Merge branch 'siri/unicode-in-release-handling/OTP-14463' into maint

* siri/unicode-in-release-handling/OTP-14463:
  [sasl] Improve handling of unicode strings and atoms
  [reltool] Improve handling of unicode strings and atoms

21 files changed, 394 insertions, 81 deletions

diff --git a/lib/reltool/src/reltool.erl b/lib/reltool/src/reltool.erl
index f6ce5578bc..feb6925044 100644
--- a/lib/reltool/src/reltool.erl
+++ b/lib/reltool/src/reltool.erl
@@ -80,7 +80,7 @@ get_server(WinPid) ->
         {ok, _ServerPid} = OK ->
             OK;
         {error, Reason} ->
-            {error, lists:flatten(io_lib:format("~p", [Reason]))}
+            {error, lists:flatten(io_lib:format("~tp", [Reason]))}
     end.
 
 %% Stop a server or window process
@@ -93,7 +93,7 @@ stop(Pid) when is_pid(Pid) ->
         {'DOWN', Ref, _, _, shutdown} ->
             ok;
         {'DOWN', Ref, _, _, Reason} ->
-            {error, lists:flatten(io_lib:format("~p", [Reason]))}
+            {error, lists:flatten(io_lib:format("~tp", [Reason]))}
     end.
 
 %% Internal library function
diff --git a/lib/reltool/src/reltool.hrl b/lib/reltool/src/reltool.hrl
index 8b4898570b..9c8aae6b7e 100644
--- a/lib/reltool/src/reltool.hrl
+++ b/lib/reltool/src/reltool.hrl
@@ -119,7 +119,7 @@
                           | {archive, base_file(), [archive_opt()], [target_spec()]}
                           | {copy_file, base_file()}
                           | {copy_file, base_file(), top_file()}
-                          | {write_file, base_file(), iolist()}
+                          | {write_file, base_file(), binary()}
                           | {strip_beam_file, base_file()}.
 -type target_dir()       :: dir().
 -type incl_defaults()    :: boolean().
diff --git a/lib/reltool/src/reltool_app_win.erl b/lib/reltool/src/reltool_app_win.erl
index 468ba297bb..663144861f 100644
--- a/lib/reltool/src/reltool_app_win.erl
+++ b/lib/reltool/src/reltool_app_win.erl
@@ -174,7 +174,7 @@ loop(#state{xref_pid = Xref, common = C, app = App} = S) ->
 						    S#state.mod_wins)},
             ?MODULE:loop(S2);
         Msg ->
-            error_logger:format("~w~w got unexpected message:\n\t~p\n",
+            error_logger:format("~w~w got unexpected message:\n\t~tp\n",
                                 [?MODULE, self(), Msg]),
             ?MODULE:loop(S)
     end.
@@ -182,7 +182,7 @@ loop(#state{xref_pid = Xref, common = C, app = App} = S) ->
 exit_warning({'EXIT', _Pid, shutdown}) ->
     ok;
 exit_warning({'EXIT', _Pid, _Reason} = Msg) ->
-    error_logger:format("~w~w got unexpected message:\n\t~p\n",
+    error_logger:format("~w~w got unexpected message:\n\t~tp\n",
 			[?MODULE, self(), Msg]).
 
 create_window(#state{app = App} = S) ->
@@ -629,7 +629,7 @@ handle_event(#state{sys = Sys, app = App} = S, Wx) ->
 	    handle_mod_button(S, Items, Action);
         _ ->
             error_logger:format("~w~w got unexpected app event from "
-				"wx:\n\t~p\n",
+				"wx:\n\t~tp\n",
                                 [?MODULE, self(), Wx]),
             S
     end.
@@ -676,7 +676,7 @@ move_mod(App, {_ItemNo, ModStr}, Action) ->
 		undefined;
 	    _ ->
 		error_logger:format("~w~w got unexpected mod "
-				    "button event: ~w\n\t ~p\n",
+				    "button event: ~w\n\t ~tp\n",
 				    [?MODULE, self(), ModName, Action]),
 		M#mod.incl_cond
 	end,
diff --git a/lib/reltool/src/reltool_fgraph_win.erl b/lib/reltool/src/reltool_fgraph_win.erl
index 915330794c..a10a2281db 100644
--- a/lib/reltool/src/reltool_fgraph_win.erl
+++ b/lib/reltool/src/reltool_fgraph_win.erl
@@ -526,7 +526,7 @@ loop(S, G) ->
 	    exit(Reason);
 
         Other ->
-            error_logger:format("~w~w got unexpected message:\n\t~p\n",
+            error_logger:format("~w~w got unexpected message:\n\t~tp\n",
                                 [?MODULE, self(), Other]),
             loop(S, G)
     end.
diff --git a/lib/reltool/src/reltool_mod_win.erl b/lib/reltool/src/reltool_mod_win.erl
index 8cd63bdda1..2d56d74563 100644
--- a/lib/reltool/src/reltool_mod_win.erl
+++ b/lib/reltool/src/reltool_mod_win.erl
@@ -171,7 +171,7 @@ loop(#state{xref_pid = Xref, common = C, mod = Mod} = S) ->
 		    S2 = handle_event(S, Wx),
 		    ?MODULE:loop(S2);
 		_ ->
-		    error_logger:format("~w~w got unexpected message:\n\t~p\n",
+		    error_logger:format("~w~w got unexpected message:\n\t~tp\n",
 					[?MODULE, self(), Msg]),
 		    ?MODULE:loop(S)
 	    end
@@ -487,7 +487,7 @@ handle_event(#state{xref_pid = Xref} = S, Wx) ->
 	    S;
 	_ ->
             error_logger:format("~w~w got unexpected mod event from "
-				"wx:\n\t~p\n",
+				"wx:\n\t~tp\n",
                                 [?MODULE, self(), Wx]),
             S
     end.
@@ -667,7 +667,7 @@ goto_function(S, Editor) ->
 	    wxStyledTextCtrl:setSelection(Editor, Left2, Right2),
 	    Text = wxStyledTextCtrl:getSelectedText(Editor),
 	    S2 = add_pos_to_history(S, CurrentPos),
-	    do_goto_function(S2, string:tokens(Text, ":"));
+	    do_goto_function(S2, string:lexemes(Text, ":"));
 	_ ->
 	    %% No function call
 	    wxStyledTextCtrl:hideSelection(Editor, false),
diff --git a/lib/reltool/src/reltool_server.erl b/lib/reltool/src/reltool_server.erl
index 89e90670cf..853191c696 100644
--- a/lib/reltool/src/reltool_server.erl
+++ b/lib/reltool/src/reltool_server.erl
@@ -225,12 +225,12 @@ parse_options([{Key, Val} | KeyVals], S, C, Sys) ->
             Sys2 = read_config(Sys, {sys, Val}),
             parse_options(KeyVals, S, C, Sys2);
         _ ->
-	    reltool_utils:throw_error("Illegal option: ~p", [{Key, Val}])
+	    reltool_utils:throw_error("Illegal option: ~tp", [{Key, Val}])
     end;
 parse_options([], S, C, Sys) ->
     S#state{common = C, sys = Sys};
 parse_options(KeyVals, _S, _C, _Sys) ->
-    reltool_utils:throw_error("Illegal option: ~p", [KeyVals]).
+    reltool_utils:throw_error("Illegal option: ~tp", [KeyVals]).
 
 loop(#state{sys = Sys} = S) ->
     receive
@@ -400,12 +400,12 @@ loop(#state{sys = Sys} = S) ->
         {'EXIT', Pid, Reason} when Pid =:= S#state.parent_pid ->
             exit(Reason);
         {call, ReplyTo, Ref, Msg} when is_pid(ReplyTo), is_reference(Ref) ->
-            error_logger:format("~w~w got unexpected call:\n\t~p\n",
+            error_logger:format("~w~w got unexpected call:\n\t~tp\n",
                                 [?MODULE, self(), Msg]),
             reltool_utils:reply(ReplyTo, Ref, {error, {invalid_call, Msg}}),
             ?MODULE:loop(S);
         Msg ->
-            error_logger:format("~w~w got unexpected message:\n\t~p\n",
+            error_logger:format("~w~w got unexpected message:\n\t~tp\n",
                                 [?MODULE, self(), Msg]),
             ?MODULE:loop(S)
     end.
@@ -1232,7 +1232,7 @@ parse_app_info(File, [{Key, Val} | KeyVals], AI, Status) ->
 			   Status);
         _ ->
 	    Status2 =
-		reltool_utils:add_warning("Unexpected item ~p in app file ~tp.",
+		reltool_utils:add_warning("Unexpected item ~tp in app file ~tp.",
 					  [Key,File],
 					  Status),
 	    parse_app_info(File, KeyVals, AI, Status2)
@@ -1417,9 +1417,12 @@ shrink_app(A) ->
 
 do_save_config(S, Filename, InclDef, InclDeriv) ->
     {ok, Config} = do_get_config(S, InclDef, InclDeriv),
-    IoList = io_lib:format("%% config generated at ~w ~w\n~p.\n\n",
-                           [date(), time(), Config]),
-    file:write_file(Filename, IoList).
+    IoList = io_lib:format("%% ~s\n"
+                           "%% config generated at ~w ~w\n"
+                           "~tp.\n\n",
+                           [epp:encoding_to_string(utf8),date(), time(), Config]),
+    Bin = unicode:characters_to_binary(IoList),
+    file:write_file(Filename, Bin).
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
@@ -1455,7 +1458,7 @@ read_config(OldSys, {sys, KeyVals}) ->
 	      [NewSys2#sys.boot_rel])
     end;
 read_config(_OldSys, BadConfig) ->
-    reltool_utils:throw_error("Illegal content: ~p", [BadConfig]).
+    reltool_utils:throw_error("Illegal content: ~tp", [BadConfig]).
 
 decode(#sys{apps = Apps} = Sys, [{erts = Name, AppKeyVals} | SysKeyVals])
   when is_atom(Name), is_list(AppKeyVals) ->
@@ -1565,7 +1568,7 @@ decode(#sys{} = Sys, [{Key, Val} | KeyVals]) ->
             debug_info when Val =:= keep; Val =:= strip ->
                 Sys#sys{debug_info = Val};
             _ ->
-		reltool_utils:throw_error("Illegal option: ~p", [{Key, Val}])
+		reltool_utils:throw_error("Illegal option: ~tp", [{Key, Val}])
         end,
     decode(Sys3, KeyVals);
 decode(#app{} = App, [{Key, Val} | KeyVals]) ->
@@ -1620,14 +1623,14 @@ decode(#app{} = App, [{Key, Val} | KeyVals]) ->
 				active_dir = Dir,
 				sorted_dirs = [Dir]};
 		    false ->
-			reltool_utils:throw_error("Illegal lib dir for ~w: ~p",
+			reltool_utils:throw_error("Illegal lib dir for ~w: ~tp",
 						  [App#app.name, Val])
 		end;
 	    SelectVsn when SelectVsn=:=vsn; SelectVsn=:=lib_dir ->
 		reltool_utils:throw_error("Mutual exclusive options "
 					  "'vsn' and 'lib_dir'",[]);
             _ ->
-		reltool_utils:throw_error("Illegal option: ~p", [{Key, Val}])
+		reltool_utils:throw_error("Illegal option: ~tp", [{Key, Val}])
         end,
     decode(App2, KeyVals);
 decode(#app{mods = Mods} = App, [{mod, Name, ModKeyVals} | AppKeyVals]) ->
@@ -1641,7 +1644,7 @@ decode(#mod{} = Mod, [{Key, Val} | KeyVals]) ->
             debug_info when Val =:= keep; Val =:= strip ->
                 Mod#mod{debug_info = Val};
             _ ->
-		reltool_utils:throw_error("Illegal option: ~p", [{Key, Val}])
+		reltool_utils:throw_error("Illegal option: ~tp", [{Key, Val}])
         end,
     decode(Mod2, KeyVals);
 decode(#rel{rel_apps = RelApps} = Rel, [RelApp | KeyVals]) ->
@@ -1666,12 +1669,12 @@ decode(#rel{rel_apps = RelApps} = Rel, [RelApp | KeyVals]) ->
 	true ->
             decode(Rel#rel{rel_apps = RelApps ++ [RA]}, KeyVals);
         false ->
-	    reltool_utils:throw_error("Illegal option: ~p", [RelApp])
+	    reltool_utils:throw_error("Illegal option: ~tp", [RelApp])
     end;
 decode(Acc, []) ->
     Acc;
 decode(_Acc, KeyVal) ->
-    reltool_utils:throw_error("Illegal option: ~p", [KeyVal]).
+    reltool_utils:throw_error("Illegal option: ~tp", [KeyVal]).
 
 is_type(Type) ->
     case Type of
@@ -1866,7 +1869,7 @@ escripts_to_apps([Escript | Escripts], Apps, Status) ->
 	    {ok, AF} ->
 		AF;
 	    {error, Reason1} ->
-		reltool_utils:throw_error("Illegal escript ~tp: ~p",
+		reltool_utils:throw_error("Illegal escript ~tp: ~tp",
 					  [Escript,Reason1])
 	end,
 
@@ -1950,7 +1953,7 @@ escripts_to_apps([Escript | Escripts], Apps, Status) ->
 				      Status2),
 	    escripts_to_apps(Escripts, Apps2, Status3);
 	{error, Reason2} ->
-	    reltool_utils:throw_error("Illegal escript ~tp: ~p",
+	    reltool_utils:throw_error("Illegal escript ~tp: ~tp",
 				      [Escript,Reason2])
     end;
 escripts_to_apps([], Apps, Status) ->
@@ -2013,7 +2016,7 @@ init_escript_app(AppName, EscriptAppName, Dir, Info, Mods, Apps, Status) ->
     case lists:keymember(AppName, #app.name, Apps) of
         true ->
 	    reltool_utils:throw_error(
-	      "~w: Application name clash. Escript ~tp contains application ~tp.",
+	      "~w: Application name clash. Escript ~tp contains application ~w.",
 	      [AppName,Dir,AppName]);
         false ->
             {App2, Status}
diff --git a/lib/reltool/src/reltool_sys_win.erl b/lib/reltool/src/reltool_sys_win.erl
index ba0d90ef5f..92df270752 100644
--- a/lib/reltool/src/reltool_sys_win.erl
+++ b/lib/reltool/src/reltool_sys_win.erl
@@ -136,7 +136,7 @@ init(Options) ->
 	do_init(Options)
     catch
 	error:Reason ->
-	    io:format("~p: ~p~n",[Reason, erlang:get_stacktrace()]),
+	    io:format("~tp: ~tp~n",[Reason, erlang:get_stacktrace()]),
 	    exit({Reason, erlang:get_stacktrace()})
     end.
 
@@ -182,7 +182,7 @@ do_init([{safe_config, Safe}, {parent, Parent} | Options]) ->
     end.
 
 restart_server_safe_config(true,Parent,Reason) ->
-    io:format("~w(~w): <ERROR> ~p\n", [?MODULE, ?LINE, Reason]),
+    io:format("~w(~w): <ERROR> ~tp\n", [?MODULE, ?LINE, Reason]),
     proc_lib:init_ack(Parent, {error,Reason});
 restart_server_safe_config(false,Parent,Reason) ->
     wx:new(),
@@ -199,7 +199,7 @@ restart_server_safe_config(false,Parent,Reason) ->
 	?wxID_OK ->
 	    do_init([{safe_config,true},{parent,Parent},?safe_config]);
 	?wxID_CANCEL ->
-	    io:format("~w(~w): <ERROR> ~p\n", [?MODULE, ?LINE, Reason]),
+	    io:format("~w(~w): <ERROR> ~tp\n", [?MODULE, ?LINE, Reason]),
 	    proc_lib:init_ack(Parent,{error,Reason})
     end.
 
@@ -251,7 +251,7 @@ loop(S) ->
 				    ?MODULE:loop(S#state{warning_wins = WWs2});
 				false ->
 				    error_logger:format("~w~w got unexpected "
-							"message:\n\t~p\n",
+							"message:\n\t~tp\n",
 							[?MODULE, self(), Msg]),
 				    ?MODULE:loop(S)
 			    end
@@ -292,7 +292,7 @@ loop(S) ->
 					   S#state.app_wins),
             ?MODULE:loop(S#state{fgraph_wins = FWs, app_wins = AWs});
         Msg ->
-            error_logger:format("~w~w got unexpected message:\n\t~p\n",
+            error_logger:format("~w~w got unexpected message:\n\t~tp\n",
                                 [?MODULE, self(), Msg]),
             ?MODULE:loop(S)
     end.
@@ -316,7 +316,7 @@ handle_child_exit({'EXIT', Pid, _Reason} = Exit, FWs, AWs) ->
 msg_warning({'EXIT', _Pid, shutdown}, Type) when Type =/= unknown ->
     ok;
 msg_warning(Exit, Type) ->
-    error_logger:format("~w~w got unexpected message (~w):\n\t~p\n",
+    error_logger:format("~w~w got unexpected message (~w):\n\t~tp\n",
                         [?MODULE, self(), Type, Exit]).
 
 create_window(S) ->
@@ -1163,12 +1163,12 @@ handle_system_event(#state{sys = Sys} = S,
     do_set_sys(S#state{sys = Sys2});
 handle_system_event(S, Event, ObjRef, UserData) ->
     error_logger:format("~w~w got unexpected wx sys event to ~p "
-			"with user data: ~p\n\t ~p\n",
+			"with user data: ~tp\n\t ~tp\n",
                         [?MODULE, self(), ObjRef, UserData, Event]),
     S.
 
 handle_release_event(S, _Event, _ObjRef, UserData) ->
-    io:format("Release data: ~p\n", [UserData]),
+    io:format("Release data: ~tp\n", [UserData]),
     S.
 
 handle_source_event(S,
@@ -1225,7 +1225,7 @@ handle_app_event(S,
     handle_app_button(S, Items, Action);
 handle_app_event(S, Event, ObjRef, UserData) ->
     error_logger:format("~w~w got unexpected wx app event to "
-			"~p with user data: ~p\n\t ~p\n",
+			"~p with user data: ~tp\n\t ~tp\n",
                         [?MODULE, self(), ObjRef, UserData, Event]),
     S.
 
@@ -1269,7 +1269,7 @@ move_app(S, {_ItemNo, AppBase}, Action) ->
                 undefined;
             _ ->
                 error_logger:format("~w~w got unexpected app "
-				    "button event: ~p ~p\n",
+				    "button event: ~tp ~tp\n",
                                     [?MODULE, self(), Action, AppBase]),
                 OldApp#app.incl_cond
         end,
@@ -1543,7 +1543,7 @@ check_and_refresh(S, Status) ->
             display_message(Reason, ?wxICON_ERROR),
 	    false;
         {error, Reason} ->
-            Msg = lists:flatten(io_lib:format("Error:\n\n~p\n", [Reason])),
+            Msg = lists:flatten(io_lib:format("Error:\n\n~tp\n", [Reason])),
             display_message(Msg, ?wxICON_ERROR),
 	    false
     end,
diff --git a/lib/reltool/src/reltool_target.erl b/lib/reltool/src/reltool_target.erl
index 1615a3e9b7..1b1461178e 100644
--- a/lib/reltool/src/reltool_target.erl
+++ b/lib/reltool/src/reltool_target.erl
@@ -787,16 +787,20 @@ do_spec_rel_files(#rel{name = RelName} = Rel,  Sys) ->
     {ok, BootBin} = gen_boot(Script),
     Date = date(),
     Time = time(),
-    RelIoList = io_lib:format("%% rel generated at ~w ~w\n~p.\n\n",
+    RelIoList = io_lib:format("%% rel generated at ~w ~w\n~tp.\n\n",
                               [Date, Time, GenRel]),
-    ScriptIoList = io_lib:format("%% script generated at ~w ~w\n~p.\n\n",
+    ScriptIoList = io_lib:format("%% script generated at ~w ~w\n~tp.\n\n",
                                  [Date, Time, Script]),
     [
-     {write_file, RelFile, RelIoList},
-     {write_file, ScriptFile, ScriptIoList},
+     {write_file, RelFile, to_utf8_bin_with_enc_comment(RelIoList)},
+     {write_file, ScriptFile, to_utf8_bin_with_enc_comment(ScriptIoList)},
      {write_file, BootFile, BootBin}
     ].
 
+to_utf8_bin_with_enc_comment(IoList) when is_list(IoList) ->
+    unicode:characters_to_binary("%% " ++ epp:encoding_to_string(utf8) ++ "\n"
+                                 ++ IoList).
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %% Generate a complete target system
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -1001,7 +1005,8 @@ spec_start_file(#sys{boot_rel = BootRelName,
     {value, Erts} = lists:keysearch(erts, #app.name, Apps),
     {value, BootRel} = lists:keysearch(BootRelName, #rel.name, Rels),
     Data = Erts#app.vsn ++ " " ++ BootRel#rel.vsn ++ "\n",
-    {BootRel#rel.vsn, {write_file, "start_erl.data", Data}}.
+    {BootRel#rel.vsn, {write_file, "start_erl.data",
+                       unicode:characters_to_binary(Data)}}.
 
 lookup_spec(Prefix, Specs) ->
     lists:filter(fun(S) -> lists:prefix(Prefix, element(2, S)) end, Specs).
@@ -1183,18 +1188,18 @@ spec_app_file(#app{name = Name,
                                                    Info#app_info.modules)],
             App2 = App#app{info = Info#app_info{modules = ModNames}},
             Contents = gen_app(App2),
-            AppIoList = io_lib:format("%% app generated at ~w ~w\n~p.\n\n",
+            AppIoList = io_lib:format("%% app generated at ~w ~w\n~tp.\n\n",
                                       [date(), time(), Contents]),
-            [{write_file, AppFilename, AppIoList}];
+            [{write_file, AppFilename, to_utf8_bin_with_enc_comment(AppIoList)}];
         all ->
             %% Include all included modules
             %% Generate new file
             ModNames = [M#mod.name || M <- Mods, M#mod.is_included],
             App2 = App#app{info = Info#app_info{modules = ModNames}},
             Contents = gen_app(App2),
-            AppIoList = io_lib:format("%% app generated at ~w ~w\n~p.\n\n",
+            AppIoList = io_lib:format("%% app generated at ~w ~w\n~tp.\n\n",
                                       [date(), time(), Contents]),
-            [{write_file, AppFilename, AppIoList}]
+            [{write_file, AppFilename, to_utf8_bin_with_enc_comment(AppIoList)}]
 
     end.
 
@@ -1285,7 +1290,7 @@ do_eval_spec({archive, Archive, Options, Files},
         {ok, _} ->
             ok;
         {error, Reason} ->
-            reltool_utils:throw_error("create archive ~ts failed: ~p",
+            reltool_utils:throw_error("create archive ~ts failed: ~tp",
 				      [ArchiveFile, Reason])
     end;
 do_eval_spec({copy_file, File}, _OrigSourceDir, SourceDir, TargetDir) ->
@@ -1299,12 +1304,12 @@ do_eval_spec({copy_file, File, OldFile},
     SourceFile = filename:join([OrigSourceDir, OldFile]),
     TargetFile = filename:join([TargetDir, File]),
     reltool_utils:copy_file(SourceFile, TargetFile);
-do_eval_spec({write_file, File, IoList},
+do_eval_spec({write_file, File, Bin},
 	     _OrigSourceDir,
 	     _SourceDir,
 	     TargetDir) ->
     TargetFile = filename:join([TargetDir, File]),
-    reltool_utils:write_file(TargetFile, IoList);
+    reltool_utils:write_file(TargetFile, Bin);
 do_eval_spec({strip_beam, File}, _OrigSourceDir, SourceDir, TargetDir) ->
     SourceFile = filename:join([SourceDir, File]),
     TargetFile = filename:join([TargetDir, File]),
@@ -1336,7 +1341,7 @@ cleanup_spec({copy_file, File}, TargetDir) ->
 cleanup_spec({copy_file, NewFile, _OldFile}, TargetDir) ->
     TargetFile = filename:join([TargetDir, NewFile]),
     file:delete(TargetFile);
-cleanup_spec({write_file, File, _IoList}, TargetDir) ->
+cleanup_spec({write_file, File, _}, TargetDir) ->
     TargetFile = filename:join([TargetDir, File]),
     file:delete(TargetFile);
 cleanup_spec({strip_beam, File}, TargetDir) ->
@@ -1406,7 +1411,7 @@ do_filter_spec(Path,
 	       ExclRegexps) ->
     Path2 = opt_join(Path, NewFile),
     match(Path2, InclRegexps, ExclRegexps);
-do_filter_spec(Path, {write_file, File, _IoList}, InclRegexps, ExclRegexps) ->
+do_filter_spec(Path, {write_file, File, _}, InclRegexps, ExclRegexps) ->
     Path2 = opt_join(Path, File),
     match(Path2, InclRegexps, ExclRegexps);
 do_filter_spec(Path, {strip_beam, File}, InclRegexps, ExclRegexps) ->
@@ -1448,7 +1453,7 @@ do_install(RelName, TargetDir) ->
     RelDir = filename:join([TargetDir2, "releases"]),
     DataFile = filename:join([RelDir, "start_erl.data"]),
     Bin = reltool_utils:read_file(DataFile),
-    case string:tokens(binary_to_list(Bin), " \n") of
+    case string:lexemes(unicode:characters_to_list(Bin), " \n") of
         [ErlVsn, RelVsn | _] ->
             ErtsBinDir = filename:join([TargetDir2, "erts-" ++ ErlVsn, "bin"]),
             BinDir = filename:join([TargetDir2, "bin"]),
@@ -1501,8 +1506,8 @@ subst_src_script(Script, SrcDir, DestDir, Vars, Opts) ->
 
 subst_file(Src, Dest, Vars, Opts) ->
     Bin = reltool_utils:read_file(Src),
-    Chars = subst(binary_to_list(Bin), Vars),
-    reltool_utils:write_file(Dest, Chars),
+    Chars = subst(unicode:characters_to_list(Bin), Vars),
+    reltool_utils:write_file(Dest, unicode:characters_to_binary(Chars)),
     case lists:member(preserve, Opts) of
         true ->
             FileInfo = reltool_utils:read_file_info(Src),
diff --git a/lib/reltool/src/reltool_utils.erl b/lib/reltool/src/reltool_utils.erl
index 60edc9f3ca..3891b5ae4d 100644
--- a/lib/reltool/src/reltool_utils.erl
+++ b/lib/reltool/src/reltool_utils.erl
@@ -55,7 +55,7 @@ root_dir() ->
     code:root_dir().
 
 erl_libs() ->
-    string:tokens(os:getenv("ERL_LIBS", ""), ":;").
+    string:lexemes(os:getenv("ERL_LIBS", ""), ":;").
 
 lib_dirs(Dir) ->
     case erl_prim_loader:list_dir(Dir) of
@@ -286,7 +286,7 @@ split_app_dir(Dir) ->
     {Name, Vsn} = split_app_name(Base),
     Vsn2 =
 	try
-	    [list_to_integer(N) || N <- string:tokens(Vsn, ".")]
+	    [list_to_integer(N) || N <- string:lexemes(Vsn, ".")]
 	catch
 	    _:_ ->
 		Vsn
@@ -427,7 +427,7 @@ scroll_size(ObjRef) ->
 safe_keysearch(Key, Pos, List, Mod, Line) ->
     case lists:keysearch(Key, Pos, List) of
         false ->
-            io:format("~w(~w): lists:keysearch(~p, ~w, ~p) -> false\n",
+            io:format("~w(~w): lists:keysearch(~tp, ~w, ~tp) -> false\n",
                       [Mod, Line, Key, Pos, List]),
             erlang:error({Mod, Line, lists, keysearch, [Key, Pos, List]});
         {value, Val} ->
@@ -498,8 +498,8 @@ read_file(File) ->
             throw_error("read file ~ts: ~ts", [File, Text])
     end.
 
-write_file(File, IoList) ->
-    case file:write_file(File, IoList) of
+write_file(File, Bin) ->
+    case file:write_file(File, Bin) of
         ok ->
 	    ok;
         {error, Reason} ->
@@ -601,7 +601,7 @@ do_decode_regexps(Key, [Regexp | Regexps], Acc) ->
 			      Regexps,
 			      [#regexp{source = Regexp, compiled = MP} | Acc]);
         _ ->
-            Text = lists:flatten(io_lib:format("~p", [{Key, Regexp}])),
+            Text = lists:flatten(io_lib:format("~tp", [{Key, Regexp}])),
             throw({error, "Illegal option: " ++ Text})
     end;
 do_decode_regexps(_Key, [], Acc) ->
diff --git a/lib/sasl/src/release_handler.erl b/lib/sasl/src/release_handler.erl
index 1f3c6877d5..d0a7c7332d 100644
--- a/lib/sasl/src/release_handler.erl
+++ b/lib/sasl/src/release_handler.erl
@@ -1143,8 +1143,9 @@ new_emulator_make_hybrid_config(CurrentVsn,ToVsn,TmpVsn,RelDir,Masters) ->
     Config2 = replace_config(stdlib,Config1,Stdlib),
     Config3 = replace_config(sasl,Config2,Sasl),
 
-    ConfigStr = io_lib:format("~p.~n",[Config3]),
-    write_file(TmpFile,ConfigStr,Masters).
+    ConfigStr = io_lib:format("%% ~s~n~tp.~n",
+                              [epp:encoding_to_string(utf8),Config3]),
+    write_file(TmpFile,unicode:characters_to_binary(ConfigStr),Masters).
 
 %% Take the configuration for application App from the new config and
 %% insert in the old config.
@@ -1874,9 +1875,10 @@ write_releases_1(Dir, NewReleases, Masters) ->
     write_releases_m(Dir, NewReleases, Masters).
 
 do_write_release(Dir, RELEASES, NewReleases) ->
-    case file:open(filename:join(Dir, RELEASES), [write]) of
+    case file:open(filename:join(Dir, RELEASES), [write,{encoding,utf8}]) of
 	{ok, Fd} ->
-	    ok = io:format(Fd, "~p.~n", [NewReleases]),
+	    ok = io:format(Fd, "%% ~s~n~tp.~n",
+                           [epp:encoding_to_string(utf8),NewReleases]),
 	    ok = file:close(Fd);
 	{error, Reason} ->
 	    {error, Reason}
diff --git a/lib/sasl/src/systools_make.erl b/lib/sasl/src/systools_make.erl
index b1523dcbb7..391b1fb5cc 100644
--- a/lib/sasl/src/systools_make.erl
+++ b/lib/sasl/src/systools_make.erl
@@ -1152,10 +1152,10 @@ generate_script(Output, Release, Appls, Flags) ->
 	     },
 
     ScriptFile = Output ++ ".script",
-    case file:open(ScriptFile, [write]) of
+    case file:open(ScriptFile, [write,{encoding,utf8}]) of
 	{ok, Fd} ->
-	    io:format(Fd, "%% script generated at ~w ~w\n~p.\n",
-		      [date(), time(), Script]),
+	    io:format(Fd, "%% ~s\n%% script generated at ~w ~w\n~tp.\n",
+		      [epp:encoding_to_string(utf8), date(), time(), Script]),
 	    case file:close(Fd) of
 		ok ->
 		    BootFile = Output ++ ".boot",
diff --git a/lib/sasl/src/systools_relup.erl b/lib/sasl/src/systools_relup.erl
index 706ae7d631..e836d57670 100644
--- a/lib/sasl/src/systools_relup.erl
+++ b/lib/sasl/src/systools_relup.erl
@@ -535,9 +535,9 @@ to_list(X) when is_list(X) -> X.
 write_relup_file(Relup, Opts) ->
     Filename = filename:join(filename:absname(get_opt(outdir,Opts)),
                              "relup"),
-    case file:open(Filename, [write]) of
+    case file:open(Filename, [write,{encoding,utf8}]) of
         {ok, Fd} ->
-            io:format(Fd, "~p.~n", [Relup]),
+            io:format(Fd, "%% ~s~n~tp.~n", [epp:encoding_to_string(utf8),Relup]),
             case file:close(Fd) of
                 ok -> ok;
                 {error,Reason} ->
diff --git a/lib/sasl/test/release_handler_SUITE.erl b/lib/sasl/test/release_handler_SUITE.erl
index 7093158502..50932e89e4 100644
--- a/lib/sasl/test/release_handler_SUITE.erl
+++ b/lib/sasl/test/release_handler_SUITE.erl
@@ -66,7 +66,7 @@ cases() ->
      supervisor_which_children_timeout,
      release_handler_which_releases, install_release_syntax_check,
      upgrade_supervisor, upgrade_supervisor_fail, otp_9864,
-     otp_10463_upgrade_script_regexp, no_dot_erlang].
+     otp_10463_upgrade_script_regexp, no_dot_erlang, unicode_upgrade].
 
 groups() ->
     [{release,[],
@@ -1875,6 +1875,86 @@ no_dot_erlang(Conf) ->
 	ok
     end.
 
+%%%-----------------------------------------------------------------
+%%% Test unicode handling. Make sure that release name, application
+%%% description, and application environment variables may contain
+%%% unicode characters.
+unicode_upgrade(Conf) ->
+    %% Set some paths
+    DataDir = ?config(data_dir, Conf),
+    PrivDir = priv_dir(Conf),
+    Dir = filename:join(PrivDir,"unicode"),
+    LibDir0 = filename:join(DataDir, "unicode"),
+    LibDir =
+        case {file:native_name_encoding(),os:type()} of
+            {utf8,{Os,_}} when Os =/= win32 ->
+                LD = filename:join(DataDir,"unicode_αβ"),
+                file:make_symlink("unicode",LD),
+                LD;
+            _ ->
+                LibDir0
+        end,
+
+    %% Create the releases
+    RelName = "unicode_rel_αβ",
+    Rel1 = create_and_install_fake_first_release(Dir,{RelName,"1"},
+						 [{u,"1.0",LibDir}]),
+    Rel2 = create_fake_upgrade_release(Dir,
+				       {RelName,"2"},
+				       [{u,"1.1",LibDir}],
+				       {[Rel1],[Rel1],[LibDir]}),
+    Rel1Dir = filename:dirname(Rel1),
+    Rel2Dir = filename:dirname(Rel2),
+
+    %% Start a slave node
+    {ok, Node} = t_start_node(unicode_upgrade, Rel1,
+                              filename:join(Rel1Dir,"sys.config"), "+pc unicode"),
+
+    %% Check
+    Dir1 = filename:join([LibDir, "u-1.0"]),
+    Dir1 = rpc:call(Node, code, lib_dir, [u]),
+    UBeam1 = filename:join([Dir1,"ebin","u.beam"]),
+    UBeam1 = rpc:call(Node,code,which,[u]),
+    {RelName,"1"} = rpc:call(Node,init,script_id,[]),
+    {Env,state} = rpc:call(Node,u,u,[]),
+    'val_αβ' = proplists:get_value('key_αβ',Env),
+    [{RelName,"1",_,permanent}|_] =
+        rpc:call(Node,release_handler,which_releases,[]),
+    {ok,ReleasesDir} = rpc:call(Node,application,get_env,[sasl,releases_dir]),
+    {ok,[[{release,RelName,"1",_,_,permanent}|_]]} =
+        file:consult(filename:join(ReleasesDir,"RELEASES")),
+
+    %% Install second release
+    {ok, RelVsn2} =
+	rpc:call(Node, release_handler, set_unpacked,
+		 [Rel2++".rel", [{u,"1.1",LibDir}]]),
+    ok = rpc:call(Node, release_handler, install_file,
+		  [RelVsn2, filename:join(Rel2Dir, "relup")]),
+    ok = rpc:call(Node, release_handler, install_file,
+		  [RelVsn2, filename:join(Rel2Dir, "start.boot")]),
+    ok = rpc:call(Node, release_handler, install_file,
+		  [RelVsn2, filename:join(Rel2Dir, "sys.config")]),
+
+    {ok, _RelVsn1, []} =
+	rpc:call(Node, release_handler, install_release, [RelVsn2]),
+
+    %% And check
+    Dir2 = filename:join([LibDir, "u-1.1"]),
+    Dir2 = rpc:call(Node, code, lib_dir, [u]),
+    UBeam2 = filename:join([Dir2,"ebin","u.beam"]),
+    {file,UBeam2} = rpc:call(Node,code,is_loaded,[u]),
+    {RelName,"1"} = rpc:call(Node,init,script_id,[]),
+    {Env,{state,'αβ'}} = rpc:call(Node,u,u,[]),
+    [{RelName,"2",_,current}|_] =
+        rpc:call(Node,release_handler,which_releases,[]),
+    {ok,ReleasesDir2} = rpc:call(Node,application,get_env,[sasl,releases_dir]),
+    {ok,<<"%% coding: utf-8\n[{release,\"unicode_rel_αβ\",\"2\""/utf8,_/binary>>}=
+        file:read_file(filename:join(ReleasesDir2,"RELEASES")),
+    ok.
+
+unicode_upgrade(cleanup,_Conf) ->
+    stop_node(node_name(unicode_upgrade)).
+
 
 %%%=================================================================
 %%% Misceleaneous functions
@@ -2002,6 +2082,8 @@ are_names_reg_gg(Node, Names, N) ->
 
 
 t_start_node(Name, Boot, SysConfig) ->
+    t_start_node(Name, Boot, SysConfig, "").
+t_start_node(Name, Boot, SysConfig, ArgStr) ->
     Args = 
 	case Boot of
 	    [] -> [];
@@ -2010,8 +2092,9 @@ t_start_node(Name, Boot, SysConfig) ->
 	case SysConfig of
 	    [] -> [];
 	    _ -> " -config " ++ SysConfig
-	end,
-    test_server:start_node(Name, slave, [{args, Args}]).
+	end ++
+        " " ++ ArgStr,
+    test_server:start_node(Name, peer, [{args, Args}]).
 
 stop_node(Node) ->
     ?t:stop_node(Node).
@@ -2460,7 +2543,9 @@ create_rel_file(RelFile,RelName,RelVsn,Erts,ExtraApps) ->
 
 %% Insert a term in a file, which can be read with file:consult/1.
 write_term_file(File,Term) ->
-    ok = file:write_file(File,io_lib:format("~p.~n",[Term])).
+    Str = io_lib:format("%% ~s~n~tp.~n",[epp:encoding_to_string(utf8),Term]),
+    Bin = unicode:characters_to_binary(Str),
+    ok = file:write_file(File,Bin).
     
 
 %% Check that global group info is correct - try again for a maximum of 5 sec
@@ -2719,8 +2804,8 @@ cover_fun(Node,Func) ->
 %% and possibly other applications if they are listed in AppDirs =
 %% [{App,Vsn,LibDir}]
 create_and_install_fake_first_release(Dir,AppDirs) ->
-    %% Create the first release
-    {RelName,RelVsn} = init:script_id(),
+    create_and_install_fake_first_release(Dir,init:script_id(),AppDirs).
+create_and_install_fake_first_release(Dir,{RelName,RelVsn},AppDirs) ->
     {Rel,_} = create_fake_release(Dir,RelName,RelVsn,AppDirs),
     ReleasesDir = filename:join(Dir, "releases"),
     RelDir = filename:dirname(Rel),
@@ -2744,9 +2829,11 @@ create_and_install_fake_first_release(Dir,AppDirs) ->
 %% be upgraded to from the release created by
 %% create_and_install_fake_first_release/2. Unpack first by calls to
 %% release_handler:set_unpacked and release_handler:install_file.
-create_fake_upgrade_release(Dir,RelVsn,AppDirs,{UpFrom,DownTo,ExtraLibs}) ->
-    %% Create a new release
+create_fake_upgrade_release(Dir,RelVsn,AppDirs,UpgrInstr) when not is_tuple(RelVsn) ->
     {RelName,_} = init:script_id(),
+    create_fake_upgrade_release(Dir,{RelName,RelVsn},AppDirs,UpgrInstr);
+create_fake_upgrade_release(Dir,{RelName,RelVsn},AppDirs,{UpFrom,DownTo,ExtraLibs}) ->
+    %% Create a new release
     {Rel,Paths} = create_fake_release(Dir,RelName,RelVsn,AppDirs),
     RelDir = filename:dirname(Rel),
 
diff --git a/lib/sasl/test/release_handler_SUITE_data/Makefile.src b/lib/sasl/test/release_handler_SUITE_data/Makefile.src
index b794aa0e6f..113d3e2290 100644
--- a/lib/sasl/test/release_handler_SUITE_data/Makefile.src
+++ b/lib/sasl/test/release_handler_SUITE_data/Makefile.src
@@ -76,7 +76,13 @@ SUP= \
 	 release_handler_timeouts/dummy-0.1/ebin/dummy_sup.@EMULATOR@ \
 	 release_handler_timeouts/dummy-0.1/ebin/dummy_sup_2.@EMULATOR@
 
-all: $(LIB) $(APP) $(OTP2740) $(C) $(SUP)
+UNICODE= \
+     unicode/u-1.0/ebin/u.@EMULATOR@ \
+     unicode/u-1.0/ebin/u_sup.@EMULATOR@ \
+     unicode/u-1.1/ebin/u.@EMULATOR@ \
+     unicode/u-1.1/ebin/u_sup.@EMULATOR@
+
+all: $(LIB) $(APP) $(OTP2740) $(C) $(SUP) $(UNICODE)
 
 lib/a-1.0/ebin/a.@EMULATOR@: lib/a-1.0/src/a.erl
 	erlc $(EFLAGS) -olib/a-1.0/ebin lib/a-1.0/src/a.erl
@@ -236,3 +242,13 @@ release_handler_timeouts/dummy-0.1/ebin/dummy_sup.@EMULATOR@: release_handler_ti
 	erlc $(EFLAGS) -orelease_handler_timeouts/dummy-0.1/ebin release_handler_timeouts/dummy-0.1/src/dummy_sup.erl
 release_handler_timeouts/dummy-0.1/ebin/dummy_sup_2.@EMULATOR@: release_handler_timeouts/dummy-0.1/src/dummy_sup_2.erl
 	erlc $(EFLAGS) -orelease_handler_timeouts/dummy-0.1/ebin release_handler_timeouts/dummy-0.1/src/dummy_sup_2.erl
+
+unicode/u-1.0/ebin/u.@EMULATOR@: unicode/u-1.0/src/u.erl
+	erlc $(EFLAGS) -ounicode/u-1.0/ebin unicode/u-1.0/src/u.erl
+unicode/u-1.0/ebin/u_sup.@EMULATOR@: unicode/u-1.0/src/u_sup.erl
+	erlc $(EFLAGS) -ounicode/u-1.0/ebin unicode/u-1.0/src/u_sup.erl
+
+unicode/u-1.1/ebin/u.@EMULATOR@: unicode/u-1.1/src/u.erl
+	erlc $(EFLAGS) -ounicode/u-1.1/ebin unicode/u-1.1/src/u.erl
+unicode/u-1.1/ebin/u_sup.@EMULATOR@: unicode/u-1.1/src/u_sup.erl
+	erlc $(EFLAGS) -ounicode/u-1.1/ebin unicode/u-1.1/src/u_sup.erl
diff --git a/lib/sasl/test/release_handler_SUITE_data/unicode/u-1.0/ebin/u.app b/lib/sasl/test/release_handler_SUITE_data/unicode/u-1.0/ebin/u.app
new file mode 100644
index 0000000000..fea4f9992e
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/unicode/u-1.0/ebin/u.app
@@ -0,0 +1,8 @@
+{application, u,
+	     [{description, "This app shall test unicode handling αβ"},
+              {vsn, "1.0"},
+	      {modules, [u, u_sup]},
+	      {registered, [u_sup]},
+	      {applications, [kernel, stdlib]},
+	      {env, [{'key_αβ', 'val_αβ'}]},
+	      {mod, {u_sup, []}}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/unicode/u-1.0/src/u.erl b/lib/sasl/test/release_handler_SUITE_data/unicode/u-1.0/src/u.erl
new file mode 100644
index 0000000000..45fe098c0e
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/unicode/u-1.0/src/u.erl
@@ -0,0 +1,50 @@
+%% ``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.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%%     $Id$
+%%
+-module(u).
+
+
+-behaviour(gen_server).
+
+-vsn(1).
+
+%% External exports
+-export([start_link/0, u/0]).
+%% Internal exports
+-export([init/1, handle_call/3, handle_info/2, terminate/2]).
+
+start_link() -> gen_server:start_link({local, uu}, u, [], []).
+
+u() -> gen_server:call(uu, u).
+
+%%-----------------------------------------------------------------
+%% Callback functions from gen_server
+%%-----------------------------------------------------------------
+init([]) ->
+    process_flag(trap_exit, true),
+    {ok, state}.
+
+handle_call(u, _From, State) ->
+    X = application:get_all_env(u),
+    {reply, {X,State}, State}.
+
+handle_info(_, State) ->
+    {noreply, State}.
+
+terminate(_Reason, _State) ->
+    ok.
diff --git a/lib/sasl/test/release_handler_SUITE_data/unicode/u-1.0/src/u_sup.erl b/lib/sasl/test/release_handler_SUITE_data/unicode/u-1.0/src/u_sup.erl
new file mode 100644
index 0000000000..b0d4a7b58f
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/unicode/u-1.0/src/u_sup.erl
@@ -0,0 +1,38 @@
+%% ``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.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%%     $Id$
+%%
+-module(u_sup).
+
+
+-behaviour(supervisor).
+
+%% External exports
+-export([start/2]).
+
+%% Internal exports
+-export([init/1]).
+
+start(_, _) ->
+    supervisor:start_link({local, ?MODULE}, ?MODULE, []).
+
+init([]) ->
+    SupFlags = {one_for_one, 4, 3600},
+    Config = {u,
+	      {u, start_link, []},
+	      permanent, 2000, worker, [u]},
+    {ok, {SupFlags, [Config]}}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/unicode/u-1.1/ebin/u.app b/lib/sasl/test/release_handler_SUITE_data/unicode/u-1.1/ebin/u.app
new file mode 100644
index 0000000000..8fcc3bba42
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/unicode/u-1.1/ebin/u.app
@@ -0,0 +1,8 @@
+{application, u,
+	     [{description, "This app shall test unicode handling αβ"},
+              {vsn, "1.1"},
+	      {modules, [u, u_sup]},
+	      {registered, [u_sup]},
+	      {applications, [kernel, stdlib]},
+	      {env, [{'key_αβ', 'val_αβ'}]},
+	      {mod, {u_sup, []}}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/unicode/u-1.1/ebin/u.appup b/lib/sasl/test/release_handler_SUITE_data/unicode/u-1.1/ebin/u.appup
new file mode 100644
index 0000000000..0344ce92ab
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/unicode/u-1.1/ebin/u.appup
@@ -0,0 +1,3 @@
+{"1.1",
+ [{"1.0",[{update,u,{advanced,'αβ'}}]}],
+ [{"1.0",[{update,u,{advanced,'αβ'}}]}]}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/unicode/u-1.1/src/u.erl b/lib/sasl/test/release_handler_SUITE_data/unicode/u-1.1/src/u.erl
new file mode 100644
index 0000000000..d2544d6fc1
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/unicode/u-1.1/src/u.erl
@@ -0,0 +1,55 @@
+%% ``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.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%%     $Id$
+%%
+-module(u).
+
+
+-behaviour(gen_server).
+
+-vsn(1).
+
+%% External exports
+-export([start_link/0, u/0]).
+%% Internal exports
+-export([init/1, handle_call/3, handle_info/2, terminate/2, code_change/3]).
+
+start_link() -> gen_server:start_link({local, uu}, u, [], []).
+
+u() -> gen_server:call(uu, u).
+
+%%-----------------------------------------------------------------
+%% Callback functions from gen_server
+%%-----------------------------------------------------------------
+init([]) ->
+    process_flag(trap_exit, true),
+    {ok, {state,'αβ'}}.
+
+handle_call(u, _From, State) ->
+    X = application:get_all_env(u),
+    {reply, {X,State}, State}.
+
+handle_info(_, State) ->
+    {noreply, State}.
+
+terminate(_Reason, _State) ->
+    ok.
+
+code_change({down,_}, {State,_}, _Extra) ->
+    {ok, State};
+code_change(_, State, Extra) ->
+    {ok, {State, Extra}}.
diff --git a/lib/sasl/test/release_handler_SUITE_data/unicode/u-1.1/src/u_sup.erl b/lib/sasl/test/release_handler_SUITE_data/unicode/u-1.1/src/u_sup.erl
new file mode 100644
index 0000000000..b0d4a7b58f
--- /dev/null
+++ b/lib/sasl/test/release_handler_SUITE_data/unicode/u-1.1/src/u_sup.erl
@@ -0,0 +1,38 @@
+%% ``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.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%%     $Id$
+%%
+-module(u_sup).
+
+
+-behaviour(supervisor).
+
+%% External exports
+-export([start/2]).
+
+%% Internal exports
+-export([init/1]).
+
+start(_, _) ->
+    supervisor:start_link({local, ?MODULE}, ?MODULE, []).
+
+init([]) ->
+    SupFlags = {one_for_one, 4, 3600},
+    Config = {u,
+	      {u, start_link, []},
+	      permanent, 2000, worker, [u]},
+    {ok, {SupFlags, [Config]}}.