Merge branch 'hasse/unicode_atoms/OTP-14285'

* hasse/unicode_atoms/OTP-14285:
  compiler: Handle (bad) Unicode parse transform module names
  kernel: Improve handling of Unicode filenames
  stdlib: Handle Unicode atoms in ms_transform
  stdlib: Improve Unicode handling of the Erlang parser
  stdlib: Handle unknown compiler options with Unicode
  stdlib: Handle Unicode macro names
  stdlib: Correct Unicode handling in escript
  dialyzer: Improve handling of Unicode
  parsetools: Improve handling of Unicode atoms
  stdlib: Handle Unicode atoms when formatting stacktraces
  stdlib: Add more checks of module names to the linter
  stdlib: Handle Unicode atoms better in io_lib_format
  stdlib: Handle Unicode atoms in c.erl

1 files changed, 7 insertions, 2 deletions

diff --git a/lib/stdlib/src/proc_lib.erl b/lib/stdlib/src/proc_lib.erl
index 3fa54cd0d5..9ce8e7d60e 100644
--- a/lib/stdlib/src/proc_lib.erl
+++ b/lib/stdlib/src/proc_lib.erl
@@ -805,16 +805,21 @@ format_exception(Class, Reason, StackTrace, {Enc,_}=Extra) ->
     [EI, lib:format_exception(1+length(EI), Class, Reason, 
                               StackTrace, StackFun, PF, Enc), "\n"].
 
-format_mfa(Indent, {M,F,Args}=StartF, Extra) ->
+format_mfa(Indent, {M,F,Args}=StartF, {Enc,_}=Extra) ->
     try
 	A = length(Args),
-	[Indent,"initial call: ",atom_to_list(M),$:,atom_to_list(F),$/,
+	[Indent,"initial call: ",atom_to_list(M),$:,to_string(F, Enc),$/,
 	 integer_to_list(A),"\n"]
     catch
 	error:_ ->
 	    format_tag(Indent, initial_call, StartF, Extra)
     end.
 
+to_string(A, latin1) ->
+    io_lib:write_atom_as_latin1(A);
+to_string(A, _) ->
+    io_lib:write_atom(A).
+
 pp_fun({Enc,Depth}) ->
     {Letter,Tl} = case Depth of
 		      unlimited -> {"p",[]};