Merge branch 'pan/unicode_printable_ranges'

* pan/unicode_printable_ranges:
  Adapt stdlib tests to ~tp detecting latin1 binaries
  Update primary bootstrap
  Make wx debugger use +pc flag when applicable
  Correct misspelled comments and space at lin ends
  Make ~tp output latin1 binaries as strings if possible
  Leave the +pc handling to io and io_lib_pretty
  Remove newly introduced warning in erlexec.c
  Make shell_SUITE:otp_10302 use +pc unicode when needed
  Fix io_proto_SUITE to handle the new io_lib_pretty:print
  Add testcase for +pc and io:printable_range/0
  Make printing of UTF-8 in binaries behave like lists.
  Document +pc flag and io:printable_range/0
  Add usage of and spec for io:printable_range/0
  Add +pc {latin1|unicode} switch and io:printable_range/0
  Fix some Unicode issues

OTP-18084

18 files changed, 311 insertions, 96 deletions

diff --git a/lib/debugger/src/dbg_wx_trace.erl b/lib/debugger/src/dbg_wx_trace.erl
index bd92cb4b42..eaea01822c 100644
--- a/lib/debugger/src/dbg_wx_trace.erl
+++ b/lib/debugger/src/dbg_wx_trace.erl
@@ -687,7 +687,7 @@ meta_cmd({trace_output, Str}, State) ->
 
 %% Reply on a user command
 meta_cmd({eval_rsp, Res}, State) ->
-    Str = io_lib:print(Res),
+    Str = io_lib_pretty:print(Res,[{encoding,unicode}]),
     dbg_wx_trace_win:eval_output(State#state.win, [$<,Str,10], normal),
     State.
 
diff --git a/lib/debugger/src/dbg_wx_trace_win.erl b/lib/debugger/src/dbg_wx_trace_win.erl
index 8b206ccd78..e54ce3913f 100644
--- a/lib/debugger/src/dbg_wx_trace_win.erl
+++ b/lib/debugger/src/dbg_wx_trace_win.erl
@@ -853,7 +853,7 @@ handle_event(#wx{id=?EVAL_ENTRY, event=#wxCommand{type=command_text_enter}},
 handle_event(#wx{event=#wxList{type=command_list_item_selected, itemIndex=Row}},Wi) ->
     Bs = get(bindings),
     {Var,Val} = lists:nth(Row+1, Bs),
-    Str = io_lib:format("< ~s = ~p~n", [Var, Val]),
+    Str = io_lib:format("< ~s = ~lp~n", [Var, Val]),
     eval_output(Wi, Str, bold),
     ignore;
 handle_event(#wx{event=#wxList{type=command_list_item_activated, itemIndex=Row}},_Wi) ->    
diff --git a/lib/debugger/src/dbg_wx_win.erl b/lib/debugger/src/dbg_wx_win.erl
index 3cb6edd953..eceacd7c88 100644
--- a/lib/debugger/src/dbg_wx_win.erl
+++ b/lib/debugger/src/dbg_wx_win.erl
@@ -254,7 +254,7 @@ notify(Win,Message) ->
 entry(Parent, Title, Prompt, {Type, Value}) ->
     Ted = wxTextEntryDialog:new(Parent, to_string(Prompt),
 				[{caption, to_string(Title)},
-				 {value, to_string("~999999tp",Value)}]),
+				 {value, to_string("~999999tp",[Value])}]),
 
     case wxDialog:showModal(Ted) of
 	?wxID_OK ->
diff --git a/lib/dialyzer/test/race_SUITE_data/results/extract_translations b/lib/dialyzer/test/race_SUITE_data/results/extract_translations
index 62aa1aa511..295404bfed 100644
--- a/lib/dialyzer/test/race_SUITE_data/results/extract_translations
+++ b/lib/dialyzer/test/race_SUITE_data/results/extract_translations
@@ -1,5 +1,5 @@
 
-extract_translations.erl:140: The call ets:insert('files',{atom() | binary() | [atom() | [any()] | char()]}) might have an unintended effect due to a possible race condition caused by its combination with the ets:lookup('files',File::atom() | binary() | [atom() | [any()] | char()]) call in extract_translations.erl on line 135
+extract_translations.erl:140: The call ets:insert('files',{atom() | [atom() | [any()] | char()]}) might have an unintended effect due to a possible race condition caused by its combination with the ets:lookup('files',File::atom() | [atom() | [any()] | char()]) call in extract_translations.erl on line 135
 extract_translations.erl:146: The call ets:insert('translations',{_,[]}) might have an unintended effect due to a possible race condition caused by its combination with the ets:lookup('translations',Str::any()) call in extract_translations.erl on line 126
-extract_translations.erl:152: The call ets:insert('files',{atom() | binary() | [atom() | [any()] | char()]}) might have an unintended effect due to a possible race condition caused by its combination with the ets:lookup('files',File::atom() | binary() | [atom() | [any()] | char()]) call in extract_translations.erl on line 148
+extract_translations.erl:152: The call ets:insert('files',{atom() | [atom() | [any()] | char()]}) might have an unintended effect due to a possible race condition caused by its combination with the ets:lookup('files',File::atom() | [atom() | [any()] | char()]) call in extract_translations.erl on line 148
 extract_translations.erl:154: The call ets:insert('translations',{_,[]}) might have an unintended effect due to a possible race condition caused by its combination with the ets:lookup('translations',Str::any()) call in extract_translations.erl on line 126
diff --git a/lib/stdlib/doc/src/io.xml b/lib/stdlib/doc/src/io.xml
index 63f814ad2e..90f24c4cbc 100644
--- a/lib/stdlib/doc/src/io.xml
+++ b/lib/stdlib/doc/src/io.xml
@@ -211,6 +211,18 @@
       </desc>
     </func>
     <func>
+      <name name="printable_range" arity="0"/>
+      <fsummary>Get user requested printable character range</fsummary>
+      <desc>
+	<p>Return the user requested range of printable Unicode characters.</p>
+	<p>The user can request a range of characters that are to be considered printable in heuristic detection of strings by the shell and by the formatting functions. This is done by supplying <c>+pc &lt;range&gt;</c> when starting Erlang.</p>
+	<p>Currently the only valid values for <c>&lt;range&gt;</c> are <c>latin1</c> and <c>unicode</c>. <c>latin1</c> means that only code points below 256 (with the exception of control characters etc) will be considered printable. <c>unicode</c> means that all printable characters in all unicode character ranges are considered printable by the io functions.</p>
+	<p>By default, Erlang is started so that only the <c>latin1</c> range of characters will indicate that a list of integers is a string.</p>
+	<p>The simplest way to utilize the setting is to call <seealso marker="io_lib#printable_list/1">io_lib:printable_list/1</seealso>, which will use the return value of this function to decide if a list is a string of printable characters or not.</p>
+	<note><p>In the future, this function may return more values and ranges. It is recommended to use the io_lib:printable_list/1 function to avoid compatibility problems.</p></note>
+      </desc>
+    </func>
+    <func>
       <name name="setopts" arity="1"/>
       <name name="setopts" arity="2"/>
       <fsummary>Set options</fsummary>
diff --git a/lib/stdlib/doc/src/io_lib.xml b/lib/stdlib/doc/src/io_lib.xml
index 001d34a7c2..3dac259477 100644
--- a/lib/stdlib/doc/src/io_lib.xml
+++ b/lib/stdlib/doc/src/io_lib.xml
@@ -301,7 +301,11 @@
       <fsummary>Test for a list of printable characters</fsummary>
       <desc>
         <p>Returns <c>true</c> if <c><anno>Term</anno></c> is a flat list of
-          printable Unicode characters, otherwise it returns <c>false</c>.</p>
+          printable characters, otherwise it returns <c>false</c>.</p>
+	  <p>What is a printable character in this case is determined by the
+	  <c>+pc</c> start up flag to the Erlang VM. See 
+	  <seealso marker="io#printable_range/0">io:printable_range/0</seealso> 
+	  and <seealso marker="erts:erl#erl">erl(1)</seealso>.</p>
       </desc>
     </func>
     <func>
@@ -312,6 +316,14 @@
           printable ISO-latin-1 characters, otherwise it returns <c>false</c>.</p>
       </desc>
     </func>
+    <func>
+      <name name="printable_unicode_list" arity="1"/>
+      <fsummary>Test for a list of printable Unicode characters</fsummary>
+      <desc>
+        <p>Returns <c>true</c> if <c><anno>Term</anno></c> is a flat list of
+          printable Unicode characters, otherwise it returns <c>false</c>.</p>
+      </desc>
+    </func>
   </funcs>
 </erlref>
 
diff --git a/lib/stdlib/src/erl_pp.erl b/lib/stdlib/src/erl_pp.erl
index 06dae51cc9..7c7566e4ec 100644
--- a/lib/stdlib/src/erl_pp.erl
+++ b/lib/stdlib/src/erl_pp.erl
@@ -42,7 +42,7 @@
                 | {encoding, latin1 | unicode | utf8}).
 -type(options() :: hook_function() | [option()]).
 
--record(pp, {string_fun, char_fun, term_fun}).
+-record(pp, {string_fun, char_fun}).
 
 -record(options, {hook, encoding, opts}).
 
@@ -182,13 +182,11 @@ state(_Hook) ->
 
 state() ->
     #pp{string_fun = fun io_lib:write_string_as_latin1/1,
-        char_fun   = fun io_lib:write_char_as_latin1/1,
-        term_fun   = fun(T) -> io_lib:format("~p", [T]) end}.
+        char_fun   = fun io_lib:write_char_as_latin1/1}.
 
 unicode_state() ->
     #pp{string_fun = fun io_lib:write_string/1,
-        char_fun   = fun io_lib:write_char/1,
-        term_fun   = fun(T) -> io_lib:format("~tp", [T]) end}.
+        char_fun   = fun io_lib:write_char/1}.
 
 encoding(Options) ->
     case proplists:get_value(encoding, Options, epp:default_encoding()) of
@@ -204,10 +202,10 @@ lform({function,Line,Name,Arity,Clauses}, Opts, _State) ->
 lform({rule,Line,Name,Arity,Clauses}, Opts, _State) ->
     lrule({rule,Line,Name,Arity,Clauses}, Opts);
 %% These are specials to make it easier for the compiler.
-lform({error,E}, _Opts, State) ->
-    leaf((State#pp.term_fun)({error,E})++"\n");
-lform({warning,W}, _Opts, State) ->
-    leaf((State#pp.term_fun)({warning,W})++"\n");
+lform({error,E}, _Opts, _State) ->
+    leaf(format("~p\n", [{error,E}]));
+lform({warning,W}, _Opts, _State) ->
+    leaf(format("~p\n", [{warning,W}]));
 lform({eof,_Line}, _Opts, _State) ->
     $\n.
 
@@ -233,7 +231,7 @@ lattribute(import, Name, _Opts, _State) when is_list(Name) ->
 lattribute(import, {From,Falist}, _Opts, _State) ->
     attr("import",[{var,0,pname(From)},falist(Falist)]);
 lattribute(file, {Name,Line}, _Opts, State) ->
-    attr("file", [{var,0,(State#pp.term_fun)(Name)},{integer,0,Line}]);
+    attr("file", [{var,0,(State#pp.string_fun)(Name)},{integer,0,Line}]);
 lattribute(record, {Name,Is}, Opts, _State) ->
     Nl = leaf(format("-record(~w,", [Name])),
     [{first,Nl,record_fields(Is, Opts)},$)];
diff --git a/lib/stdlib/src/io.erl b/lib/stdlib/src/io.erl
index 3dddb0d6e7..c92e9e3ade 100644
--- a/lib/stdlib/src/io.erl
+++ b/lib/stdlib/src/io.erl
@@ -32,6 +32,8 @@
          parse_erl_exprs/4,parse_erl_form/1,parse_erl_form/2,
          parse_erl_form/3,parse_erl_form/4]).
 -export([request/1,request/2,requests/1,requests/2]).
+%% Implemented in native code
+-export([printable_range/0]).
 
 -export_type([device/0, format/0, server_no_data/0]).
 
@@ -66,6 +68,11 @@ o_request(Io, Request, Func) ->
 	    Other
     end.
 
+%% Request what the user considers printable characters
+-spec printable_range() -> 'unicode' | 'latin1'.
+printable_range() ->
+    erlang:nif_error(undefined).
+
 %% Put chars takes mixed *unicode* list from R13 onwards.
 -spec put_chars(CharData) -> 'ok' when
       CharData :: unicode:chardata().
diff --git a/lib/stdlib/src/io_lib.erl b/lib/stdlib/src/io_lib.erl
index b7ec848e1e..a9b6d4131e 100644
--- a/lib/stdlib/src/io_lib.erl
+++ b/lib/stdlib/src/io_lib.erl
@@ -72,7 +72,7 @@
 
 -export([quote_atom/2, char_list/1, latin1_char_list/1,
 	 deep_char_list/1, deep_latin1_char_list/1,
-	 printable_list/1, printable_latin1_list/1]).
+	 printable_list/1, printable_latin1_list/1, printable_unicode_list/1]).
 
 %% Utilities for collecting characters.
 -export([collect_chars/3, collect_chars/4,
@@ -533,27 +533,45 @@ printable_latin1_list(_) -> false.			%Everything else is false
 %%  Return true if CharList is a list of printable characters, else
 %%  false. The notion of printable in Unicode terms is somewhat floating.
 %%  Everything that is not a control character and not invalid unicode
-%%  will be considered printable.
+%%  will be considered printable. 
+%%  What the user has noted as printable characters is what actually 
+%%  specifies when this function will return true. If the VM is started
+%%  with +pc latin1, only the latin1 range will be deemed as printable
+%%  if on the other hand +pc unicode is given, all characters in the Unicode
+%%  character set are deemed printable. latin1 is default.
 
 -spec printable_list(Term) -> boolean() when
       Term :: term().
 
-printable_list([C|Cs]) when is_integer(C), C >= $\040, C =< $\176 ->
-    printable_list(Cs);
-printable_list([C|Cs])
+printable_list(L) ->
+    %% There will be more alternatives returns from io:printable range 
+    %% in the future. To not have a catch-all clause is deliberate.
+    case io:printable_range() of
+	latin1 ->
+	    printable_latin1_list(L);
+	unicode ->
+	    printable_unicode_list(L)
+    end.
+
+-spec printable_unicode_list(Term) -> boolean() when
+      Term :: term().
+
+printable_unicode_list([C|Cs]) when is_integer(C), C >= $\040, C =< $\176 ->
+    printable_unicode_list(Cs);
+printable_unicode_list([C|Cs])
   when is_integer(C), C >= 16#A0, C < 16#D800;
        is_integer(C), C > 16#DFFF, C < 16#FFFE;
        is_integer(C), C > 16#FFFF, C =< 16#10FFFF ->
-    printable_list(Cs);
-printable_list([$\n|Cs]) -> printable_list(Cs);
-printable_list([$\r|Cs]) -> printable_list(Cs);
-printable_list([$\t|Cs]) -> printable_list(Cs);
-printable_list([$\v|Cs]) -> printable_list(Cs);
-printable_list([$\b|Cs]) -> printable_list(Cs);
-printable_list([$\f|Cs]) -> printable_list(Cs);
-printable_list([$\e|Cs]) -> printable_list(Cs);
-printable_list([]) -> true;
-printable_list(_) -> false.		%Everything else is false
+    printable_unicode_list(Cs);
+printable_unicode_list([$\n|Cs]) -> printable_unicode_list(Cs);
+printable_unicode_list([$\r|Cs]) -> printable_unicode_list(Cs);
+printable_unicode_list([$\t|Cs]) -> printable_unicode_list(Cs);
+printable_unicode_list([$\v|Cs]) -> printable_unicode_list(Cs);
+printable_unicode_list([$\b|Cs]) -> printable_unicode_list(Cs);
+printable_unicode_list([$\f|Cs]) -> printable_unicode_list(Cs);
+printable_unicode_list([$\e|Cs]) -> printable_unicode_list(Cs);
+printable_unicode_list([]) -> true;
+printable_unicode_list(_) -> false.		%Everything else is false
 
 %% List = nl()
 %%  Return a list of characters to generate a newline.
diff --git a/lib/stdlib/src/io_lib_pretty.erl b/lib/stdlib/src/io_lib_pretty.erl
index 525b534249..7637ad7a3d 100644
--- a/lib/stdlib/src/io_lib_pretty.erl
+++ b/lib/stdlib/src/io_lib_pretty.erl
@@ -485,13 +485,18 @@ printable_bin(Bin, Len, D, latin1) ->
             false
     end;
 printable_bin(Bin, Len, D, _Uni) ->
-    case printable_unicode(Bin, Len, []) of
-        {_, <<>>, L} ->
-            {byte_size(Bin) =:= length(L), L};
-        {NC, Bin1, L} when D > 0, Len - NC >= D ->
-            {byte_size(Bin)-byte_size(Bin1) =:= length(L), true, L};
-        {_NC, _Bin, _L} ->
-            false
+    case valid_utf8(Bin,Len) of
+	true ->
+	    case printable_unicode(Bin, Len, [], io:printable_range()) of
+		{_, <<>>, L} ->
+		    {byte_size(Bin) =:= length(L), L};
+		{NC, Bin1, L} when D > 0, Len - NC >= D ->
+		    {byte_size(Bin)-byte_size(Bin1) =:= length(L), true, L};
+		{_NC, _Bin, _L} ->
+		    false
+	    end;
+	false ->
+	    printable_bin(Bin, Len, D, latin1)
     end.
 
 printable_bin1(_Bin, _Start, 0) ->
@@ -522,24 +527,36 @@ printable_latin1_list([$\e | Cs], N) -> printable_latin1_list(Cs, N - 1);
 printable_latin1_list([], _) -> all;
 printable_latin1_list(_, N) -> N.
 
-printable_unicode(<<C/utf8, R/binary>>=Bin, I, L) when I > 0 ->
-    case printable_char(C) of
+valid_utf8(<<>>,_) ->
+    true;
+valid_utf8(_,0) ->
+    true;
+valid_utf8(<<_/utf8, R/binary>>,N) ->
+    valid_utf8(R,N-1);
+valid_utf8(_,_) ->
+    false.
+
+printable_unicode(<<C/utf8, R/binary>>=Bin, I, L, Range) when I > 0 ->
+    case printable_char(C,Range) of
         true ->
-            printable_unicode(R, I - 1, [C | L]);
+            printable_unicode(R, I - 1, [C | L],Range);
         false ->
             {I, Bin, lists:reverse(L)}
     end;
-printable_unicode(Bin, I, L) ->
+printable_unicode(Bin, I, L,_) ->
     {I, Bin, lists:reverse(L)}.
 
-printable_char($\n) -> true;
-printable_char($\r) -> true;
-printable_char($\t) -> true;
-printable_char($\v) -> true;
-printable_char($\b) -> true;
-printable_char($\f) -> true;
-printable_char($\e) -> true;
-printable_char(C) ->
+printable_char($\n,_) -> true;
+printable_char($\r,_) -> true;
+printable_char($\t,_) -> true;
+printable_char($\v,_) -> true;
+printable_char($\b,_) -> true;
+printable_char($\f,_) -> true;
+printable_char($\e,_) -> true;
+printable_char(C,latin1) ->
+    C >= $\s andalso C =< $~ orelse
+    C >= 16#A0 andalso C =< 16#FF;
+printable_char(C,unicode) ->
     C >= $\s andalso C =< $~ orelse
     C >= 16#A0 andalso C < 16#D800 orelse
     C > 16#DFFF andalso C < 16#FFFE orelse
diff --git a/lib/stdlib/src/shell.erl b/lib/stdlib/src/shell.erl
index df66acb97b..96f3e5dd32 100644
--- a/lib/stdlib/src/shell.erl
+++ b/lib/stdlib/src/shell.erl
@@ -129,7 +129,7 @@ start_restricted(RShMod) when is_atom(RShMod) ->
 	    error_logger:error_report(
 	      lists:flatten(
 		io_lib:fwrite(
-		  "Restricted shell module ~w not found: ~"++cs_p() ++"\n",
+		  "Restricted shell module ~w not found: ~tp\n",
 		  [RShMod,What]))),
 	    Error
     end.
@@ -214,8 +214,7 @@ server(StartSync) ->
             ok;
 	{RShMod2,What2} -> 
             io:fwrite(
-              ("Warning! Restricted shell module ~w not found: ~"
-               ++cs_p()++".\n"
+              ("Warning! Restricted shell module ~w not found: ~tp.\n"
                "Only the commands q() and init:stop() will be allowed!\n"),
               [RShMod2,What2]),
             application:set_env(stdlib, restricted_shell, ?MODULE)
@@ -337,7 +336,7 @@ get_prompt_func() ->
     end.
 
 bad_prompt_func(M) ->
-    fwrite_severity(benign, "Bad prompt function: ~"++cs_p(), [M]).
+    fwrite_severity(benign, "Bad prompt function: ~tp", [M]).
 
 default_prompt(N) ->
     %% Don't bother flattening the list irrespective of what the
@@ -1380,27 +1379,18 @@ pp(V, I, RT, Enc) ->
                              {record_print_fun, record_print_fun(RT)}]
                             ++ Enc)).
 
-%% Control sequence 'p' possibly with Unicode translation modifier
-cs_p() ->
-    case encoding() of
-        latin1 -> "p";
-        unicode -> "tp"
-    end.
-
 columns() ->
     case io:columns() of
         {ok,N} -> N;
         _ -> 80
     end.
-
 encoding() ->
     [{encoding, Encoding}] = enc(),
     Encoding.
-
 enc() ->
     case lists:keyfind(encoding, 1, io:getopts()) of
-        false -> [{encoding,latin1}]; % should never happen
-        Enc -> [Enc]
+	false -> [{encoding,latin1}]; % should never happen
+	Enc -> [Enc]
     end.
 
 garb(Shell) ->
@@ -1424,10 +1414,9 @@ check_env(V) ->
 	{ok, Val} when is_integer(Val), Val >= 0 ->
 	    ok;
         {ok, Val} ->
-            Txt = io_lib:fwrite(
-                    ("Invalid value of STDLIB configuration parameter ~w: ~"
-                     ++cs_p()++"\n"),
-                    [V, Val]),
+            Txt = io_lib:fwrite
+                    ("Invalid value of STDLIB configuration parameter"
+                     "~w: ~tp\n", [V, Val]),
 	    error_logger:info_report(lists:flatten(Txt))
     end.
 	    
diff --git a/lib/stdlib/test/epp_SUITE.erl b/lib/stdlib/test/epp_SUITE.erl
index 041d521514..b2f1aa955a 100644
--- a/lib/stdlib/test/epp_SUITE.erl
+++ b/lib/stdlib/test/epp_SUITE.erl
@@ -25,7 +25,7 @@
 	 variable_1/1, otp_4870/1, otp_4871/1, otp_5362/1,
          pmod/1, not_circular/1, skip_header/1, otp_6277/1, otp_7702/1,
          otp_8130/1, overload_mac/1, otp_8388/1, otp_8470/1, otp_8503/1,
-         otp_8562/1, otp_8665/1, otp_8911/1, otp_10302/1]).
+         otp_8562/1, otp_8665/1, otp_8911/1, otp_10302/1, otp_10820/1]).
 
 -export([epp_parse_erl_form/2]).
 
@@ -67,7 +67,7 @@ all() ->
      {group, variable}, otp_4870, otp_4871, otp_5362, pmod,
      not_circular, skip_header, otp_6277, otp_7702, otp_8130,
      overload_mac, otp_8388, otp_8470, otp_8503, otp_8562,
-     otp_8665, otp_8911, otp_10302].
+     otp_8665, otp_8911, otp_10302, otp_10820].
 
 groups() -> 
     [{upcase_mac, [], [upcase_mac_1, upcase_mac_2]},
@@ -1359,6 +1359,30 @@ encoding_nocom(Enc, File) ->
     ok = file:close(Fd),
     E = epp:read_encoding(File, Options).
 
+otp_10820(doc) ->
+    "OTP-10820. Unicode filenames.";
+otp_10820(suite) ->
+    [];
+otp_10820(Config) when is_list(Config) ->
+    L = [915,953,959,973,957,953,954,959,957,964],
+    Dir = ?config(priv_dir, Config),
+    File = filename:join(Dir, L++".erl"),
+    C1 = <<"%% coding: utf-8\n -module(any).">>,
+    ok = do_otp_10820(File, C1, "+pc latin1"),
+    ok = do_otp_10820(File, C1, "+pc unicode"),
+    C2 = <<"\n-module(any).">>,
+    ok = do_otp_10820(File, C2, "+pc latin1"),
+    ok = do_otp_10820(File, C2, "+pc unicode").
+
+do_otp_10820(File, C, PC) ->
+    {ok,Node} = start_node(erl_pp_helper, "+fnu " ++ PC),
+    ok = rpc:call(Node, file, write_file, [File, C]),
+    {ok,[{attribute,1,file,{File,1}},
+         {attribute,2,module,any},
+         {eof,2}]} = rpc:call(Node, epp, parse_file, [File, [],[]]),
+    true = test_server:stop_node(Node),
+    ok.
+
 check(Config, Tests) ->
     eval_tests(Config, fun check_test/2, Tests).
 
@@ -1475,3 +1499,8 @@ ln2({error,M}) ->
     {error,ln2(M)};
 ln2(M) ->
     M.
+
+%% +fnu means a peer node has to be started; slave will not do
+start_node(Name, Xargs) ->
+    ?line PA = filename:dirname(code:which(?MODULE)),
+    test_server:start_node(Name, peer, [{args, "-pa " ++ PA ++ " " ++ Xargs}]).
diff --git a/lib/stdlib/test/erl_pp_SUITE.erl b/lib/stdlib/test/erl_pp_SUITE.erl
index 37be61d665..9c0a43abcc 100644
--- a/lib/stdlib/test/erl_pp_SUITE.erl
+++ b/lib/stdlib/test/erl_pp_SUITE.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2006-2012. All Rights Reserved.
+%% Copyright Ericsson AB 2006-2013. All Rights Reserved.
 %%
 %% The contents of this file are subject to the Erlang Public License,
 %% Version 1.1, (the "License"); you may not use this file except in
@@ -49,7 +49,7 @@
 
 	  otp_6321/1, otp_6911/1, otp_6914/1, otp_8150/1, otp_8238/1,
 	  otp_8473/1, otp_8522/1, otp_8567/1, otp_8664/1, otp_9147/1,
-          otp_10302/1]).
+          otp_10302/1, otp_10820/1]).
 
 %% Internal export.
 -export([ehook/6]).
@@ -80,7 +80,8 @@ groups() ->
      {attributes, [], [misc_attrs, import_export]},
      {tickets, [],
       [otp_6321, otp_6911, otp_6914, otp_8150, otp_8238,
-       otp_8473, otp_8522, otp_8567, otp_8664, otp_9147, otp_10302]}].
+       otp_8473, otp_8522, otp_8567, otp_8664, otp_9147,
+       otp_10302, otp_10820]}].
 
 init_per_suite(Config) ->
     Config.
@@ -1074,6 +1075,34 @@ otp_10302(Config) when is_list(Config) ->
 unicode_hook({foo,E}, I, P, H) ->
     erl_pp:expr({call,0,{atom,0,foo},[E]}, I, P, H).
 
+otp_10820(doc) ->
+    "OTP-10820. Unicode filenames.";
+otp_10820(suite) -> [];
+otp_10820(Config) when is_list(Config) ->
+    C1 = <<"%% coding: utf-8\n -module(any).">>,
+    ok = do_otp_10820(Config, C1, "+pc latin1"),
+    ok = do_otp_10820(Config, C1, "+pc unicode"),
+    C2 = <<"-module(any).">>,
+    ok = do_otp_10820(Config, C2, "+pc latin1"),
+    ok = do_otp_10820(Config, C2, "+pc unicode").
+
+do_otp_10820(Config, C, PC) ->
+    {ok,Node} = start_node(erl_pp_helper, "+fnu " ++ PC),
+    L = [915,953,959,973,957,953,954,959,957,964],
+    FileName = filename(L++".erl", Config),
+    ok = rpc:call(Node, file, write_file, [FileName, C]),
+    {ok, _, []} =  rpc:call(Node, compile, file,
+                            [FileName, [return,'P',{outdir,?privdir}]]),
+    PFileName = filename(L++".P", Config),
+    {ok, Bin} = rpc:call(Node, file, read_file, [PFileName]),
+    true = test_server:stop_node(Node),
+    true = file_attr_is_string(binary_to_list(Bin)),
+    ok.
+
+file_attr_is_string("-file(\"" ++ _) -> true;
+file_attr_is_string([_ | L]) ->
+    file_attr_is_string(L).
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 compile(Config, Tests) ->
@@ -1247,3 +1276,8 @@ filename(Name, Config) ->
 fail() ->
     io:format("failed~n"),
     ?t:fail().
+
+%% +fnu means a peer node has to be started; slave will not do
+start_node(Name, Xargs) ->
+    ?line PA = filename:dirname(code:which(?MODULE)),
+    test_server:start_node(Name, peer, [{args, "-pa " ++ PA ++ " " ++ Xargs}]).
diff --git a/lib/stdlib/test/escript_SUITE.erl b/lib/stdlib/test/escript_SUITE.erl
index be8fb1b37a..cf5fb12686 100644
--- a/lib/stdlib/test/escript_SUITE.erl
+++ b/lib/stdlib/test/escript_SUITE.erl
@@ -913,7 +913,7 @@ unicode(Config) when is_list(Config) ->
     run(Dir, "unicode1",
         [<<"escript: exception error: an error occurred when evaluating"
            " an arithmetic expression\n  in operator  '/'/2\n     "
-           "called as <<170>> / <<170>>\nExitCode:127">>]),
+           "called as <<224,170,170>> / <<224,170,170>>\nExitCode:127">>]),
     run(Dir, "unicode2",
         [<<"escript: exception error: an error occurred when evaluating"
            " an arithmetic expression\n  in operator  '/'/2\n     "
diff --git a/lib/stdlib/test/escript_SUITE_data/unicode1 b/lib/stdlib/test/escript_SUITE_data/unicode1
index a77574625e..351bb785e5 100755
--- a/lib/stdlib/test/escript_SUITE_data/unicode1
+++ b/lib/stdlib/test/escript_SUITE_data/unicode1
@@ -6,7 +6,7 @@
 main(_) ->
     ok = io:setopts([{encoding,unicode}]),
     _D = erlang:system_flag(backtrace_depth, 0),
-    A = <<"\x{aa}">>,
+    A = <<"\x{aaa}"/utf8>>,
     S = lists:flatten(io_lib:format("~p/~p.", [A, A])),
     {ok, Ts, _} = erl_scan:string(S, 1, [unicode]),
     {ok, Es} = erl_parse:parse_exprs(Ts),
diff --git a/lib/stdlib/test/io_SUITE.erl b/lib/stdlib/test/io_SUITE.erl
index aa698ecaa2..9f828c6d2d 100644
--- a/lib/stdlib/test/io_SUITE.erl
+++ b/lib/stdlib/test/io_SUITE.erl
@@ -29,9 +29,12 @@
          manpage/1, otp_6708/1, otp_7084/1, otp_7421/1,
 	 io_lib_collect_line_3_wb/1, cr_whitespace_in_string/1,
 	 io_fread_newlines/1, otp_8989/1, io_lib_fread_literal/1,
+	 printable_range/1,
 	 io_lib_print_binary_depth_one/1, otp_10302/1, otp_10755/1,
 	 otp_10836/1]).
 
+-export([pretty/2]).
+
 %-define(debug, true).
 
 -ifdef(debug).
@@ -66,6 +69,7 @@ all() ->
      manpage, otp_6708, otp_7084, otp_7421,
      io_lib_collect_line_3_wb, cr_whitespace_in_string,
      io_fread_newlines, otp_8989, io_lib_fread_literal,
+     printable_range,
      io_lib_print_binary_depth_one, otp_10302, otp_10755, otp_10836].
 
 groups() -> 
@@ -2026,6 +2030,79 @@ io_lib_fread_literal(Suite) when is_list(Suite) ->
     ?line {done,{ok,[]},[]} = io_lib:fread(C2, "d\n", " d"),
     ok.
 
+
+printable_range(doc) ->
+    "Check that the printable range set by the user actually works";
+printable_range(Suite) when is_list(Suite) ->
+    Pa = filename:dirname(code:which(?MODULE)),
+    {ok, UNode} = test_server:start_node(printable_range_unicode, slave,
+					 [{args, " +pc unicode -pa " ++ Pa}]),
+    {ok, LNode} = test_server:start_node(printable_range_latin1, slave,
+					 [{args, " +pc latin1 -pa " ++ Pa}]),
+    {ok, DNode} = test_server:start_node(printable_range_default, slave,
+					 [{args, " -pa " ++ Pa}]),
+    unicode = rpc:call(UNode,io,printable_range,[]),
+    latin1 = rpc:call(LNode,io,printable_range,[]),
+    latin1 = rpc:call(DNode,io,printable_range,[]),
+    test_server:stop_node(UNode),
+    test_server:stop_node(LNode),
+    {ok, UNode} = test_server:start_node(printable_range_unicode, slave,
+					 [{args, " +pcunicode -pa " ++ Pa}]),
+    {ok, LNode} = test_server:start_node(printable_range_latin1, slave,
+					 [{args, " +pclatin1 -pa " ++ Pa}]),
+    unicode = rpc:call(UNode,io,printable_range,[]),
+    latin1 = rpc:call(LNode,io,printable_range,[]),
+    {error, _} = test_server:start_node(printable_range_unnicode, slave,
+					[{args, " +pcunnicode -pa " ++ Pa}]),
+    PrettyOptions = [{column,1},
+		     {line_length,109},
+		     {depth,30},
+		     {max_chars,60},
+		     {record_print_fun,
+		      fun(_,_) -> no end},
+		     {encoding,unicode}],
+    1025 = lists:max(lists:flatten(rpc:call(UNode,io_lib_pretty,print,
+					    [{hello, [1024,1025]},
+					     PrettyOptions]))),
+    125 = lists:max(lists:flatten(rpc:call(LNode,io_lib_pretty,print,
+					   [{hello, [1024,1025]},
+					    PrettyOptions]))),
+    125 = lists:max(lists:flatten(rpc:call(DNode,io_lib_pretty,print,
+					   [{hello, [1024,1025]},
+					    PrettyOptions]))),
+    1025 = lists:max(lists:flatten(rpc:call(UNode,io_lib_pretty,print,
+					    [{hello, <<1024/utf8,1025/utf8>>},
+					     PrettyOptions]))),
+    125 = lists:max(lists:flatten(rpc:call(LNode,io_lib_pretty,print,
+					   [{hello, <<1024/utf8,1025/utf8>>},
+					    PrettyOptions]))),
+    125 = lists:max(lists:flatten(rpc:call(DNode,io_lib_pretty,print,
+					   [{hello, <<1024/utf8,1025/utf8>>},
+					    PrettyOptions]))),
+    
+    1025 = lists:max(lists:flatten(rpc:call(UNode,io_lib,format,
+					    ["~tp",[{hello, [1024,1025]}]]))),
+    125 = lists:max(lists:flatten(rpc:call(LNode,io_lib,format,
+					   ["~tp",[{hello, [1024,1025]}]]))),
+    125 = lists:max(lists:flatten(rpc:call(DNode,io_lib,format,
+					   ["~tp",[{hello, [1024,1025]}]]))),
+    1025 = lists:max(lists:flatten(rpc:call(UNode,io_lib,format,
+					    ["~tp",
+					     [{hello, 
+					       <<1024/utf8,1025/utf8>>}]]))),
+    125 = lists:max(lists:flatten(rpc:call(LNode,io_lib,format,
+					   ["~tp",
+					    [{hello,
+					      <<1024/utf8,1025/utf8>>}]]))),
+    125 = lists:max(lists:flatten(rpc:call(DNode,io_lib,format,
+					   ["~tp",
+					    [{hello,
+					      <<1024/utf8,1025/utf8>>}]]))),
+    test_server:stop_node(UNode),
+    test_server:stop_node(LNode),
+    test_server:stop_node(DNode),
+    ok.
+
 io_lib_print_binary_depth_one(doc) ->
     "Test binaries printed with a depth of one behave correctly";
 io_lib_print_binary_depth_one(Suite) when is_list(Suite) ->
@@ -2040,16 +2117,30 @@ io_lib_print_binary_depth_one(Suite) when is_list(Suite) ->
 otp_10302(doc) ->
     "OTP-10302. Unicode";
 otp_10302(Suite) when is_list(Suite) ->
-    "\"\x{400}\"" = pretty("\x{400}", -1),
-    "<<\"\x{400}\"/utf8>>" = pretty(<<"\x{400}"/utf8>>, -1),
+    Pa = filename:dirname(code:which(?MODULE)),
+    {ok, UNode} = test_server:start_node(printable_range_unicode, slave,
+					 [{args, " +pc unicode -pa " ++ Pa}]),
+    {ok, LNode} = test_server:start_node(printable_range_latin1, slave,
+					 [{args, " +pc latin1 -pa " ++ Pa}]),
+    "\"\x{400}\"" = rpc:call(UNode,?MODULE,pretty,["\x{400}", -1]),
+    "<<\"\x{400}\"/utf8>>" = rpc:call(UNode,?MODULE,pretty,
+				      [<<"\x{400}"/utf8>>, -1]),
+
+    "<<\"\x{400}foo\"/utf8>>" = rpc:call(UNode,?MODULE,pretty,
+					 [<<"\x{400}foo"/utf8>>, 2]),
+    "[1024]" = rpc:call(LNode,?MODULE,pretty,["\x{400}", -1]),
+    "<<208,128>>" = rpc:call(LNode,?MODULE,pretty,[<<"\x{400}"/utf8>>, -1]),
+
+    "<<208,...>>" = rpc:call(LNode,?MODULE,pretty,[<<"\x{400}foo"/utf8>>, 2]),
+    test_server:stop_node(UNode),
+    test_server:stop_node(LNode),
 
-    "<<\"\x{400}foo\"/utf8>>" = pretty(<<"\x{400}foo"/utf8>>, 2),
     "<<\"äppl\"/utf8>>" = pretty(<<"äppl"/utf8>>, 2),
     "<<\"äppl\"/utf8...>>" = pretty(<<"äpple"/utf8>>, 2),
     "<<\"apel\">>" = pretty(<<"apel">>, 2),
     "<<\"apel\"...>>" = pretty(<<"apelsin">>, 2),
-    "<<228,112,112,108>>" = fmt("~tp", [<<"äppl">>]),
-    "<<228,...>>" = fmt("~tP", [<<"äppl">>, 2]),
+    "<<\"äppl\">>" = fmt("~tp", [<<"äppl">>]),
+    "<<\"äppl\"...>>" = fmt("~tP", [<<"äpple">>, 2]),
     "<<0,0,0,0,0,0,1,0>>" = fmt("~p", [<<256:64/unsigned-integer>>]),
     "<<0,0,0,0,0,0,1,0>>" = fmt("~tp", [<<256:64/unsigned-integer>>]),
 
diff --git a/lib/stdlib/test/io_proto_SUITE.erl b/lib/stdlib/test/io_proto_SUITE.erl
index 299daf0e42..ddcc8dfdab 100644
--- a/lib/stdlib/test/io_proto_SUITE.erl
+++ b/lib/stdlib/test/io_proto_SUITE.erl
@@ -716,7 +716,7 @@ binary_options(Config) when is_list(Config) ->
 			  {getline, "<<\"hej\\n\">>"},
 			  {putline, "io:get_line('')."},
 			  {putline, binary_to_list(<<"\345\344\366"/utf8>>)},
-			  {getline, "<<\""++binary_to_list(unicode:characters_to_binary(<<"\345\344\366"/utf8>>,latin1,utf8))++"\\n\">>"}
+			  {getline, "<<\""++binary_to_list(<<"\345\344\366"/utf8>>)++"\\n\"/utf8>>"}
 			 ],[])
     end,
    %% And one with oldshell
@@ -1784,8 +1784,8 @@ get_default_shell() ->
 		{putline, "whereis(user_drv)."},
 		{getline, "undefined"}],[]),
 	old
-    catch E:R ->
-	    ?dbg({E,R}),
+    catch _E:_R ->
+	    ?dbg({_E,_R}),
 	    new
     end.
 
diff --git a/lib/stdlib/test/shell_SUITE.erl b/lib/stdlib/test/shell_SUITE.erl
index f22df96697..990b1f5eb2 100644
--- a/lib/stdlib/test/shell_SUITE.erl
+++ b/lib/stdlib/test/shell_SUITE.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2004-2012. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2013. All Rights Reserved.
 %%
 %% The contents of this file are subject to the Erlang Public License,
 %% Version 1.1, (the "License"); you may not use this file except in
@@ -2742,6 +2742,9 @@ otp_10302(doc) ->
     "OTP-10302. Unicode.";
 otp_10302(suite) -> [];
 otp_10302(Config) when is_list(Config) ->
+    {ok,Node} = start_node(shell_suite_helper_2,
+			   "-pa "++?config(priv_dir,Config)++
+			   " +pc unicode"),
     Test1 =
         <<"begin
                io:setopts([{encoding,utf8}]),
@@ -2749,13 +2752,13 @@ otp_10302(Config) when is_list(Config) ->
                rd(rec, {a = \"\\x{400}\"}),
                ok = rl(rec)
             end.">>,
-    "-record(rec,{a = \"\x{400}\"}).\nok.\n" = t(Test1),
+    "-record(rec,{a = \"\x{400}\"}).\nok.\n" = t({Node,Test1}),
 
     Test3 =
         <<"io:setopts([{encoding,utf8}]).
            rd(rec, {a = \"\\x{400}\"}).
            ok = rp(#rec{}).">>,
-    "ok.\nrec\n#rec{a = \"\x{400}\"}.\nok.\n" = t(Test3),
+    "ok.\nrec\n#rec{a = \"\x{400}\"}.\nok.\n" = t({Node,Test3}),
 
     Test4 =
         <<"io:setopts([{encoding,utf8}]).
@@ -2766,7 +2769,7 @@ otp_10302(Config) when is_list(Config) ->
     "ok.\n\"\x{400}\"\nA = \"\x{400}\".\nok.\n"
     "1: io:setopts([{encoding,utf8}])\n-> ok.\n"
     "2: A = [1024] = \"\x{400}\"\n-> \"\x{400}\"\n"
-    "3: b()\n-> ok.\nok.\n" = t(Test4),
+    "3: b()\n-> ok.\nok.\n" = t({Node,Test4}),
 
     Test5 =
         <<"begin
@@ -2776,18 +2779,20 @@ otp_10302(Config) when is_list(Config) ->
                b(),
                h()
            end.">>,
-    "A = \"\x{400}\".\nok.\n" = t(Test5),
+    "A = \"\x{400}\".\nok.\n" = t({Node,Test5}),
 
     %% One $" is "lost":
     true =
        "\x{400}\": command not found" =:=
-       prompt_err({<<"io:setopts([{encoding,utf8}]). v(\"\x{400}\")."/utf8>>,
+       prompt_err({Node,
+                   <<"io:setopts([{encoding,utf8}]). v(\"\x{400}\")."/utf8>>,
                    unicode}),
 
     "ok.\ndefault\n* Bad prompt function: \"\x{400}\".\n" =
-        t({<<"io:setopts([{encoding,utf8}]). "
+        t({Node,<<"io:setopts([{encoding,utf8}]). "
              "shell:prompt_func(\"\x{400}\")."/utf8>>,
            unicode}),
+    rpc:call(Node,shell, prompt_func, [default]),
     _ = shell:prompt_func(default),
 
     %% Test lib:format_exception() (cf. OTP-6554)
@@ -2812,10 +2817,10 @@ otp_10302(Config) when is_list(Config) ->
            {ok, Es} = erl_parse:parse_exprs(Ts),
            B = erl_eval:new_bindings(),
            erl_eval:exprs(Es, B).">>,
-
+    
     "ok.\n** exception error: an error occurred when evaluating"
         " an arithmetic expression\n     in operator  '/'/2\n"
-        "        called as <<170>> / <<170>>.\n" = t(Test7),
+        "        called as <<\"�\">> / <<\"�\">>.\n" = t({Node,Test7}),
     Test8 =
         <<"begin
                A = [1089],
@@ -2839,7 +2844,7 @@ otp_10302(Config) when is_list(Config) ->
 
     "ok.\n** exception error: an error occurred when evaluating"
         " an arithmetic expression\n     in operator  '/'/2\n"
-        "        called as \"\x{441}\" / \"\x{441}\".\n" = t(Test9),
+        "        called as \"\x{441}\" / \"\x{441}\".\n" = t({Node,Test9}),
     Test10 =
         <<"A = {\"1\\xaa\",
            $\\xaa,
@@ -2861,7 +2866,7 @@ otp_10302(Config) when is_list(Config) ->
     "ok.\n** exception error: no function clause matching \n"
     "                    erl_eval:'-inside-an-interpreted-fun-'"
     "({\"1\xaa\",170,<<\"hi\">>,\n                                           "
-    "                 <<\"1\xaa\"/utf8>>}) .\n"  = t(Test11),
+    "                 <<\"1\xaa\"/utf8>>}) .\n"  = t({Node,Test11}),
     Test12 = <<"fun(a, b) -> false end(65, [1089]).">>,
     "** exception error: no function clause matching \n"
     "                    erl_eval:'-inside-an-interpreted-fun-'(65,[1089])"
@@ -2871,8 +2876,9 @@ otp_10302(Config) when is_list(Config) ->
            fun(a, b) -> false end(65, [1089]).">>,
     "ok.\n** exception error: no function clause matching \n"
     "                    erl_eval:'-inside-an-interpreted-fun-'(65,\"\x{441}\")"
-    " .\n" = t(Test13),
+    " .\n" = t({Node,Test13}),
 
+    test_server:stop_node(Node),
     ok.
 
 scan(B) ->
@@ -2895,6 +2901,8 @@ scan(S0, F) ->
             []
     end.
 
+t({Node,Bin,Enc}) when is_atom(Node),is_binary(Bin), is_atom(Enc) ->
+    t0({Bin,Enc}, fun() -> start_new_shell(Node) end);
 t({Node,Bin}) when is_atom(Node),is_binary(Bin) ->
     t0({Bin,latin1}, fun() -> start_new_shell(Node) end);
 t(Bin) when is_binary(Bin) ->