINE)(?<t>a\\Kb))$",[trim]))),
    <<"a::">> = iolist_to_binary(join(re:split("ab","^(?&t)(?(DEFINE)(?<t>a\\Kb))$",[{parts,
                                                                                                                                                                                                                2}]))),
    <<"a::">> = iolist_to_binary(join(re:split("ab","^(?&t)(?(DEFINE)(?<t>a\\Kb))$",[]))),
    <<":c">> = iolist_to_binary(join(re:split("a(b)c","^([^()]|\\((?1)*\\))*$",[trim]))),
    <<":c:">> = iolist_to_binary(join(re:split("a(b)c","^([^()]|\\((?1)*\\))*$",[{parts,
                                                                                                                                                                                                         2}]))),
    <<":c:">> = iolist_to_binary(join(re:split("a(b)c","^([^()]|\\((?1)*\\))*$",[]))),
    <<":e">> = iolist_to_binary(join(re:split("a(b(c)d)e","^([^()]|\\((?1)*\\))*$",[trim]))),
    <<":e:">> = iolist_to_binary(join(re:split("a(b(c)d)e","^([^()]|\\((?1)*\\))*$",[{parts,
                                                                                                                                                                                                                 2}]))),
    <<":e:">> = iolist_to_binary(join(re:split("a(b(c)d)e","^([^()]|\\((?1)*\\))*$",[]))),
    <<":0">> = iolist_to_binary(join(re:split("0","(?P<L1>(?P<L2>0)(?P>L1)|(?P>L2))",[trim]))),
    <<":0::">> = iolist_to_binary(join(re:split("0","(?P<L1>(?P<L2>0)(?P>L1)|(?P>L2))",[{parts,
                                                                                                                                                                                                                  2}]))),
    <<":0::">> = iolist_to_binary(join(re:split("0","(?P<L1>(?P<L2>0)(?P>L1)|(?P>L2))",[]))),
    <<":00:0">> = iolist_to_binary(join(re:split("00","(?P<L1>(?P<L2>0)(?P>L1)|(?P>L2))",[trim]))),
    <<":00:0:">> = iolist_to_binary(join(re:split("00","(?P<L1>(?P<L2>0)(?P>L1)|(?P>L2))",[{parts,
                                                                                                                                                                                                                    2}]))),
    <<":00:0:">> = iolist_to_binary(join(re:split("00","(?P<L1>(?P<L2>0)(?P>L1)|(?P>L2))",[]))),
    <<":0000:0">> = iolist_to_binary(join(re:split("0000","(?P<L1>(?P<L2>0)(?P>L1)|(?P>L2))",[trim]))),
    <<":0000:0:">> = iolist_to_binary(join(re:split("0000","(?P<L1>(?P<L2>0)(?P>L1)|(?P>L2))",[{parts,
                                                                                                                                                                                                                        2}]))),
    <<":0000:0:">> = iolist_to_binary(join(re:split("0000","(?P<L1>(?P<L2>0)(?P>L1)|(?P>L2))",[]))),
    <<":0:0">> = iolist_to_binary(join(re:split("0","(?P<L1>(?P<L2>0)|(?P>L2)(?P>L1))",[trim]))),
    <<":0:0:">> = iolist_to_binary(join(re:split("0","(?P<L1>(?P<L2>0)|(?P>L2)(?P>L1))",[{parts,
                                                                                                                                                                                                                  2}]))),
    <<":0:0:">> = iolist_to_binary(join(re:split("0","(?P<L1>(?P<L2>0)|(?P>L2)(?P>L1))",[]))),
    <<":0:0::0:0">> = iolist_to_binary(join(re:split("00","(?P<L1>(?P<L2>0)|(?P>L2)(?P>L1))",[trim]))),
    <<":0:0:0">> = iolist_to_binary(join(re:split("00","(?P<L1>(?P<L2>0)|(?P>L2)(?P>L1))",[{parts,
                                                                                                                                                                                                                    2}]))),
    <<":0:0::0:0:">> = iolist_to_binary(join(re:split("00","(?P<L1>(?P<L2>0)|(?P>L2)(?P>L1))",[]))),
    <<":0:0::0:0::0:0::0:0">> = iolist_to_binary(join(re:split("0000","(?P<L1>(?P<L2>0)|(?P>L2)(?P>L1))",[trim]))),
    <<":0:0:000">> = iolist_to_binary(join(re:split("0000","(?P<L1>(?P<L2>0)|(?P>L2)(?P>L1))",[{parts,
                                                                                                                                                                                                                        2}]))),
    <<":0:0::0:0::0:0::0:0:">> = iolist_to_binary(join(re:split("0000","(?P<L1>(?P<L2>0)|(?P>L2)(?P>L1))",[]))),
    ok.
run44() ->
    <<"ACABX">> = iolist_to_binary(join(re:split("ACABX","A(*COMMIT)(B|D)",[trim]))),
    <<"ACABX">> = iolist_to_binary(join(re:split("ACABX","A(*COMMIT)(B|D)",[{parts,
                                                                                                                                                                                        2}]))),
    <<"ACABX">> = iolist_to_binary(join(re:split("ACABX","A(*COMMIT)(B|D)",[]))),
    <<":A:B:C:DEFG">> = iolist_to_binary(join(re:split("ABCDEFG","(*COMMIT)(A|P)(B|P)(C|P)",[trim]))),
    <<":A:B:C:DEFG">> = iolist_to_binary(join(re:split("ABCDEFG","(*COMMIT)(A|P)(B|P)(C|P)",[{parts,
                                                                                                                                                                                                              2}]))),
    <<":A:B:C:DEFG">> = iolist_to_binary(join(re:split("ABCDEFG","(*COMMIT)(A|P)(B|P)(C|P)",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(*COMMIT)(A|P)(B|P)(C|P)",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(*COMMIT)(A|P)(B|P)(C|P)",[{parts,
                                                                                                                                                                                                                    2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(*COMMIT)(A|P)(B|P)(C|P)",[]))),
    <<"DEFGABC">> = iolist_to_binary(join(re:split("DEFGABC","(*COMMIT)(A|P)(B|P)(C|P)",[trim]))),
    <<"DEFGABC">> = iolist_to_binary(join(re:split("DEFGABC","(*COMMIT)(A|P)(B|P)(C|P)",[{parts,
                                                                                                                                                                                                              2}]))),
    <<"DEFGABC">> = iolist_to_binary(join(re:split("DEFGABC","(*COMMIT)(A|P)(B|P)(C|P)",[]))),
    <<":a">> = iolist_to_binary(join(re:split("abbb","(\\w+)(?>b(*COMMIT))\\w{2}",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("abbb","(\\w+)(?>b(*COMMIT))\\w{2}",[{parts,
                                                                                                                                                                                                              2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("abbb","(\\w+)(?>b(*COMMIT))\\w{2}",[]))),
    <<"abbb">> = iolist_to_binary(join(re:split("abbb","(\\w+)b(*COMMIT)\\w{2}",[trim]))),
    <<"abbb">> = iolist_to_binary(join(re:split("abbb","(\\w+)b(*COMMIT)\\w{2}",[{parts,
                                                                                                                                                                                                      2}]))),
    <<"abbb">> = iolist_to_binary(join(re:split("abbb","(\\w+)b(*COMMIT)\\w{2}",[]))),
    <<"b::c">> = iolist_to_binary(join(re:split("bac","(?&t)(?#()(?(DEFINE)(?<t>a))",[trim]))),
    <<"b::c">> = iolist_to_binary(join(re:split("bac","(?&t)(?#()(?(DEFINE)(?<t>a))",[{parts,
                                                                                                                                                                                                              2}]))),
    <<"b::c">> = iolist_to_binary(join(re:split("bac","(?&t)(?#()(?(DEFINE)(?<t>a))",[]))),
    <<"yes">> = iolist_to_binary(join(re:split("yes","(?>(*COMMIT)(?>yes|no)(*THEN)(*F))?",[trim]))),
    <<"yes">> = iolist_to_binary(join(re:split("yes","(?>(*COMMIT)(?>yes|no)(*THEN)(*F))?",[{parts,
                                                                                                                                                                                                                            2}]))),
    <<"yes">> = iolist_to_binary(join(re:split("yes","(?>(*COMMIT)(?>yes|no)(*THEN)(*F))?",[]))),
    <<"yes">> = iolist_to_binary(join(re:split("yes","(?>(*COMMIT)(yes|no)(*THEN)(*F))?",[trim]))),
    <<"yes">> = iolist_to_binary(join(re:split("yes","(?>(*COMMIT)(yes|no)(*THEN)(*F))?",[{parts,
                                                                                                                                                                                                                        2}]))),
    <<"yes">> = iolist_to_binary(join(re:split("yes","(?>(*COMMIT)(yes|no)(*THEN)(*F))?",[]))),
    <<"">> = iolist_to_binary(join(re:split("bc","b?(*SKIP)c",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("bc","b?(*SKIP)c",[{parts,
                                                                                                                                                                        2}]))),
    <<":">> = iolist_to_binary(join(re:split("bc","b?(*SKIP)c",[]))),
    <<"a">> = iolist_to_binary(join(re:split("abc","b?(*SKIP)c",[trim]))),
    <<"a:">> = iolist_to_binary(join(re:split("abc","b?(*SKIP)c",[{parts,
                                                                                                                                                                          2}]))),
    <<"a:">> = iolist_to_binary(join(re:split("abc","b?(*SKIP)c",[]))),
    ok.
run45() ->
    <<"a">> = iolist_to_binary(join(re:split("a","(*SKIP)bc",[trim]))),
    <<"a">> = iolist_to_binary(join(re:split("a","(*SKIP)bc",[{parts,
                                                                                                                                                                    2}]))),
    <<"a">> = iolist_to_binary(join(re:split("a","(*SKIP)bc",[]))),
    <<"a">> = iolist_to_binary(join(re:split("a","(*SKIP)b",[trim]))),
    <<"a">> = iolist_to_binary(join(re:split("a","(*SKIP)b",[{parts,
                                                                                                                                                                  2}]))),
    <<"a">> = iolist_to_binary(join(re:split("a","(*SKIP)b",[]))),
    <<"x::x::x">> = iolist_to_binary(join(re:split("xxx","(?P<abn>(?P=abn)xxx|)+",[trim]))),
    <<"x::xx">> = iolist_to_binary(join(re:split("xxx","(?P<abn>(?P=abn)xxx|)+",[{parts,
                                                                                                                                                                                                  2}]))),
    <<"x::x::x::">> = iolist_to_binary(join(re:split("xxx","(?P<abn>(?P=abn)xxx|)+",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aa","(?i:([^b]))(?1)",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aa","(?i:([^b]))(?1)",[{parts,
                                                                                                                                                                                  2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aa","(?i:([^b]))(?1)",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aA","(?i:([^b]))(?1)",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aA","(?i:([^b]))(?1)",[{parts,
                                                                                                                                                                                  2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aA","(?i:([^b]))(?1)",[]))),
    <<":*:: ::a::l::r">> = iolist_to_binary(join(re:split("** Failers","(?i:([^b]))(?1)",[trim]))),
    <<":*: Failers">> = iolist_to_binary(join(re:split("** Failers","(?i:([^b]))(?1)",[{parts,
                                                                                                                                                                                                  2}]))),
    <<":*:: ::a::l::r:">> = iolist_to_binary(join(re:split("** Failers","(?i:([^b]))(?1)",[]))),
    <<"ab">> = iolist_to_binary(join(re:split("ab","(?i:([^b]))(?1)",[trim]))),
    <<"ab">> = iolist_to_binary(join(re:split("ab","(?i:([^b]))(?1)",[{parts,
                                                                                                                                                                                  2}]))),
    <<"ab">> = iolist_to_binary(join(re:split("ab","(?i:([^b]))(?1)",[]))),
    <<"aB">> = iolist_to_binary(join(re:split("aB","(?i:([^b]))(?1)",[trim]))),
    <<"aB">> = iolist_to_binary(join(re:split("aB","(?i:([^b]))(?1)",[{parts,
                                                                                                                                                                                  2}]))),
    <<"aB">> = iolist_to_binary(join(re:split("aB","(?i:([^b]))(?1)",[]))),
    <<"Ba">> = iolist_to_binary(join(re:split("Ba","(?i:([^b]))(?1)",[trim]))),
    <<"Ba">> = iolist_to_binary(join(re:split("Ba","(?i:([^b]))(?1)",[{parts,
                                                                                                                                                                                  2}]))),
    <<"Ba">> = iolist_to_binary(join(re:split("Ba","(?i:([^b]))(?1)",[]))),
    <<"ba">> = iolist_to_binary(join(re:split("ba","(?i:([^b]))(?1)",[trim]))),
    <<"ba">> = iolist_to_binary(join(re:split("ba","(?i:([^b]))(?1)",[{parts,
                                                                                                                                                                                  2}]))),
    <<"ba">> = iolist_to_binary(join(re:split("ba","(?i:([^b]))(?1)",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaaaaX","^(?&t)*+(?(DEFINE)(?<t>a))\\w$",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("aaaaaaX","^(?&t)*+(?(DEFINE)(?<t>a))\\w$",[{parts,
                                                                                                                                                                                                                            2}]))),
    <<"::">> = iolist_to_binary(join(re:split("aaaaaaX","^(?&t)*+(?(DEFINE)(?<t>a))\\w$",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?&t)*+(?(DEFINE)(?<t>a))\\w$",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?&t)*+(?(DEFINE)(?<t>a))\\w$",[{parts,
                                                                                                                                                                                                                                  2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?&t)*+(?(DEFINE)(?<t>a))\\w$",[]))),
    <<"aaaaaa">> = iolist_to_binary(join(re:split("aaaaaa","^(?&t)*+(?(DEFINE)(?<t>a))\\w$",[trim]))),
    <<"aaaaaa">> = iolist_to_binary(join(re:split("aaaaaa","^(?&t)*+(?(DEFINE)(?<t>a))\\w$",[{parts,
                                                                                                                                                                                                                          2}]))),
    <<"aaaaaa">> = iolist_to_binary(join(re:split("aaaaaa","^(?&t)*+(?(DEFINE)(?<t>a))\\w$",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaaaaX","^(?&t)*(?(DEFINE)(?<t>a))\\w$",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("aaaaaaX","^(?&t)*(?(DEFINE)(?<t>a))\\w$",[{parts,
                                                                                                                                                                                                                          2}]))),
    <<"::">> = iolist_to_binary(join(re:split("aaaaaaX","^(?&t)*(?(DEFINE)(?<t>a))\\w$",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaaaa","^(?&t)*(?(DEFINE)(?<t>a))\\w$",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("aaaaaa","^(?&t)*(?(DEFINE)(?<t>a))\\w$",[{parts,
                                                                                                                                                                                                                        2}]))),
    <<"::">> = iolist_to_binary(join(re:split("aaaaaa","^(?&t)*(?(DEFINE)(?<t>a))\\w$",[]))),
    <<":a:X">> = iolist_to_binary(join(re:split("aaaaX","^(a)*+(\\w)",[trim]))),
    <<":a:X:">> = iolist_to_binary(join(re:split("aaaaX","^(a)*+(\\w)",[{parts,
                                                                                                                                                                                 2}]))),
    <<":a:X:">> = iolist_to_binary(join(re:split("aaaaX","^(a)*+(\\w)",[]))),
    <<"::Y:Z">> = iolist_to_binary(join(re:split("YZ","^(a)*+(\\w)",[trim]))),
    <<"::Y:Z">> = iolist_to_binary(join(re:split("YZ","^(a)*+(\\w)",[{parts,
                                                                                                                                                                           2}]))),
    <<"::Y:Z">> = iolist_to_binary(join(re:split("YZ","^(a)*+(\\w)",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(a)*+(\\w)",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(a)*+(\\w)",[{parts,
                                                                                                                                                                                           2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(a)*+(\\w)",[]))),
    <<"aaaa">> = iolist_to_binary(join(re:split("aaaa","^(a)*+(\\w)",[trim]))),
    <<"aaaa">> = iolist_to_binary(join(re:split("aaaa","^(a)*+(\\w)",[{parts,
                                                                                                                                                                               2}]))),
    <<"aaaa">> = iolist_to_binary(join(re:split("aaaa","^(a)*+(\\w)",[]))),
    <<":X">> = iolist_to_binary(join(re:split("aaaaX","^(?:a)*+(\\w)",[trim]))),
    <<":X:">> = iolist_to_binary(join(re:split("aaaaX","^(?:a)*+(\\w)",[{parts,
                                                                                                                                                                                     2}]))),
    <<":X:">> = iolist_to_binary(join(re:split("aaaaX","^(?:a)*+(\\w)",[]))),
    <<":Y:Z">> = iolist_to_binary(join(re:split("YZ","^(?:a)*+(\\w)",[trim]))),
    <<":Y:Z">> = iolist_to_binary(join(re:split("YZ","^(?:a)*+(\\w)",[{parts,
                                                                                                                                                                               2}]))),
    <<":Y:Z">> = iolist_to_binary(join(re:split("YZ","^(?:a)*+(\\w)",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?:a)*+(\\w)",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?:a)*+(\\w)",[{parts,
                                                                                                                                                                                               2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?:a)*+(\\w)",[]))),
    <<"aaaa">> = iolist_to_binary(join(re:split("aaaa","^(?:a)*+(\\w)",[trim]))),
    <<"aaaa">> = iolist_to_binary(join(re:split("aaaa","^(?:a)*+(\\w)",[{parts,
                                                                                                                                                                                   2}]))),
    <<"aaaa">> = iolist_to_binary(join(re:split("aaaa","^(?:a)*+(\\w)",[]))),
    <<":a:X">> = iolist_to_binary(join(re:split("aaaaX","^(a)++(\\w)",[trim]))),
    <<":a:X:">> = iolist_to_binary(join(re:split("aaaaX","^(a)++(\\w)",[{parts,
                                                                                                                                                                                 2}]))),
    <<":a:X:">> = iolist_to_binary(join(re:split("aaaaX","^(a)++(\\w)",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(a)++(\\w)",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(a)++(\\w)",[{parts,
                                                                                                                                                                                           2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(a)++(\\w)",[]))),
    <<"aaaa">> = iolist_to_binary(join(re:split("aaaa","^(a)++(\\w)",[trim]))),
    <<"aaaa">> = iolist_to_binary(join(re:split("aaaa","^(a)++(\\w)",[{parts,
                                                                                                                                                                               2}]))),
    <<"aaaa">> = iolist_to_binary(join(re:split("aaaa","^(a)++(\\w)",[]))),
    <<"YZ">> = iolist_to_binary(join(re:split("YZ","^(a)++(\\w)",[trim]))),
    <<"YZ">> = iolist_to_binary(join(re:split("YZ","^(a)++(\\w)",[{parts,
                                                                                                                                                                           2}]))),
    <<"YZ">> = iolist_to_binary(join(re:split("YZ","^(a)++(\\w)",[]))),
    <<":X">> = iolist_to_binary(join(re:split("aaaaX","^(?:a)++(\\w)",[trim]))),
    <<":X:">> = iolist_to_binary(join(re:split("aaaaX","^(?:a)++(\\w)",[{parts,
                                                                                                                                                                                     2}]))),
    <<":X:">> = iolist_to_binary(join(re:split("aaaaX","^(?:a)++(\\w)",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?:a)++(\\w)",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?:a)++(\\w)",[{parts,
                                                                                                                                                                                               2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?:a)++(\\w)",[]))),
    <<"aaaa">> = iolist_to_binary(join(re:split("aaaa","^(?:a)++(\\w)",[trim]))),
    <<"aaaa">> = iolist_to_binary(join(re:split("aaaa","^(?:a)++(\\w)",[{parts,
                                                                                                                                                                                   2}]))),
    <<"aaaa">> = iolist_to_binary(join(re:split("aaaa","^(?:a)++(\\w)",[]))),
    <<"YZ">> = iolist_to_binary(join(re:split("YZ","^(?:a)++(\\w)",[trim]))),
    <<"YZ">> = iolist_to_binary(join(re:split("YZ","^(?:a)++(\\w)",[{parts,
                                                                                                                                                                               2}]))),
    <<"YZ">> = iolist_to_binary(join(re:split("YZ","^(?:a)++(\\w)",[]))),
    <<":a:a:aaX">> = iolist_to_binary(join(re:split("aaaaX","^(a)?+(\\w)",[trim]))),
    <<":a:a:aaX">> = iolist_to_binary(join(re:split("aaaaX","^(a)?+(\\w)",[{parts,
                                                                                                                                                                                 2}]))),
    <<":a:a:aaX">> = iolist_to_binary(join(re:split("aaaaX","^(a)?+(\\w)",[]))),
    <<"::Y:Z">> = iolist_to_binary(join(re:split("YZ","^(a)?+(\\w)",[trim]))),
    <<"::Y:Z">> = iolist_to_binary(join(re:split("YZ","^(a)?+(\\w)",[{parts,
                                                                                                                                                                           2}]))),
    <<"::Y:Z">> = iolist_to_binary(join(re:split("YZ","^(a)?+(\\w)",[]))),
    <<":a:aaX">> = iolist_to_binary(join(re:split("aaaaX","^(?:a)?+(\\w)",[trim]))),
    <<":a:aaX">> = iolist_to_binary(join(re:split("aaaaX","^(?:a)?+(\\w)",[{parts,
                                                                                                                                                                                     2}]))),
    <<":a:aaX">> = iolist_to_binary(join(re:split("aaaaX","^(?:a)?+(\\w)",[]))),
    <<":Y:Z">> = iolist_to_binary(join(re:split("YZ","^(?:a)?+(\\w)",[trim]))),
    <<":Y:Z">> = iolist_to_binary(join(re:split("YZ","^(?:a)?+(\\w)",[{parts,
                                                                                                                                                                               2}]))),
    <<":Y:Z">> = iolist_to_binary(join(re:split("YZ","^(?:a)?+(\\w)",[]))),
    <<":a:X">> = iolist_to_binary(join(re:split("aaaaX","^(a){2,}+(\\w)",[trim]))),
    <<":a:X:">> = iolist_to_binary(join(re:split("aaaaX","^(a){2,}+(\\w)",[{parts,
                                                                                                                                                                                       2}]))),
    <<":a:X:">> = iolist_to_binary(join(re:split("aaaaX","^(a){2,}+(\\w)",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(a){2,}+(\\w)",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(a){2,}+(\\w)",[{parts,
                                                                                                                                                                                                 2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(a){2,}+(\\w)",[]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","^(a){2,}+(\\w)",[trim]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","^(a){2,}+(\\w)",[{parts,
                                                                                                                                                                                   2}]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","^(a){2,}+(\\w)",[]))),
    <<"YZ">> = iolist_to_binary(join(re:split("YZ","^(a){2,}+(\\w)",[trim]))),
    <<"YZ">> = iolist_to_binary(join(re:split("YZ","^(a){2,}+(\\w)",[{parts,
                                                                                                                                                                                 2}]))),
    <<"YZ">> = iolist_to_binary(join(re:split("YZ","^(a){2,}+(\\w)",[]))),
    <<":X">> = iolist_to_binary(join(re:split("aaaaX","^(?:a){2,}+(\\w)",[trim]))),
    <<":X:">> = iolist_to_binary(join(re:split("aaaaX","^(?:a){2,}+(\\w)",[{parts,
                                                                                                                                                                                           2}]))),
    <<":X:">> = iolist_to_binary(join(re:split("aaaaX","^(?:a){2,}+(\\w)",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?:a){2,}+(\\w)",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?:a){2,}+(\\w)",[{parts,
                                                                                                                                                                                                     2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","^(?:a){2,}+(\\w)",[]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","^(?:a){2,}+(\\w)",[trim]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","^(?:a){2,}+(\\w)",[{parts,
                                                                                                                                                                                       2}]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","^(?:a){2,}+(\\w)",[]))),
    <<"YZ">> = iolist_to_binary(join(re:split("YZ","^(?:a){2,}+(\\w)",[trim]))),
    <<"YZ">> = iolist_to_binary(join(re:split("YZ","^(?:a){2,}+(\\w)",[{parts,
                                                                                                                                                                                     2}]))),
    <<"YZ">> = iolist_to_binary(join(re:split("YZ","^(?:a){2,}+(\\w)",[]))),
    <<"">> = iolist_to_binary(join(re:split("b","(a|)*(?1)b",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("b","(a|)*(?1)b",[{parts,
                                                                                                                                                                      2}]))),
    <<"::">> = iolist_to_binary(join(re:split("b","(a|)*(?1)b",[]))),
    <<"">> = iolist_to_binary(join(re:split("ab","(a|)*(?1)b",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("ab","(a|)*(?1)b",[{parts,
                                                                                                                                                                        2}]))),
    <<"::">> = iolist_to_binary(join(re:split("ab","(a|)*(?1)b",[]))),
    <<"">> = iolist_to_binary(join(re:split("aab","(a|)*(?1)b",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("aab","(a|)*(?1)b",[{parts,
                                                                                                                                                                          2}]))),
    <<"::">> = iolist_to_binary(join(re:split("aab","(a|)*(?1)b",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(a)++(?1)b",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(a)++(?1)b",[{parts,
                                                                                                                                                                                        2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(a)++(?1)b",[]))),
    <<"ab">> = iolist_to_binary(join(re:split("ab","(a)++(?1)b",[trim]))),
    <<"ab">> = iolist_to_binary(join(re:split("ab","(a)++(?1)b",[{parts,
                                                                                                                                                                        2}]))),
    <<"ab">> = iolist_to_binary(join(re:split("ab","(a)++(?1)b",[]))),
    <<"aab">> = iolist_to_binary(join(re:split("aab","(a)++(?1)b",[trim]))),
    <<"aab">> = iolist_to_binary(join(re:split("aab","(a)++(?1)b",[{parts,
                                                                                                                                                                          2}]))),
    <<"aab">> = iolist_to_binary(join(re:split("aab","(a)++(?1)b",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(a)*+(?1)b",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(a)*+(?1)b",[{parts,
                                                                                                                                                                                        2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(a)*+(?1)b",[]))),
    <<"ab">> = iolist_to_binary(join(re:split("ab","(a)*+(?1)b",[trim]))),
    <<"ab">> = iolist_to_binary(join(re:split("ab","(a)*+(?1)b",[{parts,
                                                                                                                                                                        2}]))),
    <<"ab">> = iolist_to_binary(join(re:split("ab","(a)*+(?1)b",[]))),
    <<"aab">> = iolist_to_binary(join(re:split("aab","(a)*+(?1)b",[trim]))),
    <<"aab">> = iolist_to_binary(join(re:split("aab","(a)*+(?1)b",[{parts,
                                                                                                                                                                          2}]))),
    <<"aab">> = iolist_to_binary(join(re:split("aab","(a)*+(?1)b",[]))),
    <<"">> = iolist_to_binary(join(re:split("b","(?1)(?:(b)){0}",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("b","(?1)(?:(b)){0}",[{parts,
                                                                                                                                                                              2}]))),
    <<"::">> = iolist_to_binary(join(re:split("b","(?1)(?:(b)){0}",[]))),
    <<":foo(bar(baz)+baz(bop)):(bar(baz)+baz(bop)):bar(baz)+baz(bop)">> = iolist_to_binary(join(re:split("foo(bar(baz)+baz(bop))","(foo ( \\( ((?:(?> [^()]+ )|(?2))*) \\) ) )",[extended,
                                                                                                                                                                                                                                                                                  trim]))),
    <<":foo(bar(baz)+baz(bop)):(bar(baz)+baz(bop)):bar(baz)+baz(bop):">> = iolist_to_binary(join(re:split("foo(bar(baz)+baz(bop))","(foo ( \\( ((?:(?> [^()]+ )|(?2))*) \\) ) )",[extended,
                                                                                                                                                                                                                                                                                    {parts,
                                                                                                                                                                                                                                                                                     2}]))),
    <<":foo(bar(baz)+baz(bop)):(bar(baz)+baz(bop)):bar(baz)+baz(bop):">> = iolist_to_binary(join(re:split("foo(bar(baz)+baz(bop))","(foo ( \\( ((?:(?> [^()]+ )|(?2))*) \\) ) )",[extended]))),
    <<":AB:B">> = iolist_to_binary(join(re:split("AB","(A (A|B(*ACCEPT)|C) D)(E)",[extended,
                                                                                                                                                                                                    trim]))),
    <<":AB:B::">> = iolist_to_binary(join(re:split("AB","(A (A|B(*ACCEPT)|C) D)(E)",[extended,
                                                                                                                                                                                                      {parts,
                                                                                                                                                                                                       2}]))),
    <<":AB:B::">> = iolist_to_binary(join(re:split("AB","(A (A|B(*ACCEPT)|C) D)(E)",[extended]))),
    ok.
run46() ->
    <<":a">> = iolist_to_binary(join(re:split("ba","\\A.*?(a|bc)",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("ba","\\A.*?(a|bc)",[{parts,
                                                                                                                                                                             2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("ba","\\A.*?(a|bc)",[]))),
    <<"">> = iolist_to_binary(join(re:split("ba","\\A.*?(?:a|bc)++",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("ba","\\A.*?(?:a|bc)++",[{parts,
                                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("ba","\\A.*?(?:a|bc)++",[]))),
    <<":a">> = iolist_to_binary(join(re:split("ba","\\A.*?(a|bc)++",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("ba","\\A.*?(a|bc)++",[{parts,
                                                                                                                                                                                 2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("ba","\\A.*?(a|bc)++",[]))),
    <<"">> = iolist_to_binary(join(re:split("ba","\\A.*?(?:a|bc|d)",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("ba","\\A.*?(?:a|bc|d)",[{parts,
                                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("ba","\\A.*?(?:a|bc|d)",[]))),
    <<":b:eetle">> = iolist_to_binary(join(re:split("beetle","(?:(b))++",[trim]))),
    <<":b:eetle">> = iolist_to_binary(join(re:split("beetle","(?:(b))++",[{parts,
                                                                                                                                                                              2}]))),
    <<":b:eetle">> = iolist_to_binary(join(re:split("beetle","(?:(b))++",[]))),
    <<":a">> = iolist_to_binary(join(re:split("a","(?(?=(a(*ACCEPT)z))a)",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("a","(?(?=(a(*ACCEPT)z))a)",[{parts,
                                                                                                                                                                                            2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("a","(?(?=(a(*ACCEPT)z))a)",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aaaab","^(a)(?1)+ab",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaaab","^(a)(?1)+ab",[{parts,
                                                                                                                                                                                2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaaab","^(a)(?1)+ab",[]))),
    <<"aaaab">> = iolist_to_binary(join(re:split("aaaab","^(a)(?1)++ab",[trim]))),
    <<"aaaab">> = iolist_to_binary(join(re:split("aaaab","^(a)(?1)++ab",[{parts,
                                                                                                                                                                                  2}]))),
    <<"aaaab">> = iolist_to_binary(join(re:split("aaaab","^(a)(?1)++ab",[]))),
    <<"::ckgammon">> = iolist_to_binary(join(re:split("backgammon","(?(DEFINE)(a))?b(?1)",[trim]))),
    <<"::ckgammon">> = iolist_to_binary(join(re:split("backgammon","(?(DEFINE)(a))?b(?1)",[{parts,
                                                                                                                                                                                                            2}]))),
    <<"::ckgammon">> = iolist_to_binary(join(re:split("backgammon","(?(DEFINE)(a))?b(?1)",[]))),
    <<":
def">> = iolist_to_binary(join(re:split("abc
def","^\\N+",[trim]))),
    <<":
def">> = iolist_to_binary(join(re:split("abc
def","^\\N+",[{parts,2}]))),
    <<":
def">> = iolist_to_binary(join(re:split("abc
def","^\\N+",[]))),
    <<":
def">> = iolist_to_binary(join(re:split("abc
def","^\\N{1,}",[trim]))),
    <<":
def">> = iolist_to_binary(join(re:split("abc
def","^\\N{1,}",[{parts,2}]))),
    <<":
def">> = iolist_to_binary(join(re:split("abc
def","^\\N{1,}",[]))),
    <<":cde">> = iolist_to_binary(join(re:split("aaaabcde","(?(R)a+|(?R)b)",[trim]))),
    <<":cde">> = iolist_to_binary(join(re:split("aaaabcde","(?(R)a+|(?R)b)",[{parts,
                                                                                                                                                                                            2}]))),
    <<":cde">> = iolist_to_binary(join(re:split("aaaabcde","(?(R)a+|(?R)b)",[]))),
    <<":aaaa:cde">> = iolist_to_binary(join(re:split("aaaabcde","(?(R)a+|((?R))b)",[trim]))),
    <<":aaaa:cde">> = iolist_to_binary(join(re:split("aaaabcde","(?(R)a+|((?R))b)",[{parts,
                                                                                                                                                                                                2}]))),
    <<":aaaa:cde">> = iolist_to_binary(join(re:split("aaaabcde","(?(R)a+|((?R))b)",[]))),
    <<":aaaab:cde">> = iolist_to_binary(join(re:split("aaaabcde","((?(R)a+|(?1)b))",[trim]))),
    <<":aaaab:cde">> = iolist_to_binary(join(re:split("aaaabcde","((?(R)a+|(?1)b))",[{parts,
                                                                                                                                                                                                2}]))),
    <<":aaaab:cde">> = iolist_to_binary(join(re:split("aaaabcde","((?(R)a+|(?1)b))",[]))),
    <<":aaaab:cde">> = iolist_to_binary(join(re:split("aaaabcde","((?(R1)a+|(?1)b))",[trim]))),
    <<":aaaab:cde">> = iolist_to_binary(join(re:split("aaaabcde","((?(R1)a+|(?1)b))",[{parts,
                                                                                                                                                                                                  2}]))),
    <<":aaaab:cde">> = iolist_to_binary(join(re:split("aaaabcde","((?(R1)a+|(?1)b))",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aaa","((?(R)a|(?1)))*",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaa","((?(R)a|(?1)))*",[{parts,
                                                                                                                                                                                    2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaa","((?(R)a|(?1)))*",[]))),
    <<":a">> = iolist_to_binary(join(re:split("aaa","((?(R)a|(?1)))+",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaa","((?(R)a|(?1)))+",[{parts,
                                                                                                                                                                                    2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("aaa","((?(R)a|(?1)))+",[]))),
    <<"">> = iolist_to_binary(join(re:split("a","(?>(?&t)c|(?&t))(?(DEFINE)(?<t>a|b(*PRUNE)c))",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("a","(?>(?&t)c|(?&t))(?(DEFINE)(?<t>a|b(*PRUNE)c))",[{parts,
                                                                                                                                                                                                                                            2}]))),
    <<"::">> = iolist_to_binary(join(re:split("a","(?>(?&t)c|(?&t))(?(DEFINE)(?<t>a|b(*PRUNE)c))",[]))),
    <<"b">> = iolist_to_binary(join(re:split("ba","(?>(?&t)c|(?&t))(?(DEFINE)(?<t>a|b(*PRUNE)c))",[trim]))),
    <<"b::">> = iolist_to_binary(join(re:split("ba","(?>(?&t)c|(?&t))(?(DEFINE)(?<t>a|b(*PRUNE)c))",[{parts,
                                                                                                                                                                                                                                              2}]))),
    <<"b::">> = iolist_to_binary(join(re:split("ba","(?>(?&t)c|(?&t))(?(DEFINE)(?<t>a|b(*PRUNE)c))",[]))),
    <<"bb">> = iolist_to_binary(join(re:split("bba","(?>(?&t)c|(?&t))(?(DEFINE)(?<t>a|b(*PRUNE)c))",[trim]))),
    <<"bb::">> = iolist_to_binary(join(re:split("bba","(?>(?&t)c|(?&t))(?(DEFINE)(?<t>a|b(*PRUNE)c))",[{parts,
                                                                                                                                                                                                                                                2}]))),
    <<"bb::">> = iolist_to_binary(join(re:split("bba","(?>(?&t)c|(?&t))(?(DEFINE)(?<t>a|b(*PRUNE)c))",[]))),
    ok.
run47() ->
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? (a(*THEN)b) c",[extended,
                                                                                                                                                                                          trim]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? (a(*THEN)b) c",[extended,
                                                                                                                                                                                            {parts,
                                                                                                                                                                                             2}]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? (a(*THEN)b) c",[extended]))),
    <<":ab">> = iolist_to_binary(join(re:split("aabc","^.*? (a(*THEN)b|(*F)) c",[extended,
                                                                                                                                                                                                    trim]))),
    <<":ab:">> = iolist_to_binary(join(re:split("aabc","^.*? (a(*THEN)b|(*F)) c",[extended,
                                                                                                                                                                                                      {parts,
                                                                                                                                                                                                       2}]))),
    <<":ab:">> = iolist_to_binary(join(re:split("aabc","^.*? (a(*THEN)b|(*F)) c",[extended]))),
    <<":ab:ab">> = iolist_to_binary(join(re:split("aabc","^.*? ( (a(*THEN)b) | (*F) ) c",[extended,
                                                                                                                                                                                                                trim]))),
    <<":ab:ab:">> = iolist_to_binary(join(re:split("aabc","^.*? ( (a(*THEN)b) | (*F) ) c",[extended,
                                                                                                                                                                                                                  {parts,
                                                                                                                                                                                                                   2}]))),
    <<":ab:ab:">> = iolist_to_binary(join(re:split("aabc","^.*? ( (a(*THEN)b) | (*F) ) c",[extended]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? ( (a(*THEN)b) ) c",[extended,
                                                                                                                                                                                                  trim]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? ( (a(*THEN)b) ) c",[extended,
                                                                                                                                                                                                    {parts,
                                                                                                                                                                                                     2}]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? ( (a(*THEN)b) ) c",[extended]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? (?:a(*THEN)b) c",[extended,
                                                                                                                                                                                              trim]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? (?:a(*THEN)b) c",[extended,
                                                                                                                                                                                                {parts,
                                                                                                                                                                                                 2}]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? (?:a(*THEN)b) c",[extended]))),
    <<"">> = iolist_to_binary(join(re:split("aabc","^.*? (?:a(*THEN)b|(*F)) c",[extended,
                                                                                                                                                                                                        trim]))),
    <<":">> = iolist_to_binary(join(re:split("aabc","^.*? (?:a(*THEN)b|(*F)) c",[extended,
                                                                                                                                                                                                          {parts,
                                                                                                                                                                                                           2}]))),
    <<":">> = iolist_to_binary(join(re:split("aabc","^.*? (?:a(*THEN)b|(*F)) c",[extended]))),
    <<"">> = iolist_to_binary(join(re:split("aabc","^.*? (?: (?:a(*THEN)b) | (*F) ) c",[extended,
                                                                                                                                                                                                                        trim]))),
    <<":">> = iolist_to_binary(join(re:split("aabc","^.*? (?: (?:a(*THEN)b) | (*F) ) c",[extended,
                                                                                                                                                                                                                          {parts,
                                                                                                                                                                                                                           2}]))),
    <<":">> = iolist_to_binary(join(re:split("aabc","^.*? (?: (?:a(*THEN)b) | (*F) ) c",[extended]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? (?: (?:a(*THEN)b) ) c",[extended,
                                                                                                                                                                                                          trim]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? (?: (?:a(*THEN)b) ) c",[extended,
                                                                                                                                                                                                            {parts,
                                                                                                                                                                                                             2}]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? (?: (?:a(*THEN)b) ) c",[extended]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? (?>a(*THEN)b) c",[extended,
                                                                                                                                                                                              trim]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? (?>a(*THEN)b) c",[extended,
                                                                                                                                                                                                {parts,
                                                                                                                                                                                                 2}]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? (?>a(*THEN)b) c",[extended]))),
    <<"">> = iolist_to_binary(join(re:split("aabc","^.*? (?>a(*THEN)b|(*F)) c",[extended,
                                                                                                                                                                                                        trim]))),
    <<":">> = iolist_to_binary(join(re:split("aabc","^.*? (?>a(*THEN)b|(*F)) c",[extended,
                                                                                                                                                                                                          {parts,
                                                                                                                                                                                                           2}]))),
    <<":">> = iolist_to_binary(join(re:split("aabc","^.*? (?>a(*THEN)b|(*F)) c",[extended]))),
    <<"">> = iolist_to_binary(join(re:split("aabc","^.*? (?> (?>a(*THEN)b) | (*F) ) c",[extended,
                                                                                                                                                                                                                        trim]))),
    <<":">> = iolist_to_binary(join(re:split("aabc","^.*? (?> (?>a(*THEN)b) | (*F) ) c",[extended,
                                                                                                                                                                                                                          {parts,
                                                                                                                                                                                                                           2}]))),
    <<":">> = iolist_to_binary(join(re:split("aabc","^.*? (?> (?>a(*THEN)b) | (*F) ) c",[extended]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? (?> (?>a(*THEN)b) ) c",[extended,
                                                                                                                                                                                                          trim]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? (?> (?>a(*THEN)b) ) c",[extended,
                                                                                                                                                                                                            {parts,
                                                                                                                                                                                                             2}]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? (?> (?>a(*THEN)b) ) c",[extended]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? (a(*THEN)b)++ c",[extended,
                                                                                                                                                                                              trim]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? (a(*THEN)b)++ c",[extended,
                                                                                                                                                                                                {parts,
                                                                                                                                                                                                 2}]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? (a(*THEN)b)++ c",[extended]))),
    <<":ab">> = iolist_to_binary(join(re:split("aabc","^.*? (a(*THEN)b|(*F))++ c",[extended,
                                                                                                                                                                                                        trim]))),
    <<":ab:">> = iolist_to_binary(join(re:split("aabc","^.*? (a(*THEN)b|(*F))++ c",[extended,
                                                                                                                                                                                                          {parts,
                                                                                                                                                                                                           2}]))),
    <<":ab:">> = iolist_to_binary(join(re:split("aabc","^.*? (a(*THEN)b|(*F))++ c",[extended]))),
    <<":ab:ab">> = iolist_to_binary(join(re:split("aabc","^.*? ( (a(*THEN)b)++ | (*F) )++ c",[extended,
                                                                                                                                                                                                                        trim]))),
    <<":ab:ab:">> = iolist_to_binary(join(re:split("aabc","^.*? ( (a(*THEN)b)++ | (*F) )++ c",[extended,
                                                                                                                                                                                                                          {parts,
                                                                                                                                                                                                                           2}]))),
    <<":ab:ab:">> = iolist_to_binary(join(re:split("aabc","^.*? ( (a(*THEN)b)++ | (*F) )++ c",[extended]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? ( (a(*THEN)b)++ )++ c",[extended,
                                                                                                                                                                                                          trim]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? ( (a(*THEN)b)++ )++ c",[extended,
                                                                                                                                                                                                            {parts,
                                                                                                                                                                                                             2}]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? ( (a(*THEN)b)++ )++ c",[extended]))),
    ok.
run48() ->
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? (?:a(*THEN)b)++ c",[extended,
                                                                                                                                                                                                  trim]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? (?:a(*THEN)b)++ c",[extended,
                                                                                                                                                                                                    {parts,
                                                                                                                                                                                                     2}]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? (?:a(*THEN)b)++ c",[extended]))),
    <<"">> = iolist_to_binary(join(re:split("aabc","^.*? (?:a(*THEN)b|(*F))++ c",[extended,
                                                                                                                                                                                                            trim]))),
    <<":">> = iolist_to_binary(join(re:split("aabc","^.*? (?:a(*THEN)b|(*F))++ c",[extended,
                                                                                                                                                                                                              {parts,
                                                                                                                                                                                                               2}]))),
    <<":">> = iolist_to_binary(join(re:split("aabc","^.*? (?:a(*THEN)b|(*F))++ c",[extended]))),
    <<"">> = iolist_to_binary(join(re:split("aabc","^.*? (?: (?:a(*THEN)b)++ | (*F) )++ c",[extended,
                                                                                                                                                                                                                                trim]))),
    <<":">> = iolist_to_binary(join(re:split("aabc","^.*? (?: (?:a(*THEN)b)++ | (*F) )++ c",[extended,
                                                                                                                                                                                                                                  {parts,
                                                                                                                                                                                                                                   2}]))),
    <<":">> = iolist_to_binary(join(re:split("aabc","^.*? (?: (?:a(*THEN)b)++ | (*F) )++ c",[extended]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? (?: (?:a(*THEN)b)++ )++ c",[extended,
                                                                                                                                                                                                                  trim]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? (?: (?:a(*THEN)b)++ )++ c",[extended,
                                                                                                                                                                                                                    {parts,
                                                                                                                                                                                                                     2}]))),
    <<"aabc">> = iolist_to_binary(join(re:split("aabc","^.*? (?: (?:a(*THEN)b)++ )++ c",[extended]))),
    <<"">> = iolist_to_binary(join(re:split("ac","^(?(?=a(*THEN)b)ab|ac)",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("ac","^(?(?=a(*THEN)b)ab|ac)",[{parts,
                                                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("ac","^(?(?=a(*THEN)b)ab|ac)",[]))),
    <<"ba">> = iolist_to_binary(join(re:split("ba","^.*?(?(?=a)a|b(*THEN)c)",[trim]))),
    <<"ba">> = iolist_to_binary(join(re:split("ba","^.*?(?(?=a)a|b(*THEN)c)",[{parts,
                                                                                                                                                                                                  2}]))),
    <<"ba">> = iolist_to_binary(join(re:split("ba","^.*?(?(?=a)a|b(*THEN)c)",[]))),
    <<"">> = iolist_to_binary(join(re:split("ba","^.*?(?:(?(?=a)a|b(*THEN)c)|d)",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("ba","^.*?(?:(?(?=a)a|b(*THEN)c)|d)",[{parts,
                                                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("ba","^.*?(?:(?(?=a)a|b(*THEN)c)|d)",[]))),
    <<"ac">> = iolist_to_binary(join(re:split("ac","^.*?(?(?=a)a(*THEN)b|c)",[trim]))),
    <<"ac">> = iolist_to_binary(join(re:split("ac","^.*?(?(?=a)a(*THEN)b|c)",[{parts,
                                                                                                                                                                                                  2}]))),
    <<"ac">> = iolist_to_binary(join(re:split("ac","^.*?(?(?=a)a(*THEN)b|c)",[]))),
    <<":abc">> = iolist_to_binary(join(re:split("aabc","^.*(?=a(*THEN)b)",[trim]))),
    <<":abc">> = iolist_to_binary(join(re:split("aabc","^.*(?=a(*THEN)b)",[{parts,
                                                                                                                                                                                        2}]))),
    <<":abc">> = iolist_to_binary(join(re:split("aabc","^.*(?=a(*THEN)b)",[]))),
    <<"xa:d">> = iolist_to_binary(join(re:split("xacd","(?<=a(*ACCEPT)b)c",[trim]))),
    <<"xa:d">> = iolist_to_binary(join(re:split("xacd","(?<=a(*ACCEPT)b)c",[{parts,
                                                                                                                                                                                          2}]))),
    <<"xa:d">> = iolist_to_binary(join(re:split("xacd","(?<=a(*ACCEPT)b)c",[]))),
    <<"xa:a:d">> = iolist_to_binary(join(re:split("xacd","(?<=(a(*ACCEPT)b))c",[trim]))),
    <<"xa:a:d">> = iolist_to_binary(join(re:split("xacd","(?<=(a(*ACCEPT)b))c",[{parts,
                                                                                                                                                                                              2}]))),
    <<"xa:a:d">> = iolist_to_binary(join(re:split("xacd","(?<=(a(*ACCEPT)b))c",[]))),
    <<"xab:ab:d">> = iolist_to_binary(join(re:split("xabcd","(?<=(a(*COMMIT)b))c",[trim]))),
    <<"xab:ab:d">> = iolist_to_binary(join(re:split("xabcd","(?<=(a(*COMMIT)b))c",[{parts,
                                                                                                                                                                                                2}]))),
    <<"xab:ab:d">> = iolist_to_binary(join(re:split("xabcd","(?<=(a(*COMMIT)b))c",[]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<=(a(*COMMIT)b))c",[trim]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<=(a(*COMMIT)b))c",[{parts,
                                                                                                                                                                                                          2}]))),
    <<"** Failers">> = iolist_to_binary(join(re:split("** Failers","(?<=(a(*COMMIT)b))c",[]))),
    <<"xacd">> = iolist_to_binary(join(re:split("xacd","(?<=(a(*COMMIT)b))c",[trim]))),
    <<"xacd">> = iolist_to_binary(join(re:split("xacd","(?<=(a(*COMMIT)b))c",[{parts,
                                                                                                                                                                                              2}]))),
    <<"xacd">> = iolist_to_binary(join(re:split("xacd","(?<=(a(*COMMIT)b))c",[]))),
    <<"x:d">> = iolist_to_binary(join(re:split("xcd","(?<!a(*FAIL)b)c",[trim]))),
    <<"x:d">> = iolist_to_binary(join(re:split("xcd","(?<!a(*FAIL)b)c",[{parts,
                                                                                                                                                                                    2}]))),
    <<"x:d">> = iolist_to_binary(join(re:split("xcd","(?<!a(*FAIL)b)c",[]))),
    <<"a:d">> = iolist_to_binary(join(re:split("acd","(?<!a(*FAIL)b)c",[trim]))),
    <<"a:d">> = iolist_to_binary(join(re:split("acd","(?<!a(*FAIL)b)c",[{parts,
                                                                                                                                                                                    2}]))),
    <<"a:d">> = iolist_to_binary(join(re:split("acd","(?<!a(*FAIL)b)c",[]))),
    <<"xab:d">> = iolist_to_binary(join(re:split("xabcd","(?<=a(*PRUNE)b)c",[trim]))),
    <<"xab:d">> = iolist_to_binary(join(re:split("xabcd","(?<=a(*PRUNE)b)c",[{parts,
                                                                                                                                                                                          2}]))),
    <<"xab:d">> = iolist_to_binary(join(re:split("xabcd","(?<=a(*PRUNE)b)c",[]))),
    <<"xab:d">> = iolist_to_binary(join(re:split("xabcd","(?<=a(*SKIP)b)c",[trim]))),
    <<"xab:d">> = iolist_to_binary(join(re:split("xabcd","(?<=a(*SKIP)b)c",[{parts,
                                                                                                                                                                                        2}]))),
    <<"xab:d">> = iolist_to_binary(join(re:split("xabcd","(?<=a(*SKIP)b)c",[]))),
    <<"xab:d">> = iolist_to_binary(join(re:split("xabcd","(?<=a(*THEN)b)c",[trim]))),
    <<"xab:d">> = iolist_to_binary(join(re:split("xabcd","(?<=a(*THEN)b)c",[{parts,
                                                                                                                                                                                        2}]))),
    <<"xab:d">> = iolist_to_binary(join(re:split("xabcd","(?<=a(*THEN)b)c",[]))),
    ok.
run49() ->
    <<":a:d">> = iolist_to_binary(join(re:split("abcd","(a)(?2){2}(.)",[trim]))),
    <<":a:d:">> = iolist_to_binary(join(re:split("abcd","(a)(?2){2}(.)",[{parts,
                                                                                                                                                                                  2}]))),
    <<":a:d:">> = iolist_to_binary(join(re:split("abcd","(a)(?2){2}(.)",[]))),
    <<"hello world ">> = iolist_to_binary(join(re:split("hello world test","(another)?(\\1?)test",[trim]))),
    <<"hello world :::">> = iolist_to_binary(join(re:split("hello world test","(another)?(\\1?)test",[{parts,
                                                                                                                                                                                                                         2}]))),
    <<"hello world :::">> = iolist_to_binary(join(re:split("hello world test","(another)?(\\1?)test",[]))),
    <<"hello world test">> = iolist_to_binary(join(re:split("hello world test","(another)?(\\1+)test",[trim]))),
    <<"hello world test">> = iolist_to_binary(join(re:split("hello world test","(another)?(\\1+)test",[{parts,
                                                                                                                                                                                                                         2}]))),
    <<"hello world test">> = iolist_to_binary(join(re:split("hello world test","(another)?(\\1+)test",[]))),
    <<"">> = iolist_to_binary(join(re:split("aac","(a(*COMMIT)b){0}a(?1)|aac",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("aac","(a(*COMMIT)b){0}a(?1)|aac",[{parts,
                                                                                                                                                                                                        2}]))),
    <<"::">> = iolist_to_binary(join(re:split("aac","(a(*COMMIT)b){0}a(?1)|aac",[]))),
    <<"">> = iolist_to_binary(join(re:split("aac","((?:a?)*)*c",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("aac","((?:a?)*)*c",[{parts,
                                                                                                                                                                            2}]))),
    <<"::">> = iolist_to_binary(join(re:split("aac","((?:a?)*)*c",[]))),
    <<"">> = iolist_to_binary(join(re:split("aac","((?>a?)*)*c",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("aac","((?>a?)*)*c",[{parts,
                                                                                                                                                                            2}]))),
    <<"::">> = iolist_to_binary(join(re:split("aac","((?>a?)*)*c",[]))),
    <<"a">> = iolist_to_binary(join(re:split("aba","(?>.*?a)(?<=ba)",[trim]))),
    <<"a:">> = iolist_to_binary(join(re:split("aba","(?>.*?a)(?<=ba)",[{parts,
                                                                                                                                                                                    2}]))),
    <<"a:">> = iolist_to_binary(join(re:split("aba","(?>.*?a)(?<=ba)",[]))),
    <<"">> = iolist_to_binary(join(re:split("aba","(?:.*?a)(?<=ba)",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aba","(?:.*?a)(?<=ba)",[{parts,
                                                                                                                                                                                    2}]))),
    <<":">> = iolist_to_binary(join(re:split("aba","(?:.*?a)(?<=ba)",[]))),
    <<"a">> = iolist_to_binary(join(re:split("aab",".*?a(*PRUNE)b",[trim]))),
    <<"a:">> = iolist_to_binary(join(re:split("aab",".*?a(*PRUNE)b",[{parts,
                                                                                                                                                                                2}]))),
    <<"a:">> = iolist_to_binary(join(re:split("aab",".*?a(*PRUNE)b",[]))),
    <<"a">> = iolist_to_binary(join(re:split("aab",".*?a(*PRUNE)b",[dotall,
                                                                                                                                                                              trim]))),
    <<"a:">> = iolist_to_binary(join(re:split("aab",".*?a(*PRUNE)b",[dotall,
                                                                                                                                                                                {parts,
                                                                                                                                                                                 2}]))),
    <<"a:">> = iolist_to_binary(join(re:split("aab",".*?a(*PRUNE)b",[dotall]))),
    <<"aab">> = iolist_to_binary(join(re:split("aab","^a(*PRUNE)b",[dotall,
                                                                                                                                                                          trim]))),
    <<"aab">> = iolist_to_binary(join(re:split("aab","^a(*PRUNE)b",[dotall,
                                                                                                                                                                            {parts,
                                                                                                                                                                             2}]))),
    <<"aab">> = iolist_to_binary(join(re:split("aab","^a(*PRUNE)b",[dotall]))),
    <<"a">> = iolist_to_binary(join(re:split("aab",".*?a(*SKIP)b",[trim]))),
    <<"a:">> = iolist_to_binary(join(re:split("aab",".*?a(*SKIP)b",[{parts,
                                                                                                                                                                              2}]))),
    <<"a:">> = iolist_to_binary(join(re:split("aab",".*?a(*SKIP)b",[]))),
    <<"a">> = iolist_to_binary(join(re:split("aab","(?>.*?a)b",[dotall,
                                                                                                                                                                      trim]))),
    <<"a:">> = iolist_to_binary(join(re:split("aab","(?>.*?a)b",[dotall,
                                                                                                                                                                        {parts,
                                                                                                                                                                         2}]))),
    <<"a:">> = iolist_to_binary(join(re:split("aab","(?>.*?a)b",[dotall]))),
    ok.
run50() ->
    <<"a">> = iolist_to_binary(join(re:split("aab","(?>.*?a)b",[trim]))),
    <<"a:">> = iolist_to_binary(join(re:split("aab","(?>.*?a)b",[{parts,
                                                                                                                                                                        2}]))),
    <<"a:">> = iolist_to_binary(join(re:split("aab","(?>.*?a)b",[]))),
    <<"aab">> = iolist_to_binary(join(re:split("aab","(?>^a)b",[dotall,
                                                                                                                                                                  trim]))),
    <<"aab">> = iolist_to_binary(join(re:split("aab","(?>^a)b",[dotall,
                                                                                                                                                                    {parts,
                                                                                                                                                                     2}]))),
    <<"aab">> = iolist_to_binary(join(re:split("aab","(?>^a)b",[dotall]))),
    <<"alphabetabcd:abcd">> = iolist_to_binary(join(re:split("alphabetabcd","(?>.*?)(?<=(abcd)|(wxyz))",[trim]))),
    <<"alphabetabcd:abcd::">> = iolist_to_binary(join(re:split("alphabetabcd","(?>.*?)(?<=(abcd)|(wxyz))",[{parts,
                                                                                                                                                                                                                          2}]))),
    <<"alphabetabcd:abcd::">> = iolist_to_binary(join(re:split("alphabetabcd","(?>.*?)(?<=(abcd)|(wxyz))",[]))),
    <<"endingwxyz::wxyz">> = iolist_to_binary(join(re:split("endingwxyz","(?>.*?)(?<=(abcd)|(wxyz))",[trim]))),
    <<"endingwxyz::wxyz:">> = iolist_to_binary(join(re:split("endingwxyz","(?>.*?)(?<=(abcd)|(wxyz))",[{parts,
                                                                                                                                                                                                                      2}]))),
    <<"endingwxyz::wxyz:">> = iolist_to_binary(join(re:split("endingwxyz","(?>.*?)(?<=(abcd)|(wxyz))",[]))),
    <<":abcd">> = iolist_to_binary(join(re:split("alphabetabcd","(?>.*)(?<=(abcd)|(wxyz))",[trim]))),
    <<":abcd::">> = iolist_to_binary(join(re:split("alphabetabcd","(?>.*)(?<=(abcd)|(wxyz))",[{parts,
                                                                                                                                                                                                                        2}]))),
    <<":abcd::">> = iolist_to_binary(join(re:split("alphabetabcd","(?>.*)(?<=(abcd)|(wxyz))",[]))),
    <<"::wxyz">> = iolist_to_binary(join(re:split("endingwxyz","(?>.*)(?<=(abcd)|(wxyz))",[trim]))),
    <<"::wxyz:">> = iolist_to_binary(join(re:split("endingwxyz","(?>.*)(?<=(abcd)|(wxyz))",[{parts,
                                                                                                                                                                                                                    2}]))),
    <<"::wxyz:">> = iolist_to_binary(join(re:split("endingwxyz","(?>.*)(?<=(abcd)|(wxyz))",[]))),
    <<"abcdfooxyz">> = iolist_to_binary(join(re:split("abcdfooxyz","(?>.*)foo",[trim]))),
    <<"abcdfooxyz">> = iolist_to_binary(join(re:split("abcdfooxyz","(?>.*)foo",[{parts,
                                                                                                                                                                                      2}]))),
    <<"abcdfooxyz">> = iolist_to_binary(join(re:split("abcdfooxyz","(?>.*)foo",[]))),
    <<"abcd:xyz">> = iolist_to_binary(join(re:split("abcdfooxyz","(?>.*?)foo",[trim]))),
    <<"abcd:xyz">> = iolist_to_binary(join(re:split("abcdfooxyz","(?>.*?)foo",[{parts,
                                                                                                                                                                                        2}]))),
    <<"abcd:xyz">> = iolist_to_binary(join(re:split("abcdfooxyz","(?>.*?)foo",[]))),
    <<"">> = iolist_to_binary(join(re:split("ac","(?:(a(*PRUNE)b)){0}(?:(?1)|ac)",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("ac","(?:(a(*PRUNE)b)){0}(?:(?1)|ac)",[{parts,
                                                                                                                                                                                                                2}]))),
    <<"::">> = iolist_to_binary(join(re:split("ac","(?:(a(*PRUNE)b)){0}(?:(?1)|ac)",[]))),
    <<"">> = iolist_to_binary(join(re:split("ac","(?:(a(*SKIP)b)){0}(?:(?1)|ac)",[trim]))),
    <<"::">> = iolist_to_binary(join(re:split("ac","(?:(a(*SKIP)b)){0}(?:(?1)|ac)",[{parts,
                                                                                                                                                                                                              2}]))),
    <<"::">> = iolist_to_binary(join(re:split("ac","(?:(a(*SKIP)b)){0}(?:(?1)|ac)",[]))),
    <<"aa">> = iolist_to_binary(join(re:split("aa","(?<=(*SKIP)ac)a",[trim]))),
    <<"aa">> = iolist_to_binary(join(re:split("aa","(?<=(*SKIP)ac)a",[{parts,
                                                                                                                                                                                  2}]))),
    <<"aa">> = iolist_to_binary(join(re:split("aa","(?<=(*SKIP)ac)a",[]))),
    <<"aa">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*PRUNE)b|a+c",[trim]))),
    <<"aa:">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*PRUNE)b|a+c",[{parts,
                                                                                                                                                                                                  2}]))),
    <<"aa:">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*PRUNE)b|a+c",[]))),
    <<"aa">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*SKIP)(*PRUNE)b|a+c",[trim]))),
    <<"aa:">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*SKIP)(*PRUNE)b|a+c",[{parts,
                                                                                                                                                                                                                2}]))),
    <<"aa:">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*SKIP)(*PRUNE)b|a+c",[]))),
    <<"aa">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*SKIP:N)(*PRUNE)b|a+c",[trim]))),
    <<"aa:">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*SKIP:N)(*PRUNE)b|a+c",[{parts,
                                                                                                                                                                                                                    2}]))),
    <<"aa:">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*SKIP:N)(*PRUNE)b|a+c",[]))),
    <<"aa">> = iolist_to_binary(join(re:split("aaaaaac","aaaa(*:N)a(*SKIP:N)(*PRUNE)b|a+c",[trim]))),
    <<"aa:">> = iolist_to_binary(join(re:split("aaaaaac","aaaa(*:N)a(*SKIP:N)(*PRUNE)b|a+c",[{parts,
                                                                                                                                                                                                                              2}]))),
    <<"aa:">> = iolist_to_binary(join(re:split("aaaaaac","aaaa(*:N)a(*SKIP:N)(*PRUNE)b|a+c",[]))),
    <<"aa">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*THEN)(*PRUNE)b|a+c",[trim]))),
    <<"aa:">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*THEN)(*PRUNE)b|a+c",[{parts,
                                                                                                                                                                                                                2}]))),
    <<"aa:">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*THEN)(*PRUNE)b|a+c",[]))),
    ok.
run51() ->
    <<"aaaaa">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*SKIP)b|a+c",[trim]))),
    <<"aaaaa:">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*SKIP)b|a+c",[{parts,
                                                                                                                                                                                                2}]))),
    <<"aaaaa:">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*SKIP)b|a+c",[]))),
    <<"aaaaa">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*PRUNE)(*SKIP)b|a+c",[trim]))),
    <<"aaaaa:">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*PRUNE)(*SKIP)b|a+c",[{parts,
                                                                                                                                                                                                                2}]))),
    <<"aaaaa:">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*PRUNE)(*SKIP)b|a+c",[]))),
    <<"aaaaa">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*THEN)(*SKIP)b|a+c",[trim]))),
    <<"aaaaa:">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*THEN)(*SKIP)b|a+c",[{parts,
                                                                                                                                                                                                              2}]))),
    <<"aaaaa:">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*THEN)(*SKIP)b|a+c",[]))),
    <<"aaaaa">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*COMMIT)(*SKIP)b|a+c",[trim]))),
    <<"aaaaa:">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*COMMIT)(*SKIP)b|a+c",[{parts,
                                                                                                                                                                                                                  2}]))),
    <<"aaaaa:">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*COMMIT)(*SKIP)b|a+c",[]))),
    <<"aaaaaac">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*COMMIT)b|a+c",[trim]))),
    <<"aaaaaac">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*COMMIT)b|a+c",[{parts,
                                                                                                                                                                                                    2}]))),
    <<"aaaaaac">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*COMMIT)b|a+c",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*THEN)b|a+c",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*THEN)b|a+c",[{parts,
                                                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*THEN)b|a+c",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*SKIP)(*THEN)b|a+c",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*SKIP)(*THEN)b|a+c",[{parts,
                                                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*SKIP)(*THEN)b|a+c",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*PRUNE)(*THEN)b|a+c",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*PRUNE)(*THEN)b|a+c",[{parts,
                                                                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*PRUNE)(*THEN)b|a+c",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*COMMIT)(*THEN)b|a+c",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*COMMIT)(*THEN)b|a+c",[{parts,
                                                                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaaaac","aaaaa(*COMMIT)(*THEN)b|a+c",[]))),
    ok.
run52() ->
    <<"aaaaa">> = iolist_to_binary(join(re:split("aaaaaa","aaaaa(*:m)(*PRUNE:m)(*SKIP:m)m|a+",[trim]))),
    <<"aaaaa:">> = iolist_to_binary(join(re:split("aaaaaa","aaaaa(*:m)(*PRUNE:m)(*SKIP:m)m|a+",[{parts,
                                                                                                                                                                                                                              2}]))),
    <<"aaaaa:">> = iolist_to_binary(join(re:split("aaaaaa","aaaaa(*:m)(*PRUNE:m)(*SKIP:m)m|a+",[]))),
    <<"aaaaa">> = iolist_to_binary(join(re:split("aaaaaa","aaaaa(*:m)(*MARK:m)(*PRUNE)(*SKIP:m)m|a+",[trim]))),
    <<"aaaaa:">> = iolist_to_binary(join(re:split("aaaaaa","aaaaa(*:m)(*MARK:m)(*PRUNE)(*SKIP:m)m|a+",[{parts,
                                                                                                                                                                                                                                            2}]))),
    <<"aaaaa:">> = iolist_to_binary(join(re:split("aaaaaa","aaaaa(*:m)(*MARK:m)(*PRUNE)(*SKIP:m)m|a+",[]))),
    <<"aa">> = iolist_to_binary(join(re:split("aaaaaa","aaaaa(*:n)(*PRUNE:m)(*SKIP:m)m|a+",[trim]))),
    <<"aa:">> = iolist_to_binary(join(re:split("aaaaaa","aaaaa(*:n)(*PRUNE:m)(*SKIP:m)m|a+",[{parts,
                                                                                                                                                                                                                              2}]))),
    <<"aa:">> = iolist_to_binary(join(re:split("aaaaaa","aaaaa(*:n)(*PRUNE:m)(*SKIP:m)m|a+",[]))),
    <<"aaaaa">> = iolist_to_binary(join(re:split("aaaaaa","aaaaa(*:n)(*MARK:m)(*PRUNE)(*SKIP:m)m|a+",[trim]))),
    <<"aaaaa:">> = iolist_to_binary(join(re:split("aaaaaa","aaaaa(*:n)(*MARK:m)(*PRUNE)(*SKIP:m)m|a+",[{parts,
                                                                                                                                                                                                                                            2}]))),
    <<"aaaaa:">> = iolist_to_binary(join(re:split("aaaaaa","aaaaa(*:n)(*MARK:m)(*PRUNE)(*SKIP:m)m|a+",[]))),
    <<"aa">> = iolist_to_binary(join(re:split("aaaac","a(*MARK:A)aa(*PRUNE:A)a(*SKIP:A)b|a+c",[trim]))),
    <<"aa:">> = iolist_to_binary(join(re:split("aaaac","a(*MARK:A)aa(*PRUNE:A)a(*SKIP:A)b|a+c",[{parts,
                                                                                                                                                                                                                                    2}]))),
    <<"aa:">> = iolist_to_binary(join(re:split("aaaac","a(*MARK:A)aa(*PRUNE:A)a(*SKIP:A)b|a+c",[]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaaac","a(*MARK:A)aa(*MARK:A)a(*SKIP:A)b|a+c",[trim]))),
    <<"aaa:">> = iolist_to_binary(join(re:split("aaaac","a(*MARK:A)aa(*MARK:A)a(*SKIP:A)b|a+c",[{parts,
                                                                                                                                                                                                                                  2}]))),
    <<"aaa:">> = iolist_to_binary(join(re:split("aaaac","a(*MARK:A)aa(*MARK:A)a(*SKIP:A)b|a+c",[]))),
    <<"aa">> = iolist_to_binary(join(re:split("aaaac","aaa(*PRUNE:A)a(*SKIP:A)b|a+c",[trim]))),
    <<"aa:">> = iolist_to_binary(join(re:split("aaaac","aaa(*PRUNE:A)a(*SKIP:A)b|a+c",[{parts,
                                                                                                                                                                                                                  2}]))),
    <<"aa:">> = iolist_to_binary(join(re:split("aaaac","aaa(*PRUNE:A)a(*SKIP:A)b|a+c",[]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaaac","aaa(*MARK:A)a(*SKIP:A)b|a+c",[trim]))),
    <<"aaa:">> = iolist_to_binary(join(re:split("aaaac","aaa(*MARK:A)a(*SKIP:A)b|a+c",[{parts,
                                                                                                                                                                                                                2}]))),
    <<"aaa:">> = iolist_to_binary(join(re:split("aaaac","aaa(*MARK:A)a(*SKIP:A)b|a+c",[]))),
    <<":a">> = iolist_to_binary(join(re:split("ba",".?(a|b(*THEN)c)",[trim]))),
    <<":a:">> = iolist_to_binary(join(re:split("ba",".?(a|b(*THEN)c)",[{parts,
                                                                                                                                                                                  2}]))),
    <<":a:">> = iolist_to_binary(join(re:split("ba",".?(a|b(*THEN)c)",[]))),
    <<":ab">> = iolist_to_binary(join(re:split("abc","(a(*COMMIT)b)c|abd",[trim]))),
    <<":ab:">> = iolist_to_binary(join(re:split("abc","(a(*COMMIT)b)c|abd",[{parts,
                                                                                                                                                                                          2}]))),
    <<":ab:">> = iolist_to_binary(join(re:split("abc","(a(*COMMIT)b)c|abd",[]))),
    <<"abd">> = iolist_to_binary(join(re:split("abd","(a(*COMMIT)b)c|abd",[trim]))),
    <<"abd">> = iolist_to_binary(join(re:split("abd","(a(*COMMIT)b)c|abd",[{parts,
                                                                                                                                                                                          2}]))),
    <<"abd">> = iolist_to_binary(join(re:split("abd","(a(*COMMIT)b)c|abd",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc","(?=a(*COMMIT)b)abc|abd",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","(?=a(*COMMIT)b)abc|abd",[{parts,
                                                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","(?=a(*COMMIT)b)abc|abd",[]))),
    <<"">> = iolist_to_binary(join(re:split("abd","(?=a(*COMMIT)b)abc|abd",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abd","(?=a(*COMMIT)b)abc|abd",[{parts,
                                                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("abd","(?=a(*COMMIT)b)abc|abd",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc","(?>a(*COMMIT)b)c|abd",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","(?>a(*COMMIT)b)c|abd",[{parts,
                                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","(?>a(*COMMIT)b)c|abd",[]))),
    <<"">> = iolist_to_binary(join(re:split("abd","(?>a(*COMMIT)b)c|abd",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abd","(?>a(*COMMIT)b)c|abd",[{parts,
                                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("abd","(?>a(*COMMIT)b)c|abd",[]))),
    <<"abd">> = iolist_to_binary(join(re:split("abd","a(?=b(*COMMIT)c)[^d]|abd",[trim]))),
    <<"abd">> = iolist_to_binary(join(re:split("abd","a(?=b(*COMMIT)c)[^d]|abd",[{parts,
                                                                                                                                                                                                      2}]))),
    <<"abd">> = iolist_to_binary(join(re:split("abd","a(?=b(*COMMIT)c)[^d]|abd",[]))),
    <<":c">> = iolist_to_binary(join(re:split("abc","a(?=b(*COMMIT)c)[^d]|abd",[trim]))),
    <<":c">> = iolist_to_binary(join(re:split("abc","a(?=b(*COMMIT)c)[^d]|abd",[{parts,
                                                                                                                                                                                                      2}]))),
    <<":c">> = iolist_to_binary(join(re:split("abc","a(?=b(*COMMIT)c)[^d]|abd",[]))),
    <<"">> = iolist_to_binary(join(re:split("abd","a(?=bc).|abd",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abd","a(?=bc).|abd",[{parts,
                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("abd","a(?=bc).|abd",[]))),
    <<":c">> = iolist_to_binary(join(re:split("abc","a(?=bc).|abd",[trim]))),
    <<":c">> = iolist_to_binary(join(re:split("abc","a(?=bc).|abd",[{parts,
                                                                                                                                                                              2}]))),
    <<":c">> = iolist_to_binary(join(re:split("abc","a(?=bc).|abd",[]))),
    <<"abceabd">> = iolist_to_binary(join(re:split("abceabd","a(?>b(*COMMIT)c)d|abd",[trim]))),
    <<"abceabd">> = iolist_to_binary(join(re:split("abceabd","a(?>b(*COMMIT)c)d|abd",[{parts,
                                                                                                                                                                                                        2}]))),
    <<"abceabd">> = iolist_to_binary(join(re:split("abceabd","a(?>b(*COMMIT)c)d|abd",[]))),
    <<"abce">> = iolist_to_binary(join(re:split("abceabd","a(?>bc)d|abd",[trim]))),
    <<"abce:">> = iolist_to_binary(join(re:split("abceabd","a(?>bc)d|abd",[{parts,
                                                                                                                                                                                      2}]))),
    <<"abce:">> = iolist_to_binary(join(re:split("abceabd","a(?>bc)d|abd",[]))),
    <<"">> = iolist_to_binary(join(re:split("abd","(?>a(*COMMIT)b)c|abd",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abd","(?>a(*COMMIT)b)c|abd",[{parts,
                                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("abd","(?>a(*COMMIT)b)c|abd",[]))),
    <<"abd">> = iolist_to_binary(join(re:split("abd","(?>a(*COMMIT)c)d|abd",[trim]))),
    <<"abd">> = iolist_to_binary(join(re:split("abd","(?>a(*COMMIT)c)d|abd",[{parts,
                                                                                                                                                                                              2}]))),
    <<"abd">> = iolist_to_binary(join(re:split("abd","(?>a(*COMMIT)c)d|abd",[]))),
    <<"::c">> = iolist_to_binary(join(re:split("ac","((?=a(*COMMIT)b)ab|ac){0}(?:(?1)|a(c))",[trim]))),
    <<"::c:">> = iolist_to_binary(join(re:split("ac","((?=a(*COMMIT)b)ab|ac){0}(?:(?1)|a(c))",[{parts,
                                                                                                                                                                                                                                2}]))),
    <<"::c:">> = iolist_to_binary(join(re:split("ac","((?=a(*COMMIT)b)ab|ac){0}(?:(?1)|a(c))",[]))),
    ok.
run53() ->
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a)?(?(1)a|b)+$",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a)?(?(1)a|b)+$",[{parts,
                                                                                                                                                                                                       2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^(a)?(?(1)a|b)+$",[]))),
    <<"a">> = iolist_to_binary(join(re:split("a","^(a)?(?(1)a|b)+$",[trim]))),
    <<"a">> = iolist_to_binary(join(re:split("a","^(a)?(?(1)a|b)+$",[{parts,
                                                                                                                                                                                   2}]))),
    <<"a">> = iolist_to_binary(join(re:split("a","^(a)?(?(1)a|b)+$",[]))),
    <<"a">> = iolist_to_binary(join(re:split("ab","(?=a\\Kb)ab",[trim]))),
    <<"a:">> = iolist_to_binary(join(re:split("ab","(?=a\\Kb)ab",[{parts,
                                                                                                                                                                           2}]))),
    <<"a:">> = iolist_to_binary(join(re:split("ab","(?=a\\Kb)ab",[]))),
    <<"">> = iolist_to_binary(join(re:split("ac","(?!a\\Kb)ac",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("ac","(?!a\\Kb)ac",[{parts,
                                                                                                                                                                           2}]))),
    <<":">> = iolist_to_binary(join(re:split("ac","(?!a\\Kb)ac",[]))),
    <<"ab">> = iolist_to_binary(join(re:split("abcd","^abc(?<=b\\Kc)d",[trim]))),
    <<"ab:">> = iolist_to_binary(join(re:split("abcd","^abc(?<=b\\Kc)d",[{parts,
                                                                                                                                                                                       2}]))),
    <<"ab:">> = iolist_to_binary(join(re:split("abcd","^abc(?<=b\\Kc)d",[]))),
    <<"">> = iolist_to_binary(join(re:split("abcd","^abc(?<!b\\Kq)d",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abcd","^abc(?<!b\\Kq)d",[{parts,
                                                                                                                                                                                       2}]))),
    <<":">> = iolist_to_binary(join(re:split("abcd","^abc(?<!b\\Kq)d",[]))),
    <<":abcd">> = iolist_to_binary(join(re:split("abcd","^((abc|abcx)(*THEN)y|abcd)",[trim]))),
    <<":abcd::">> = iolist_to_binary(join(re:split("abcd","^((abc|abcx)(*THEN)y|abcd)",[{parts,
                                                                                                                                                                                                            2}]))),
    <<":abcd::">> = iolist_to_binary(join(re:split("abcd","^((abc|abcx)(*THEN)y|abcd)",[]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^((abc|abcx)(*THEN)y|abcd)",[trim]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^((abc|abcx)(*THEN)y|abcd)",[{parts,
                                                                                                                                                                                                                          2}]))),
    <<"*** Failers">> = iolist_to_binary(join(re:split("*** Failers","^((abc|abcx)(*THEN)y|abcd)",[]))),
    <<"abcxy">> = iolist_to_binary(join(re:split("abcxy","^((abc|abcx)(*THEN)y|abcd)",[trim]))),
    <<"abcxy">> = iolist_to_binary(join(re:split("abcxy","^((abc|abcx)(*THEN)y|abcd)",[{parts,
                                                                                                                                                                                                              2}]))),
    <<"abcxy">> = iolist_to_binary(join(re:split("abcxy","^((abc|abcx)(*THEN)y|abcd)",[]))),
    <<"yes">> = iolist_to_binary(join(re:split("yes","^((yes|no)(*THEN)(*F))?",[trim]))),
    <<"yes">> = iolist_to_binary(join(re:split("yes","^((yes|no)(*THEN)(*F))?",[{parts,
                                                                                                                                                                                                    2}]))),
    <<"yes">> = iolist_to_binary(join(re:split("yes","^((yes|no)(*THEN)(*F))?",[]))),
    <<"ac">> = iolist_to_binary(join(re:split("ac","(?=a(*COMMIT)b|ac)ac|ac",[trim]))),
    <<"ac">> = iolist_to_binary(join(re:split("ac","(?=a(*COMMIT)b|ac)ac|ac",[{parts,
                                                                                                                                                                                                  2}]))),
    <<"ac">> = iolist_to_binary(join(re:split("ac","(?=a(*COMMIT)b|ac)ac|ac",[]))),
    <<"ac">> = iolist_to_binary(join(re:split("ac","(?=a(*COMMIT)b|(ac)) ac | (a)c",[extended,
                                                                                                                                                                                                              trim]))),
    <<"ac">> = iolist_to_binary(join(re:split("ac","(?=a(*COMMIT)b|(ac)) ac | (a)c",[extended,
                                                                                                                                                                                                                {parts,
                                                                                                                                                                                                                 2}]))),
    <<"ac">> = iolist_to_binary(join(re:split("ac","(?=a(*COMMIT)b|(ac)) ac | (a)c",[extended]))),
    <<":n">> = iolist_to_binary(join(re:split("bnn","(?(?!b(*THEN)a)bn|bnn)",[trim]))),
    <<":n">> = iolist_to_binary(join(re:split("bnn","(?(?!b(*THEN)a)bn|bnn)",[{parts,
                                                                                                                                                                                                  2}]))),
    <<":n">> = iolist_to_binary(join(re:split("bnn","(?(?!b(*THEN)a)bn|bnn)",[]))),
    <<":n">> = iolist_to_binary(join(re:split("bnn","(?!b(*SKIP)a)bn|bnn",[trim]))),
    <<":n">> = iolist_to_binary(join(re:split("bnn","(?!b(*SKIP)a)bn|bnn",[{parts,
                                                                                                                                                                                            2}]))),
    <<":n">> = iolist_to_binary(join(re:split("bnn","(?!b(*SKIP)a)bn|bnn",[]))),
    <<":n">> = iolist_to_binary(join(re:split("bnn","(?(?!b(*SKIP)a)bn|bnn)",[trim]))),
    <<":n">> = iolist_to_binary(join(re:split("bnn","(?(?!b(*SKIP)a)bn|bnn)",[{parts,
                                                                                                                                                                                                  2}]))),
    <<":n">> = iolist_to_binary(join(re:split("bnn","(?(?!b(*SKIP)a)bn|bnn)",[]))),
    <<":n">> = iolist_to_binary(join(re:split("bnn","(?!b(*PRUNE)a)bn|bnn",[trim]))),
    <<":n">> = iolist_to_binary(join(re:split("bnn","(?!b(*PRUNE)a)bn|bnn",[{parts,
                                                                                                                                                                                              2}]))),
    <<":n">> = iolist_to_binary(join(re:split("bnn","(?!b(*PRUNE)a)bn|bnn",[]))),
    <<":n">> = iolist_to_binary(join(re:split("bnn","(?(?!b(*PRUNE)a)bn|bnn)",[trim]))),
    <<":n">> = iolist_to_binary(join(re:split("bnn","(?(?!b(*PRUNE)a)bn|bnn)",[{parts,
                                                                                                                                                                                                    2}]))),
    <<":n">> = iolist_to_binary(join(re:split("bnn","(?(?!b(*PRUNE)a)bn|bnn)",[]))),
    <<":n">> = iolist_to_binary(join(re:split("bnn","(?!b(*COMMIT)a)bn|bnn",[trim]))),
    <<":n">> = iolist_to_binary(join(re:split("bnn","(?!b(*COMMIT)a)bn|bnn",[{parts,
                                                                                                                                                                                                2}]))),
    <<":n">> = iolist_to_binary(join(re:split("bnn","(?!b(*COMMIT)a)bn|bnn",[]))),
    <<":n">> = iolist_to_binary(join(re:split("bnn","(?(?!b(*COMMIT)a)bn|bnn)",[trim]))),
    <<":n">> = iolist_to_binary(join(re:split("bnn","(?(?!b(*COMMIT)a)bn|bnn)",[{parts,
                                                                                                                                                                                                      2}]))),
    <<":n">> = iolist_to_binary(join(re:split("bnn","(?(?!b(*COMMIT)a)bn|bnn)",[]))),
    <<"bnn">> = iolist_to_binary(join(re:split("bnn","(?=b(*SKIP)a)bn|bnn",[trim]))),
    <<"bnn">> = iolist_to_binary(join(re:split("bnn","(?=b(*SKIP)a)bn|bnn",[{parts,
                                                                                                                                                                                            2}]))),
    <<"bnn">> = iolist_to_binary(join(re:split("bnn","(?=b(*SKIP)a)bn|bnn",[]))),
    <<"">> = iolist_to_binary(join(re:split("bnn","(?=b(*THEN)a)bn|bnn",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("bnn","(?=b(*THEN)a)bn|bnn",[{parts,
                                                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("bnn","(?=b(*THEN)a)bn|bnn",[]))),
    ok.
run54() ->
    <<":d">> = iolist_to_binary(join(re:split("acd","(?!a(*SKIP)b)..",[trim]))),
    <<":d">> = iolist_to_binary(join(re:split("acd","(?!a(*SKIP)b)..",[{parts,
                                                                                                                                                                                    2}]))),
    <<":d">> = iolist_to_binary(join(re:split("acd","(?!a(*SKIP)b)..",[]))),
    <<"ac">> = iolist_to_binary(join(re:split("ac","^(?(?!a(*SKIP)b))",[trim]))),
    <<"ac">> = iolist_to_binary(join(re:split("ac","^(?(?!a(*SKIP)b))",[{parts,
                                                                                                                                                                                      2}]))),
    <<"ac">> = iolist_to_binary(join(re:split("ac","^(?(?!a(*SKIP)b))",[]))),
    <<":d">> = iolist_to_binary(join(re:split("acd","^(?!a(*PRUNE)b)..",[trim]))),
    <<":d">> = iolist_to_binary(join(re:split("acd","^(?!a(*PRUNE)b)..",[{parts,
                                                                                                                                                                                        2}]))),
    <<":d">> = iolist_to_binary(join(re:split("acd","^(?!a(*PRUNE)b)..",[]))),
    <<":d">> = iolist_to_binary(join(re:split("acd","(?!a(*PRUNE)b)..",[trim]))),
    <<":d">> = iolist_to_binary(join(re:split("acd","(?!a(*PRUNE)b)..",[{parts,
                                                                                                                                                                                      2}]))),
    <<":d">> = iolist_to_binary(join(re:split("acd","(?!a(*PRUNE)b)..",[]))),
    <<"">> = iolist_to_binary(join(re:split("ba","\\A.*?(?:a|bc)",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("ba","\\A.*?(?:a|bc)",[{parts,
                                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("ba","\\A.*?(?:a|bc)",[]))),
    <<":CD">> = iolist_to_binary(join(re:split("CD","^(A(*THEN)B|C(*THEN)D)",[trim]))),
    <<":CD:">> = iolist_to_binary(join(re:split("CD","^(A(*THEN)B|C(*THEN)D)",[{parts,
                                                                                                                                                                                                2}]))),
    <<":CD:">> = iolist_to_binary(join(re:split("CD","^(A(*THEN)B|C(*THEN)D)",[]))),
    <<"">> = iolist_to_binary(join(re:split("1234","^\\d*\\w{4}",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("1234","^\\d*\\w{4}",[{parts,
                                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("1234","^\\d*\\w{4}",[]))),
    <<"123">> = iolist_to_binary(join(re:split("123","^\\d*\\w{4}",[trim]))),
    <<"123">> = iolist_to_binary(join(re:split("123","^\\d*\\w{4}",[{parts,
                                                                                                                                                                              2}]))),
    <<"123">> = iolist_to_binary(join(re:split("123","^\\d*\\w{4}",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaa","^[^b]*\\w{4}",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaa","^[^b]*\\w{4}",[{parts,
                                                                                                                                                                                 2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaa","^[^b]*\\w{4}",[]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","^[^b]*\\w{4}",[trim]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","^[^b]*\\w{4}",[{parts,
                                                                                                                                                                               2}]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","^[^b]*\\w{4}",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaa","^[^b]*\\w{4}",[caseless,
                                                                                                                                                                               trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaa","^[^b]*\\w{4}",[caseless,
                                                                                                                                                                                 {parts,
                                                                                                                                                                                  2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaa","^[^b]*\\w{4}",[caseless]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","^[^b]*\\w{4}",[caseless,
                                                                                                                                                                             trim]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","^[^b]*\\w{4}",[caseless,
                                                                                                                                                                               {parts,
                                                                                                                                                                                2}]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","^[^b]*\\w{4}",[caseless]))),
    <<"">> = iolist_to_binary(join(re:split("aaaa","^a*\\w{4}",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaa","^a*\\w{4}",[{parts,
                                                                                                                                                                           2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaa","^a*\\w{4}",[]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","^a*\\w{4}",[trim]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","^a*\\w{4}",[{parts,
                                                                                                                                                                         2}]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","^a*\\w{4}",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaa","^a*\\w{4}",[caseless,
                                                                                                                                                                         trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaa","^a*\\w{4}",[caseless,
                                                                                                                                                                           {parts,
                                                                                                                                                                            2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaa","^a*\\w{4}",[caseless]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","^a*\\w{4}",[caseless,
                                                                                                                                                                       trim]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","^a*\\w{4}",[caseless,
                                                                                                                                                                         {parts,
                                                                                                                                                                          2}]))),
    <<"aaa">> = iolist_to_binary(join(re:split("aaa","^a*\\w{4}",[caseless]))),
    <<":1:non-sp1:non-sp2">> = iolist_to_binary(join(re:split("1 IN SOA non-sp1 non-sp2(","^(\\d+)\\s+IN\\s+SOA\\s+(\\S+)\\s+(\\S+)\\s*\\(\\s*$",[trim]))),
    <<":1:non-sp1:non-sp2:">> = iolist_to_binary(join(re:split("1 IN SOA non-sp1 non-sp2(","^(\\d+)\\s+IN\\s+SOA\\s+(\\S+)\\s+(\\S+)\\s*\\(\\s*$",[{parts,
                                                                                                                                                                                                                                                                                                                     2}]))),
    <<":1:non-sp1:non-sp2:">> = iolist_to_binary(join(re:split("1 IN SOA non-sp1 non-sp2(","^(\\d+)\\s+IN\\s+SOA\\s+(\\S+)\\s+(\\S+)\\s*\\(\\s*$",[]))),
    <<"AZ">> = iolist_to_binary(join(re:split("AZ","^A\\xZ",[trim]))),
    <<"AZ">> = iolist_to_binary(join(re:split("AZ","^A\\xZ",[{parts,
                                                                                                                                                                   2}]))),
    <<"AZ">> = iolist_to_binary(join(re:split("AZ","^A\\xZ",[]))),
    <<"">> = iolist_to_binary(join(re:split("ASB","^A\\o{123}B",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("ASB","^A\\o{123}B",[{parts,
                                                                                                                                                                             2}]))),
    <<":">> = iolist_to_binary(join(re:split("ASB","^A\\o{123}B",[]))),
    <<"">> = iolist_to_binary(join(re:split("aaaab"," ^ a + + b $ ",[extended,
                                                                                                                                                                                   trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaab"," ^ a + + b $ ",[extended,
                                                                                                                                                                                     {parts,
                                                                                                                                                                                      2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaab"," ^ a + + b $ ",[extended]))),
    <<"">> = iolist_to_binary(join(re:split("aaaab"," ^ a + #comment
  + b $ ",[extended,trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaab"," ^ a + #comment
  + b $ ",[extended,{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaab"," ^ a + #comment
  + b $ ",[extended]))),
    <<"">> = iolist_to_binary(join(re:split("aaaab"," ^ a + #comment
  #comment
  + b $ ",[extended,trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaab"," ^ a + #comment
  #comment
  + b $ ",[extended,{parts,2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaab"," ^ a + #comment
  #comment
  + b $ ",[extended]))),
    ok.
run55() ->
    <<"">> = iolist_to_binary(join(re:split("aaaab"," ^ (?> a + ) b $ ",[extended,
                                                                                                                                                                                           trim]))),
    <<":">> = iolist_to_binary(join(re:split("aaaab"," ^ (?> a + ) b $ ",[extended,
                                                                                                                                                                                             {parts,
                                                                                                                                                                                              2}]))),
    <<":">> = iolist_to_binary(join(re:split("aaaab"," ^ (?> a + ) b $ ",[extended]))),
    <<":aaaa">> = iolist_to_binary(join(re:split("aaaab"," ^ ( a + ) + + \\w $ ",[extended,
                                                                                                                                                                                                    trim]))),
    <<":aaaa:">> = iolist_to_binary(join(re:split("aaaab"," ^ ( a + ) + + \\w $ ",[extended,
                                                                                                                                                                                                      {parts,
                                                                                                                                                                                                       2}]))),
    <<":aaaa:">> = iolist_to_binary(join(re:split("aaaab"," ^ ( a + ) + + \\w $ ",[extended]))),
    <<"acb">> = iolist_to_binary(join(re:split("acb","(?:x|(?:(xx|yy)+|x|x|x|x|x)|a|a|a)bc",[trim]))),
    <<"acb">> = iolist_to_binary(join(re:split("acb","(?:x|(?:(xx|yy)+|x|x|x|x|x)|a|a|a)bc",[{parts,
                                                                                                                                                                                                                              2}]))),
    <<"acb">> = iolist_to_binary(join(re:split("acb","(?:x|(?:(xx|yy)+|x|x|x|x|x)|a|a|a)bc",[]))),
    <<":\"NOT MATCHED">> = iolist_to_binary(join(re:split("NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED","\\A(?:[^\\\"]++|\\\"(?:[^\\\"]*+|\\\"\\\")*+\\\")++",[trim]))),
    <<":\"NOT MATCHED">> = iolist_to_binary(join(re:split("NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED","\\A(?:[^\\\"]++|\\\"(?:[^\\\"]*+|\\\"\\\")*+\\\")++",[{parts,
                                                                                                                                                                                                                                                                                                                                                                       2}]))),
    <<":\"NOT MATCHED">> = iolist_to_binary(join(re:split("NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED","\\A(?:[^\\\"]++|\\\"(?:[^\\\"]*+|\\\"\\\")*+\\\")++",[]))),
    <<":\"NOT MATCHED">> = iolist_to_binary(join(re:split("NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED","\\A(?:[^\\\"]++|\\\"(?:[^\\\"]++|\\\"\\\")*+\\\")++",[trim]))),
    <<":\"NOT MATCHED">> = iolist_to_binary(join(re:split("NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED","\\A(?:[^\\\"]++|\\\"(?:[^\\\"]++|\\\"\\\")*+\\\")++",[{parts,
                                                                                                                                                                                                                                                                                                                                                                       2}]))),
    <<":\"NOT MATCHED">> = iolist_to_binary(join(re:split("NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED","\\A(?:[^\\\"]++|\\\"(?:[^\\\"]++|\\\"\\\")*+\\\")++",[]))),
    <<":\"NOT MATCHED">> = iolist_to_binary(join(re:split("NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED","\\A(?:[^\\\"]++|\\\"(?:[^\\\"]++|\\\"\\\")++\\\")++",[trim]))),
    <<":\"NOT MATCHED">> = iolist_to_binary(join(re:split("NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED","\\A(?:[^\\\"]++|\\\"(?:[^\\\"]++|\\\"\\\")++\\\")++",[{parts,
                                                                                                                                                                                                                                                                                                                                                                       2}]))),
    <<":\"NOT MATCHED">> = iolist_to_binary(join(re:split("NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED","\\A(?:[^\\\"]++|\\\"(?:[^\\\"]++|\\\"\\\")++\\\")++",[]))),
    <<": AFTER ::\"NOT MATCHED">> = iolist_to_binary(join(re:split("NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED","\\A([^\\\"1]++|[\\\"2]([^\\\"3]*+|[\\\"4][\\\"5])*+[\\\"6])++",[trim]))),
    <<": AFTER ::\"NOT MATCHED">> = iolist_to_binary(join(re:split("NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED","\\A([^\\\"1]++|[\\\"2]([^\\\"3]*+|[\\\"4][\\\"5])*+[\\\"6])++",[{parts,
                                                                                                                                                                                                                                                                                                                                                                                           2}]))),
    <<": AFTER ::\"NOT MATCHED">> = iolist_to_binary(join(re:split("NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED","\\A([^\\\"1]++|[\\\"2]([^\\\"3]*+|[\\\"4][\\\"5])*+[\\\"6])++",[]))),
    <<":t test">> = iolist_to_binary(join(re:split("test test","^\\w+(?>\\s*)(?<=\\w)",[trim]))),
    <<":t test">> = iolist_to_binary(join(re:split("test test","^\\w+(?>\\s*)(?<=\\w)",[{parts,
                                                                                                                                                                                                               2}]))),
    <<":t test">> = iolist_to_binary(join(re:split("test test","^\\w+(?>\\s*)(?<=\\w)",[]))),
    <<":a">> = iolist_to_binary(join(re:split("acl","(?P<Name>a)?(?P<Name2>b)?(?(<Name>)c|d)*l",[trim]))),
    <<":a::">> = iolist_to_binary(join(re:split("acl","(?P<Name>a)?(?P<Name2>b)?(?(<Name>)c|d)*l",[{parts,
                                                                                                                                                                                                                                        2}]))),
    <<":a::">> = iolist_to_binary(join(re:split("acl","(?P<Name>a)?(?P<Name2>b)?(?(<Name>)c|d)*l",[]))),
    <<"::b">> = iolist_to_binary(join(re:split("bdl","(?P<Name>a)?(?P<Name2>b)?(?(<Name>)c|d)*l",[trim]))),
    <<"::b:">> = iolist_to_binary(join(re:split("bdl","(?P<Name>a)?(?P<Name2>b)?(?(<Name>)c|d)*l",[{parts,
                                                                                                                                                                                                                                        2}]))),
    <<"::b:">> = iolist_to_binary(join(re:split("bdl","(?P<Name>a)?(?P<Name2>b)?(?(<Name>)c|d)*l",[]))),
    <<"a">> = iolist_to_binary(join(re:split("adl","(?P<Name>a)?(?P<Name2>b)?(?(<Name>)c|d)*l",[trim]))),
    <<"a:::">> = iolist_to_binary(join(re:split("adl","(?P<Name>a)?(?P<Name2>b)?(?(<Name>)c|d)*l",[{parts,
                                                                                                                                                                                                                                        2}]))),
    <<"a:::">> = iolist_to_binary(join(re:split("adl","(?P<Name>a)?(?P<Name2>b)?(?(<Name>)c|d)*l",[]))),
    <<"bc">> = iolist_to_binary(join(re:split("bcl","(?P<Name>a)?(?P<Name2>b)?(?(<Name>)c|d)*l",[trim]))),
    <<"bc:::">> = iolist_to_binary(join(re:split("bcl","(?P<Name>a)?(?P<Name2>b)?(?(<Name>)c|d)*l",[{parts,
                                                                                                                                                                                                                                        2}]))),
    <<"bc:::">> = iolist_to_binary(join(re:split("bcl","(?P<Name>a)?(?P<Name2>b)?(?(<Name>)c|d)*l",[]))),
    <<"">> = iolist_to_binary(join(re:split("abc","\\sabc",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("abc","\\sabc",[{parts,
                                                                                                                                                                     2}]))),
    <<":">> = iolist_to_binary(join(re:split("abc","\\sabc",[]))),
    <<"">> = iolist_to_binary(join(re:split("aa]]","[\\Qa]\\E]+",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aa]]","[\\Qa]\\E]+",[{parts,
                                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("aa]]","[\\Qa]\\E]+",[]))),
    <<"">> = iolist_to_binary(join(re:split("aa]]","[\\Q]a\\E]+",[trim]))),
    <<":">> = iolist_to_binary(join(re:split("aa]]","[\\Q]a\\E]+",[{parts,
                                                                                                                                                                                2}]))),
    <<":">> = iolist_to_binary(join(re:split("aa]]","[\\Q]a\\E]+",[]))),
    <<"1::::::2::::::3::::::4:abcd:abcd">> = iolist_to_binary(join(re:split("1234abcd","(?:((abcd))|(((?:(?:(?:(?:abc|(?:abcdef))))b)abcdefghi)abc)|((*ACCEPT)))",[trim]))),
    <<"1::::::234abcd">> = iolist_to_binary(join(re:split("1234abcd","(?:((abcd))|(((?:(?:(?:(?:abc|(?:abcdef))))b)abcdefghi)abc)|((*ACCEPT)))",[{parts,
                                                                                                                                                                                                                                                                                                                2}]))),
    <<"1::::::2::::::3::::::4:abcd:abcd::::">> = iolist_to_binary(join(re:split("1234abcd","(?:((abcd))|(((?:(?:(?:(?:abc|(?:abcdef))))b)abcdefghi)abc)|((*ACCEPT)))",[]))),
    ok.
run56() ->
    <<"b:a:c">> = iolist_to_binary(join(re:split("baaaaaaaaac","(?1)(?#?'){8}(a)",[trim]))),
    <<"b:a:c">> = iolist_to_binary(join(re:split("baaaaaaaaac","(?1)(?#?'){8}(a)",[{parts,
                                                                                                                                                                                                              2}]))),
    <<"b:a:c">> = iolist_to_binary(join(re:split("baaaaaaaaac","(?1)(?#?'){8}(a)",[]))),
    <<"a::b::c::d">> = iolist_to_binary(join(re:split("abcd","(?|(\\k'Pm')|(?'Pm'))",[trim]))),
    <<"a::bcd">> = iolist_to_binary(join(re:split("abcd","(?|(\\k'Pm')|(?'Pm'))",[{parts,
                                                                                                                                                                                                                                   2}]))),
    <<"a::b::c::d::">> = iolist_to_binary(join(re:split("abcd","(?|(\\k'Pm')|(?'Pm'))",[]))),
    <<"  :Fred:099">> = iolist_to_binary(join(re:split("  Fred:099","(?=.*[A-Z])(?=.*[a-z])(?=.*[0-9])(?=.*[,;:])(?=.{8,16})(?!.*[\\s])",[trim]))),
    <<"  :Fred:099">> = iolist_to_binary(join(re:split("  Fred:099","(?=.*[A-Z])(?=.*[a-z])(?=.*[0-9])(?=.*[,;:])(?=.{8,16})(?!.*[\\s])",[{parts,
                                                                                                                                                                                                                                                                                                         2}]))),
    <<"  :Fred:099">> = iolist_to_binary(join(re:split("  Fred:099","(?=.*[A-Z])(?=.*[a-z])(?=.*[0-9])(?=.*[,;:])(?=.{8,16})(?!.*[\\s])",[]))),
    <<"  ">> = iolist_to_binary(join(re:split("  X","(?=.*X)X$",[trim]))),
    <<"  :">> = iolist_to_binary(join(re:split("  X","(?=.*X)X$",[{parts,
                                                                                                                                                                         2}]))),
    <<"  :">> = iolist_to_binary(join(re:split("  X","(?=.*X)X$",[]))),
    <<">:::<">> = iolist_to_binary(join(re:split(">XXX<","X+(?#comment)?",[trim]))),
    <<">:XX<">> = iolist_to_binary(join(re:split(">XXX<","X+(?#comment)?",[{parts,
                                                                                                                                                                                      2}]))),
    <<">:::<">> = iolist_to_binary(join(re:split(">XXX<","X+(?#comment)?",[]))),
    <<":pokus">> = iolist_to_binary(join(re:split("pokus.","   (?<word> \\w+ )*    \\.   ",[extended,
                                                                                                                                                                                                                       caseless,
                                                                                                                                                                                                                       trim]))),
    <<":pokus:">> = iolist_to_binary(join(re:split("pokus.","   (?<word> \\w+ )*    \\.   ",[extended,
                                                                                                                                                                                                                         caseless,
                                                                                                                                                                                                                         {parts,
                                                                                                                                                                                                                          2}]))),
    <<":pokus:">> = iolist_to_binary(join(re:split("pokus.","   (?<word> \\w+ )*    \\.   ",[extended,
                                                                                                                                                                                                                          caseless]))),
    <<"">> = iolist_to_binary(join(re:split("pokus.","(?(DEFINE) (?<word> \\w+ ) ) (?&word)*   \\.",[extended,
                                                                                                                                                                                                                                                     caseless,
                                                                                                                                                                                                                                                     trim]))),
    <<"::">> = iolist_to_binary(join(re:split("pokus.","(?(DEFINE) (?<word> \\w+ ) ) (?&word)*   \\.",[extended,
                                                                                                                                                                                                                                                       caseless,
                                                                                                                                                                                                                                                       {parts,
                                                                                                                                                                                                                                                        2}]))),
    <<"::">> = iolist_to_binary(join(re:split("pokus.","(?(DEFINE) (?<word> \\w+ ) ) (?&word)*   \\.",[extended,
                                                                                                                                                                                                                                                        caseless]))),
    <<"::pokus">> = iolist_to_binary(join(re:split("pokus.","(?(DEFINE) (?<word> \\w+ ) ) ( (?&word)* )   \\.",[extended,
                                                                                                                                                                                                                                                             caseless,
                                                                                                                                                                                                                                                             trim]))),
    <<"::pokus:">> = iolist_to_binary(join(re:split("pokus.","(?(DEFINE) (?<word> \\w+ ) ) ( (?&word)* )   \\.",[extended,
                                                                                                                                                                                                                                                               caseless,
                                                                                                                                                                                                                                                               {parts,
                                                                                                                                                                                                                                                                2}]))),
    <<"::pokus:">> = iolist_to_binary(join(re:split("pokus.","(?(DEFINE) (?<word> \\w+ ) ) ( (?&word)* )   \\.",[extended,
                                                                                                                                                                                                                                                                caseless]))),
    <<"">> = iolist_to_binary(join(re:split("pokus.","(?&word)*  (?(DEFINE) (?<word> \\w+ ) )  \\.",[extended,
                                                                                                                                                                                                                                                     caseless,
                                                                                                                                                                                                                                                     trim]))),
    <<"::">> = iolist_to_binary(join(re:split("pokus.","(?&word)*  (?(DEFINE) (?<word> \\w+ ) )  \\.",[extended,
                                                                                                                                                                                                                                                       caseless,
                                                                                                                                                                                                                                                       {parts,
                                                                                                                                                                                                                                                        2}]))),
    <<"::">> = iolist_to_binary(join(re:split("pokus.","(?&word)*  (?(DEFINE) (?<word> \\w+ ) )  \\.",[extended,
                                                                                                                                                                                                                                                        caseless]))),
    <<":hokus">> = iolist_to_binary(join(re:split("pokus.hokus","(?&word)*  \\. (?<word> \\w+ )",[extended,
                                                                                                                                                                                                                                   caseless,
                                                                                                                                                                                                                                   trim]))),
    <<":hokus:">> = iolist_to_binary(join(re:split("pokus.hokus","(?&word)*  \\. (?<word> \\w+ )",[extended,
                                                                                                                                                                                                                                     caseless,
                                                                                                                                                                                                                                     {parts,
                                                                                                                                                                                                                                      2}]))),
    <<":hokus:">> = iolist_to_binary(join(re:split("pokus.hokus","(?&word)*  \\. (?<word> \\w+ )",[extended,
                                                                                                                                                                                                                                      caseless]))),
    ok.