5 files changed, 8 insertions, 5 deletions

diff --git a/lib/stdlib/doc/src/string.xml b/lib/stdlib/doc/src/string.xml
index c7772d63a3..4a3d37dcb6 100644
--- a/lib/stdlib/doc/src/string.xml
+++ b/lib/stdlib/doc/src/string.xml
@@ -641,7 +641,7 @@ ÖÄÅ</pre>
     <note><p>
       The functions are kept for backward compatibility, but are
       not recommended.
-      They will be deprecated in Erlang/OTP 21.
+      They will be deprecated in a future release.
     </p>
     <p>Any undocumented functions in <c>string</c> are not to be used.</p>
     </note>
diff --git a/lib/stdlib/src/erl_internal.erl b/lib/stdlib/src/erl_internal.erl
index 6d3d5baa23..dd509191ef 100644
--- a/lib/stdlib/src/erl_internal.erl
+++ b/lib/stdlib/src/erl_internal.erl
@@ -109,6 +109,7 @@ new_type_test(is_function, 2) -> true;
 new_type_test(is_integer, 1) -> true;
 new_type_test(is_list, 1) -> true;
 new_type_test(is_map, 1) -> true;
+new_type_test(is_map_key, 2) -> true;
 new_type_test(is_number, 1) -> true;
 new_type_test(is_pid, 1) -> true;
 new_type_test(is_port, 1) -> true;
@@ -315,6 +316,7 @@ bif(is_function, 2) -> true;
 bif(is_integer, 1) -> true;
 bif(is_list, 1) -> true;
 bif(is_map, 1) -> true;
+bif(is_map_key, 2) -> true;
 bif(is_number, 1) -> true;
 bif(is_pid, 1) -> true;
 bif(is_port, 1) -> true;
diff --git a/lib/stdlib/src/gen_event.erl b/lib/stdlib/src/gen_event.erl
index 53042251cc..3ee2031d02 100644
--- a/lib/stdlib/src/gen_event.erl
+++ b/lib/stdlib/src/gen_event.erl
@@ -122,7 +122,7 @@
 -type add_handler_ret()  :: ok | term() | {'EXIT',term()}.
 -type del_handler_ret()  :: ok | term() | {'EXIT',term()}.
 
--type emgr_name() :: {'local', atom()} | {'global', atom()}
+-type emgr_name() :: {'local', atom()} | {'global', term()}
                    | {'via', atom(), term()}.
 -type debug_flag() :: 'trace' | 'log' | 'statistics' | 'debug'
                     | {'logfile', string()}.
@@ -130,7 +130,7 @@
                 | {'debug', [debug_flag()]}
                 | {'spawn_opt', [proc_lib:spawn_option()]}
                 | {'hibernate_after', timeout()}.
--type emgr_ref()  :: atom() | {atom(), atom()} |  {'global', atom()}
+-type emgr_ref()  :: atom() | {atom(), atom()} |  {'global', term()}
                    | {'via', atom(), term()} | pid().
 -type start_ret() :: {'ok', pid()} | {'error', term()}.
 
@@ -146,7 +146,7 @@
 %% start_link()
 %% start_link(MgrName | Options)
 %% start_link(MgrName, Options)
-%%    MgrName ::= {local, atom()} | {global, atom()} | {via, atom(), term()}
+%%    MgrName ::= {local, atom()} | {global, term()} | {via, atom(), term()}
 %%    Options ::= [{timeout, Timeout} | {debug, [Flag]} | {spawn_opt,SOpts}]
 %%       Flag ::= trace | log | {logfile, File} | statistics | debug
 %%          (debug == log && statistics)
diff --git a/lib/stdlib/src/gen_server.erl b/lib/stdlib/src/gen_server.erl
index f65ef78636..035dd871ff 100644
--- a/lib/stdlib/src/gen_server.erl
+++ b/lib/stdlib/src/gen_server.erl
@@ -166,7 +166,7 @@
 %%% start(Name, Mod, Args, Options)
 %%% start_link(Mod, Args, Options)
 %%% start_link(Name, Mod, Args, Options) where:
-%%%    Name ::= {local, atom()} | {global, atom()} | {via, atom(), term()}
+%%%    Name ::= {local, atom()} | {global, term()} | {via, atom(), term()}
 %%%    Mod  ::= atom(), callback module implementing the 'real' server
 %%%    Args ::= term(), init arguments (to Mod:init/1)
 %%%    Options ::= [{timeout, Timeout} | {debug, [Flag]}]
diff --git a/lib/stdlib/src/ms_transform.erl b/lib/stdlib/src/ms_transform.erl
index ec8cfd56c2..428c23524b 100644
--- a/lib/stdlib/src/ms_transform.erl
+++ b/lib/stdlib/src/ms_transform.erl
@@ -929,6 +929,7 @@ bool_test(is_port,1) -> true;
 bool_test(is_reference,1) -> true;
 bool_test(is_tuple,1) -> true;
 bool_test(is_map,1) -> true;
+bool_test(is_map_key, 2) -> true;
 bool_test(is_binary,1) -> true;
 bool_test(is_function,1) -> true;
 bool_test(is_record,2) -> true;