Merge branch 'hb/file_name_type/OTP-10852'

* hb/file_name_type/OTP-10852:
  Introduce new type file:name_all()

7 files changed, 168 insertions, 96 deletions

diff --git a/lib/dialyzer/test/r9c_SUITE_data/results/inets b/lib/dialyzer/test/r9c_SUITE_data/results/inets
index 629378d673..d377f34978 100644
--- a/lib/dialyzer/test/r9c_SUITE_data/results/inets
+++ b/lib/dialyzer/test/r9c_SUITE_data/results/inets
@@ -1,5 +1,5 @@
 
-ftp.erl:1243: The pattern {'ok', {N, Bytes}} can never match the type 'eof' | {'error',atom()} | {'ok',binary() | string()}
+ftp.erl:1243: The pattern {'ok', {N, Bytes}} can never match the type 'eof' | {'error',atom() | {'no_translation','unicode','latin1'}} | {'ok',binary() | string()}
 ftp.erl:640: The pattern {'closed', _Why} can never match the type 'perm_fname_not_allowed' | 'perm_neg_compl' | 'perm_no_space' | 'pos_compl' | 'pos_interm' | 'pos_interm_acct' | 'trans_neg_compl' | 'trans_no_space' | {'error' | 'perm_fname_not_allowed' | 'perm_neg_compl' | 'perm_no_space' | 'pos_compl' | 'pos_interm' | 'pos_interm_acct' | 'pos_prel' | 'trans_neg_compl' | 'trans_no_space',atom() | [any()] | {'invalid_server_response',[any(),...]}}
 http.erl:117: The pattern {'error', Reason} can never match the type #req_headers{connection::[45 | 97 | 101 | 105 | 107 | 108 | 112 | 118,...],content_length::[48,...],other::[{_,_}]}
 http.erl:138: Function close_session/2 will never be called
@@ -34,7 +34,7 @@ mod_auth_plain.erl:100: The variable _ can never match since previous clauses co
 mod_auth_plain.erl:159: The variable _ can never match since previous clauses completely covered the type [[any()]]
 mod_auth_plain.erl:83: The variable O can never match since previous clauses completely covered the type [[any()]]
 mod_cgi.erl:372: The pattern {'http_response', NewAccResponse} can never match the type 'ok'
-mod_dir.erl:101: The call lists:flatten(nonempty_improper_list(atom() | [any()] | char(),atom())) will never return since it differs in the 1st argument from the success typing arguments: ([any()])
+mod_dir.erl:101: The call lists:flatten(nonempty_improper_list(atom() | [any()] | char(),atom() | {'no_translation',binary()})) will never return since it differs in the 1st argument from the success typing arguments: ([any()])
 mod_dir.erl:72: The pattern {'error', Reason} can never match the type {'ok',[[[any()] | char()],...]}
 mod_get.erl:135: The pattern <{'enfile', _}, _Info, Path> can never match the type <atom(),#mod{},atom() | binary() | [atom() | [any()] | char()]>
 mod_head.erl:80: The pattern <{'enfile', _}, _Info, Path> can never match the type <atom(),#mod{},atom() | binary() | [atom() | [any()] | char()]>
diff --git a/lib/dialyzer/test/r9c_SUITE_data/results/mnesia b/lib/dialyzer/test/r9c_SUITE_data/results/mnesia
index 1aac46f5b2..b73943422a 100644
--- a/lib/dialyzer/test/r9c_SUITE_data/results/mnesia
+++ b/lib/dialyzer/test/r9c_SUITE_data/results/mnesia
@@ -20,8 +20,8 @@ mnesia_frag_hash.erl:24: Callback info about the mnesia_frag_hash behaviour is n
 mnesia_frag_old_hash.erl:23: Callback info about the mnesia_frag_hash behaviour is not available
 mnesia_index.erl:52: The call mnesia_lib:other_val(Var::{_,'commit_work' | 'index' | 'setorbag' | 'storage_type' | {'index',_}},_ReASoN_::any()) will never return since it differs in the 1st argument from the success typing arguments: ({_,'active_replicas' | 'where_to_read' | 'where_to_write'},any())
 mnesia_lib.erl:1028: The pattern {'EXIT', Reason} can never match the type [any()] | {'error',_}
-mnesia_lib.erl:957: The pattern {'ok', {0, _}} can never match the type 'eof' | {'error',atom()} | {'ok',binary() | string()}
-mnesia_lib.erl:959: The pattern {'ok', {_, Bin}} can never match the type 'eof' | {'error',atom()} | {'ok',binary() | string()}
+mnesia_lib.erl:957: The pattern {'ok', {0, _}} can never match the type 'eof' | {'error',atom() | {'no_translation','unicode','latin1'}} | {'ok',binary() | string()}
+mnesia_lib.erl:959: The pattern {'ok', {_, Bin}} can never match the type 'eof' | {'error',atom() | {'no_translation','unicode','latin1'}} | {'ok',binary() | string()}
 mnesia_loader.erl:36: The call mnesia_lib:other_val(Var::{_,'access_mode' | 'cstruct' | 'db_nodes' | 'setorbag' | 'snmp' | 'storage_type'},Reason::any()) will never return since it differs in the 1st argument from the success typing arguments: ({_,'active_replicas' | 'where_to_read' | 'where_to_write'},any())
 mnesia_locker.erl:1017: Function system_terminate/4 has no local return
 mnesia_log.erl:707: The test {'error',{[1..255,...],[any(),...]}} | {'ok',_} == atom() can never evaluate to 'true'
diff --git a/lib/dialyzer/test/small_SUITE_data/results/flatten b/lib/dialyzer/test/small_SUITE_data/results/flatten
index 8aa44dd002..0bd866770c 100644
--- a/lib/dialyzer/test/small_SUITE_data/results/flatten
+++ b/lib/dialyzer/test/small_SUITE_data/results/flatten
@@ -1,2 +1,2 @@
 
-flatten.erl:17: The call lists:flatten(nonempty_improper_list(atom() | [any()] | char(),atom())) will never return since it differs in the 1st argument from the success typing arguments: ([any()])
+flatten.erl:17: The call lists:flatten(nonempty_improper_list(atom() | [any()] | char(),atom() | {'no_translation',binary()})) will never return since it differs in the 1st argument from the success typing arguments: ([any()])
diff --git a/lib/kernel/doc/src/file.xml b/lib/kernel/doc/src/file.xml
index 22a04c6c13..66ecba1bf2 100644
--- a/lib/kernel/doc/src/file.xml
+++ b/lib/kernel/doc/src/file.xml
@@ -117,6 +117,14 @@
       <desc>
         <p>If VM is in Unicode filename mode, <c>string()</c> and <c>char()</c>
           are allowed to be > 255.
+        </p>
+      </desc>
+    </datatype>
+    <datatype>
+      <name name="name_all"/>
+      <desc>
+        <p>If VM is in Unicode filename mode, <c>string()</c> and <c>char()</c>
+          are allowed to be > 255.
           <c><anno>RawFilename</anno></c> is a filename not subject to
           Unicode translation,
           meaning that it can contain characters not conforming to
@@ -514,6 +522,12 @@
           <item>
             <p>The directory does not exist.</p>
           </item>
+          <tag><c>{no_translation, <anno>Filename</anno>}</c></tag>
+          <item>
+            <p><c><anno>Filename</anno></c> is a <c>binary()</c> with
+              characters coded in ISO-latin-1 and the VM was started
+              with the parameter <c>+fnue</c>.</p>
+          </item>
         </taglist>
       </desc>
     </func>
@@ -1629,6 +1643,12 @@
             <p><c><anno>Dir</anno></c> had an improper type,
               such as tuple.</p>
           </item>
+          <tag><c>no_translation</c></tag>
+          <item>
+            <p><c><anno>Dir</anno></c> is a <c>binary()</c> with
+              characters coded in ISO-latin-1 and the VM was started
+              with the parameter <c>+fnue</c>.</p>
+          </item>
         </taglist>
         <warning>
           <p>In a future release, a bad type for the
diff --git a/lib/kernel/src/file.erl b/lib/kernel/src/file.erl
index 5f52f94270..a4c56b346f 100644
--- a/lib/kernel/src/file.erl
+++ b/lib/kernel/src/file.erl
@@ -68,7 +68,7 @@
 
 %% Types that can be used from other modules -- alphabetically ordered.
 -export_type([date_time/0, fd/0, file_info/0, filename/0, filename_all/0,
-              io_device/0, name/0, posix/0]).
+              io_device/0, name/0, name_all/0, posix/0]).
 
 %%% Includes and defines
 -include("file.hrl").
@@ -97,7 +97,8 @@
 		   | 'read_ahead' | 'compressed'
 		   | {'encoding', unicode:encoding()}.
 -type deep_list() :: [char() | atom() | deep_list()].
--type name()      :: string() | atom() | deep_list() | (RawFilename :: binary()).
+-type name()      :: string() | atom() | deep_list().
+-type name_all()  :: string() | atom() | deep_list() | (RawFilename :: binary()).
 -type posix()     :: 'eacces'  | 'eagain'  | 'ebadf'   | 'ebusy'  | 'edquot'
 		   | 'eexist'  | 'efault'  | 'efbig'   | 'eintr'  | 'einval'
 		   | 'eio'     | 'eisdir'  | 'eloop'   | 'emfile' | 'emlink'
@@ -117,7 +118,7 @@
 -export([file_info/1, native_name_encoding/0]).
 
 -spec file_info(Filename) -> {ok, FileInfo} | {error, Reason} when
-      Filename :: name(),
+      Filename :: name_all(),
       FileInfo :: file_info(),
       Reason :: posix() | badarg.
 
@@ -160,7 +161,7 @@ format_error(ErrorId) ->
     erl_posix_msg:message(ErrorId).
 
 -spec pid2name(Pid) -> {ok, Filename} | undefined when
-      Filename :: filename(),
+      Filename :: filename_all(),
       Pid :: pid().
 
 pid2name(Pid) when is_pid(Pid) ->
@@ -197,42 +198,42 @@ get_cwd(Drive) ->
 
 -spec set_cwd(Dir) -> ok | {error, Reason} when
       Dir :: name(),
-      Reason :: posix() | badarg.
+      Reason :: posix() | badarg | no_translation.
 
 set_cwd(Dirname) -> 
     check_and_call(set_cwd, [file_name(Dirname)]).
 
 -spec delete(Filename) -> ok | {error, Reason} when
-      Filename :: name(),
+      Filename :: name_all(),
       Reason :: posix() | badarg.
 
 delete(Name) ->
     check_and_call(delete, [file_name(Name)]).
 
 -spec rename(Source, Destination) -> ok | {error, Reason} when
-      Source :: name(),
-      Destination :: name(),
+      Source :: name_all(),
+      Destination :: name_all(),
       Reason :: posix() | badarg.
 
 rename(From, To) ->
     check_and_call(rename, [file_name(From), file_name(To)]).
 
 -spec make_dir(Dir) -> ok | {error, Reason} when
-      Dir :: name(),
+      Dir :: name_all(),
       Reason :: posix() | badarg.
 
 make_dir(Name) ->
     check_and_call(make_dir, [file_name(Name)]).
 
 -spec del_dir(Dir) -> ok | {error, Reason} when
-      Dir :: name(),
+      Dir :: name_all(),
       Reason :: posix() | badarg.
 
 del_dir(Name) ->
     check_and_call(del_dir, [file_name(Name)]).
 
 -spec read_file_info(Filename) -> {ok, FileInfo} | {error, Reason} when
-      Filename :: name(),
+      Filename :: name_all(),
       FileInfo :: file_info(),
       Reason :: posix() | badarg.
 
@@ -240,7 +241,7 @@ read_file_info(Name) ->
     check_and_call(read_file_info, [file_name(Name)]).
 
 -spec read_file_info(Filename, Opts) -> {ok, FileInfo} | {error, Reason} when
-      Filename :: name(),
+      Filename :: name_all(),
       Opts :: [file_info_option()],
       FileInfo :: file_info(),
       Reason :: posix() | badarg.
@@ -248,13 +249,13 @@ read_file_info(Name) ->
 read_file_info(Name, Opts) when is_list(Opts) ->
     check_and_call(read_file_info, [file_name(Name), Opts]).
 
--spec altname(Name :: name()) -> any().
+-spec altname(Name :: name_all()) -> any().
 
 altname(Name) ->
     check_and_call(altname, [file_name(Name)]).
 
 -spec read_link_info(Name) -> {ok, FileInfo} | {error, Reason} when
-      Name :: name(),
+      Name :: name_all(),
       FileInfo :: file_info(),
       Reason :: posix() | badarg.
 
@@ -262,7 +263,7 @@ read_link_info(Name) ->
     check_and_call(read_link_info, [file_name(Name)]).
 
 -spec read_link_info(Name, Opts) -> {ok, FileInfo} | {error, Reason} when
-      Name :: name(),
+      Name :: name_all(),
       Opts :: [file_info_option()],
       FileInfo :: file_info(),
       Reason :: posix() | badarg.
@@ -272,7 +273,7 @@ read_link_info(Name, Opts) when is_list(Opts) ->
 
 
 -spec read_link(Name) -> {ok, Filename} | {error, Reason} when
-      Name :: name(),
+      Name :: name_all(),
       Filename :: filename(),
       Reason :: posix() | badarg.
 
@@ -280,7 +281,7 @@ read_link(Name) ->
     check_and_call(read_link, [file_name(Name)]).
 
 -spec read_link_all(Name) -> {ok, Filename} | {error, Reason} when
-      Name :: name(),
+      Name :: name_all(),
       Filename :: filename_all(),
       Reason :: posix() | badarg.
 
@@ -288,7 +289,7 @@ read_link_all(Name) ->
     check_and_call(read_link_all, [file_name(Name)]).
 
 -spec write_file_info(Filename, FileInfo) -> ok | {error, Reason} when
-      Filename :: name(),
+      Filename :: name_all(),
       FileInfo :: file_info(),
       Reason :: posix() | badarg.
 
@@ -296,7 +297,7 @@ write_file_info(Name, Info = #file_info{}) ->
     check_and_call(write_file_info, [file_name(Name), Info]).
 
 -spec write_file_info(Filename, FileInfo, Opts) -> ok | {error, Reason} when
-      Filename :: name(),
+      Filename :: name_all(),
       Opts :: [file_info_option()],
       FileInfo :: file_info(),
       Reason :: posix() | badarg.
@@ -305,15 +306,17 @@ write_file_info(Name, Info = #file_info{}, Opts) when is_list(Opts) ->
     check_and_call(write_file_info, [file_name(Name), Info, Opts]).
 
 -spec list_dir(Dir) -> {ok, Filenames} | {error, Reason} when
-      Dir :: name(),
+      Dir :: name_all(),
       Filenames :: [filename()],
-      Reason :: posix() | badarg.
+      Reason :: posix()
+              | badarg
+              | {no_translation, Filename :: unicode:latin1_binary()}.
 
 list_dir(Name) ->
     check_and_call(list_dir, [file_name(Name)]).
 
 -spec list_dir_all(Dir) -> {ok, Filenames} | {error, Reason} when
-      Dir :: name(),
+      Dir :: name_all(),
       Filenames :: [filename_all()],
       Reason :: posix() | badarg.
 
@@ -321,7 +324,7 @@ list_dir_all(Name) ->
     check_and_call(list_dir_all, [file_name(Name)]).
 
 -spec read_file(Filename) -> {ok, Binary} | {error, Reason} when
-      Filename :: name(),
+      Filename :: name_all(),
       Binary :: binary(),
       Reason :: posix() | badarg | terminated | system_limit.
 
@@ -329,23 +332,23 @@ read_file(Name) ->
     check_and_call(read_file, [file_name(Name)]).
 
 -spec make_link(Existing, New) -> ok | {error, Reason} when
-      Existing :: name(),
-      New :: name(),
+      Existing :: name_all(),
+      New :: name_all(),
       Reason :: posix() | badarg.
 
 make_link(Old, New) ->
     check_and_call(make_link, [file_name(Old), file_name(New)]).
 
 -spec make_symlink(Existing, New) -> ok | {error, Reason} when
-      Existing :: name(),
-      New :: name(),
+      Existing :: name_all(),
+      New :: name_all(),
       Reason :: posix() | badarg.
 
 make_symlink(Old, New) ->
     check_and_call(make_symlink, [file_name(Old), file_name(New)]).
 
 -spec write_file(Filename, Bytes) -> ok | {error, Reason} when
-      Filename :: name(),
+      Filename :: name_all(),
       Bytes :: iodata(),
       Reason :: posix() | badarg | terminated | system_limit.
 
@@ -357,7 +360,7 @@ write_file(Name, Bin) ->
 %% Meanwhile, it is implemented here, slightly less efficient.
 
 -spec write_file(Filename, Bytes, Modes) -> ok | {error, Reason} when
-      Filename :: name(),
+      Filename :: name_all(),
       Bytes :: iodata(),
       Modes :: [mode()],
       Reason :: posix() | badarg | terminated | system_limit.
@@ -416,7 +419,7 @@ raw_write_file_info(Name, #file_info{} = Info) ->
 
 -spec open(File, Modes) -> {ok, IoDevice} | {error, Reason} when
       File :: Filename | iodata(),
-      Filename :: name(),
+      Filename :: name_all(),
       Modes :: [mode() | ram],
       IoDevice :: io_device(),
       Reason :: posix() | badarg | system_limit.
@@ -523,7 +526,10 @@ allocate(#file_descriptor{module = Module} = Handle, Offset, Length) ->
       IoDevice :: io_device() | atom(),
       Number :: non_neg_integer(),
       Data :: string() | binary(),
-      Reason :: posix() | badarg | terminated.
+      Reason :: posix()
+              | badarg
+              | terminated
+              | {no_translation, unicode, latin1}.
 
 read(File, Sz) when (is_pid(File) orelse is_atom(File)), is_integer(Sz), Sz >= 0 ->
     case io:request(File, {get_chars, '', Sz}) of
@@ -541,7 +547,10 @@ read(_, _) ->
 -spec read_line(IoDevice) -> {ok, Data} | eof | {error, Reason} when
       IoDevice :: io_device() | atom(),
       Data :: string() | binary(),
-      Reason :: posix() | badarg | terminated.
+      Reason :: posix()
+              | badarg
+              | terminated
+              | {no_translation, unicode, latin1}.
 
 read_line(File) when (is_pid(File) orelse is_atom(File)) ->
     case io:request(File, {get_line, ''}) of
@@ -709,7 +718,7 @@ truncate(_) ->
 -spec copy(Source, Destination) -> {ok, BytesCopied} | {error, Reason} when
       Source :: io_device() | Filename | {Filename, Modes},
       Destination :: io_device() | Filename | {Filename, Modes},
-      Filename :: name(),
+      Filename :: name_all(),
       Modes :: [mode()],
       BytesCopied :: non_neg_integer(),
       Reason :: posix() | badarg | terminated.
@@ -721,7 +730,7 @@ copy(Source, Dest) ->
              {ok, BytesCopied} | {error, Reason} when
       Source :: io_device() | Filename | {Filename, Modes},
       Destination :: io_device() | Filename | {Filename, Modes},
-      Filename :: name(),
+      Filename :: name_all(),
       Modes :: [mode()],
       ByteCount :: non_neg_integer() | infinity,
       BytesCopied :: non_neg_integer(),
@@ -948,7 +957,7 @@ ipread_s32bu_p32bu_2(File,
 %%% provide a higher-lever interface to files.
 
 -spec consult(Filename) -> {ok, Terms} | {error, Reason} when
-      Filename :: name(),
+      Filename :: name_all(),
       Terms :: [term()],
       Reason :: posix() | badarg | terminated | system_limit
               | {Line :: integer(), Mod :: module(), Term :: term()}.
@@ -965,10 +974,10 @@ consult(File) ->
 
 -spec path_consult(Path, Filename) -> {ok, Terms, FullName} | {error, Reason} when
       Path :: [Dir],
-      Dir :: name(),
-      Filename :: name(),
+      Dir :: name_all(),
+      Filename :: name_all(),
       Terms :: [term()],
-      FullName :: filename(),
+      FullName :: filename_all(),
       Reason :: posix() | badarg | terminated | system_limit
               | {Line :: integer(), Mod :: module(), Term :: term()}.
 
@@ -988,7 +997,7 @@ path_consult(Path, File) ->
     end.
 
 -spec eval(Filename) -> ok | {error, Reason} when
-      Filename :: name(),
+      Filename :: name_all(),
       Reason :: posix() | badarg | terminated | system_limit
               | {Line :: integer(), Mod :: module(), Term :: term()}.
 
@@ -996,7 +1005,7 @@ eval(File) ->
     eval(File, erl_eval:new_bindings()).
 
 -spec eval(Filename, Bindings) -> ok | {error, Reason} when
-      Filename :: name(),
+      Filename :: name_all(),
       Bindings :: erl_eval:binding_struct(),
       Reason :: posix() | badarg | terminated | system_limit
               | {Line :: integer(), Mod :: module(), Term :: term()}.
@@ -1012,9 +1021,9 @@ eval(File, Bs) ->
     end.
 
 -spec path_eval(Path, Filename) -> {ok, FullName} | {error, Reason} when
-      Path :: [Dir :: name()],
-      Filename :: name(),
-      FullName :: filename(),
+      Path :: [Dir :: name_all()],
+      Filename :: name_all(),
+      FullName :: filename_all(),
       Reason :: posix() | badarg | terminated | system_limit
               | {Line :: integer(), Mod :: module(), Term :: term()}.
 
@@ -1023,10 +1032,10 @@ path_eval(Path, File) ->
 
 -spec path_eval(Path, Filename, Bindings) ->
              {ok, FullName} | {error, Reason} when
-      Path :: [Dir :: name()],
-      Filename :: name(),
+      Path :: [Dir :: name_all()],
+      Filename :: name_all(),
       Bindings :: erl_eval:binding_struct(),
-      FullName :: filename(),
+      FullName :: filename_all(),
       Reason :: posix() | badarg | terminated | system_limit
               | {Line :: integer(), Mod :: module(), Term :: term()}.
 
@@ -1046,7 +1055,7 @@ path_eval(Path, File, Bs) ->
     end.
 
 -spec script(Filename) -> {ok, Value} | {error, Reason} when
-      Filename :: name(),
+      Filename :: name_all(),
       Value :: term(),
       Reason :: posix() | badarg | terminated | system_limit
               | {Line :: integer(), Mod :: module(), Term :: term()}.
@@ -1055,7 +1064,7 @@ script(File) ->
     script(File, erl_eval:new_bindings()).
 
 -spec script(Filename, Bindings) -> {ok, Value} | {error, Reason} when
-      Filename :: name(),
+      Filename :: name_all(),
       Bindings :: erl_eval:binding_struct(),
       Value :: term(),
       Reason :: posix() | badarg | terminated | system_limit
@@ -1073,10 +1082,10 @@ script(File, Bs) ->
 
 -spec path_script(Path, Filename) ->
              {ok, Value, FullName} | {error, Reason} when
-      Path :: [Dir :: name()],
-      Filename :: name(),
+      Path :: [Dir :: name_all()],
+      Filename :: name_all(),
       Value :: term(),
-      FullName :: filename(),
+      FullName :: filename_all(),
       Reason :: posix() | badarg | terminated | system_limit
               | {Line :: integer(), Mod :: module(), Term :: term()}.
 
@@ -1085,11 +1094,11 @@ path_script(Path, File) ->
 
 -spec path_script(Path, Filename, Bindings) ->
           {ok, Value, FullName} | {error, Reason} when
-      Path :: [Dir :: name()],
-      Filename :: name(),
+      Path :: [Dir :: name_all()],
+      Filename :: name_all(),
       Bindings :: erl_eval:binding_struct(),
       Value :: term(),
-      FullName :: filename(),
+      FullName :: filename_all(),
       Reason :: posix() | badarg | terminated | system_limit
               | {Line :: integer(), Mod :: module(), Term :: term()}.
 
@@ -1118,11 +1127,11 @@ path_script(Path, File, Bs) ->
 
 -spec path_open(Path, Filename, Modes) ->
              {ok, IoDevice, FullName} | {error, Reason} when
-      Path :: [Dir :: name()],
-      Filename :: name(),
+      Path :: [Dir :: name_all()],
+      Filename :: name_all(),
       Modes :: [mode()],
       IoDevice :: io_device(),
-      FullName :: filename(),
+      FullName :: filename_all(),
       Reason :: posix() | badarg | system_limit.
 
 path_open(PathList, Name, Mode) ->
@@ -1144,7 +1153,7 @@ path_open(PathList, Name, Mode) ->
     end.
 
 -spec change_mode(Filename, Mode) -> ok | {error, Reason} when
-      Filename :: name(),
+      Filename :: name_all(),
       Mode :: integer(),
       Reason :: posix() | badarg.
 
@@ -1153,7 +1162,7 @@ change_mode(Name, Mode)
     write_file_info(Name, #file_info{mode=Mode}).
 
 -spec change_owner(Filename, Uid) -> ok | {error, Reason} when
-      Filename :: name(),
+      Filename :: name_all(),
       Uid :: integer(),
       Reason :: posix() | badarg.
 
@@ -1162,7 +1171,7 @@ change_owner(Name, OwnerId)
     write_file_info(Name, #file_info{uid=OwnerId}).
 
 -spec change_owner(Filename, Uid, Gid) -> ok | {error, Reason} when
-      Filename :: name(),
+      Filename :: name_all(),
       Uid :: integer(),
       Gid :: integer(),
       Reason :: posix() | badarg.
@@ -1172,7 +1181,7 @@ change_owner(Name, OwnerId, GroupId)
     write_file_info(Name, #file_info{uid=OwnerId, gid=GroupId}).
 
 -spec change_group(Filename, Gid) -> ok | {error, Reason} when
-      Filename :: name(),
+      Filename :: name_all(),
       Gid :: integer(),
       Reason :: posix() | badarg.
 
@@ -1181,7 +1190,7 @@ change_group(Name, GroupId)
     write_file_info(Name, #file_info{gid=GroupId}).
 
 -spec change_time(Filename, Mtime) -> ok | {error, Reason} when
-      Filename :: name(),
+      Filename :: name_all(),
       Mtime :: date_time(),
       Reason :: posix() | badarg.
 
@@ -1191,7 +1200,7 @@ change_time(Name, {{Y, M, D}, {H, Min, Sec}}=Time)
     write_file_info(Name, #file_info{mtime=Time}).
 
 -spec change_time(Filename, Atime, Mtime) -> ok | {error, Reason} when
-      Filename :: name(),
+      Filename :: name_all(),
       Atime :: date_time(),
       Mtime :: date_time(),
       Reason :: posix() | badarg.
@@ -1239,7 +1248,7 @@ sendfile(File, Sock, Offset, Bytes, Opts) ->
 -spec sendfile(Filename, Socket) ->
    {'ok', non_neg_integer()} | {'error', inet:posix() | 
 				closed | badarg | not_owner}
-      when Filename :: name(),
+      when Filename :: name_all(),
 	   Socket :: inet:socket().
 sendfile(Filename, Sock)  ->
     case file:open(Filename, [read, raw, binary]) of
diff --git a/lib/kernel/test/file_SUITE.erl b/lib/kernel/test/file_SUITE.erl
index a7993dc21b..c604e7073f 100644
--- a/lib/kernel/test/file_SUITE.erl
+++ b/lib/kernel/test/file_SUITE.erl
@@ -57,7 +57,7 @@
 -export([rename/1, access/1, truncate/1, datasync/1, sync/1,
 	 read_write/1, pread_write/1, append/1, exclusive/1]).
 -export([ e_delete/1, e_rename/1, e_make_dir/1, e_del_dir/1]).
--export([otp_5814/1]).
+-export([otp_5814/1, otp_10852/1]).
 
 -export([ read_not_really_compressed/1,
 	 read_compressed_cooked/1, read_compressed_cooked_binary/1,
@@ -112,7 +112,7 @@ all() ->
      {group, files}, delete, rename, names, {group, errors},
      {group, compression}, {group, links}, copy,
      delayed_write, read_ahead, segment_read, segment_write,
-     ipread, pid2name, interleaved_read_write, otp_5814,
+     ipread, pid2name, interleaved_read_write, otp_5814, otp_10852,
      large_file, large_write, read_line_1, read_line_2, read_line_3,
      read_line_4, standard_io].
 
@@ -663,8 +663,8 @@ start_node(Name, Args) ->
 	    ct:log("Node ~p started~n", [Node]),
 	    Node
     end.
-    
-    
+
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 
@@ -3518,6 +3518,49 @@ otp_5814(Config) when is_list(Config) ->
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
+otp_10852(suite) ->
+    [];
+otp_10852(doc) ->
+    ["OTP-10852. +fnu and latin1 filenames"];
+otp_10852(Config) when is_list(Config) ->
+    Node = start_node(erl_pp_helper, "+fnu"),
+    Dir = ?config(priv_dir, Config),
+    B = filename:join(Dir, <<"\xE4">>),
+    ok = rpc_call(Node, get_cwd, [B]),
+    {error, no_translation} = rpc_call(Node, set_cwd, [B]),
+    ok = rpc_call(Node, delete, [B]),
+    ok = rpc_call(Node, rename, [B, B]),
+    ok = rpc_call(Node, read_file_info, [B]),
+    ok = rpc_call(Node, read_link_info, [B]),
+    ok = rpc_call(Node, read_link, [B]),
+    ok = rpc_call(Node, write_file_info, [B,#file_info{}]),
+    ok = rpc_call(Node, list_dir, [B]),
+    ok = rpc_call(Node, list_dir_all, [B]),
+    ok = rpc_call(Node, read_file, [B]),
+    ok = rpc_call(Node, make_link, [B,B]),
+    ok = rpc_call(Node, make_symlink, [B,B]),
+    ok = rpc_call(Node, delete, [B]),
+    ok = rpc_call(Node, make_dir, [B]),
+    ok = rpc_call(Node, del_dir, [B]),
+    ok = rpc_call(Node, write_file, [B,B]),
+    {ok, Fd} = rpc_call(Node, open, [B,[read]]),
+    ok = rpc_call(Node, close, [Fd]),
+    {ok,0} = rpc_call(Node, copy, [B,B]),
+    {ok, Fd2, B} = rpc_call(Node, path_open, [["."], B, [read]]),
+    ok = rpc_call(Node, close, [Fd2]),
+    true = test_server:stop_node(Node),
+    ok.
+
+rpc_call(N, F, As) ->
+    case rpc:call(N, ?FILE_MODULE, F, As) of
+        {error, enotsup} -> ok;
+        {error, enoent} -> ok;
+        {error, badarg} -> ok;
+        Else -> Else
+    end.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
 large_file(suite) ->
     [];
 large_file(doc) ->
diff --git a/lib/stdlib/src/filename.erl b/lib/stdlib/src/filename.erl
index e944dd4c43..66e54ef221 100644
--- a/lib/stdlib/src/filename.erl
+++ b/lib/stdlib/src/filename.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1997-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2013. 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
@@ -62,14 +62,14 @@
 
 
 -spec absname(Filename) -> file:filename_all() when
-      Filename :: file:name().
+      Filename :: file:name_all().
 absname(Name) ->
     {ok, Cwd} = file:get_cwd(),
     absname(Name, Cwd).
 
 -spec absname(Filename, Dir) -> file:filename_all() when
-      Filename :: file:name(),
-      Dir :: file:name().
+      Filename :: file:name_all(),
+      Dir :: file:name_all().
 absname(Name, AbsBase) when is_binary(Name), is_list(AbsBase) ->
     absname(Name,filename_string_to_binary(AbsBase));
 absname(Name, AbsBase) when is_list(Name), is_binary(AbsBase) ->
@@ -123,8 +123,8 @@ absname_vr([[X, $:]|Name], _, _AbsBase) ->
 %% AbsBase must be absolute and Name must be relative.
 
 -spec absname_join(Dir, Filename) -> file:filename_all() when
-      Dir :: file:name(),
-      Filename :: file:name().
+      Dir :: file:name_all(),
+      Filename :: file:name_all().
 absname_join(AbsBase, Name) ->
     join(AbsBase, flatten(Name)).
 
@@ -137,7 +137,7 @@ absname_join(AbsBase, Name) ->
 %%           basename("/") -> []
 
 -spec basename(Filename) -> file:filename_all() when
-      Filename :: file:name().
+      Filename :: file:name_all().
 basename(Name) when is_binary(Name) ->
     case os:type() of
 	{win32,_} ->
@@ -202,8 +202,8 @@ skip_prefix(Name, _) ->
 %%	    rootname(basename("xxx.erl")) -> "xxx"
 
 -spec basename(Filename, Ext) -> file:filename_all() when
-      Filename :: file:name(),
-      Ext :: file:name().
+      Filename :: file:name_all(),
+      Ext :: file:name_all().
 basename(Name, Ext) when is_binary(Name), is_list(Ext) ->
     basename(Name,filename_string_to_binary(Ext));
 basename(Name, Ext) when is_list(Name), is_binary(Ext) ->
@@ -252,7 +252,7 @@ basename([], _Ext, Tail, _DrvSep2) ->
 %%	    dirname("kalle.erl") -> "."
 
 -spec dirname(Filename) -> file:filename_all() when
-      Filename :: file:name().
+      Filename :: file:name_all().
 dirname(Name) when is_binary(Name) ->
     {Dsep,Drivesep} = separators(),
     SList = case Dsep of
@@ -345,7 +345,7 @@ dirjoin1([H|T],Acc,Sep) ->
 %% On Windows:  fn:dirname("\\usr\\src/kalle.erl") -> "/usr/src"
 
 -spec extension(Filename) -> file:filename_all() when
-      Filename :: file:name().
+      Filename :: file:name_all().
 extension(Name) when is_binary(Name) ->
     {Dsep,_} = separators(),
     SList = case Dsep of
@@ -388,7 +388,7 @@ extension([], Result, _OsType) ->
 %% Joins a list of filenames with directory separators.
 
 -spec join(Components) -> file:filename_all() when
-      Components :: [file:name()].
+      Components :: [file:name_all()].
 join([Name1, Name2|Rest]) ->
     join([join(Name1, Name2)|Rest]);
 join([Name]) when is_list(Name) ->
@@ -401,8 +401,8 @@ join([Name]) when is_atom(Name) ->
 %% Joins two filenames with directory separators.
 
 -spec join(Name1, Name2) -> file:filename_all() when
-      Name1 :: file:name(),
-      Name2 :: file:name().
+      Name1 :: file:name_all(),
+      Name2 :: file:name_all().
 join(Name1, Name2) when is_list(Name1), is_list(Name2) ->
     OsType = major_os_type(),
     case pathtype(Name2) of
@@ -488,7 +488,7 @@ maybe_remove_dirsep(Name, _) ->
 %% a given base directory, which is is assumed to be normalised
 %% by a previous call to join/{1,2}.
 
--spec append(file:filename_all(), file:name()) -> file:filename_all().
+-spec append(file:filename_all(), file:name_all()) -> file:filename_all().
 append(Dir, Name) when is_binary(Dir), is_binary(Name) ->
     <<Dir/binary,$/:8,Name/binary>>;
 append(Dir, Name) when is_binary(Dir) ->
@@ -511,7 +511,7 @@ append(Dir, Name) ->
 %%		Example: a:bar.erl, /temp/foo.erl
 
 -spec pathtype(Path) -> 'absolute' | 'relative' | 'volumerelative' when
-      Path :: file:name().
+      Path :: file:name_all().
 pathtype(Atom) when is_atom(Atom) ->
     pathtype(atom_to_list(Atom));
 pathtype(Name) when is_list(Name) or is_binary(Name) ->
@@ -565,7 +565,7 @@ win32_pathtype(_) 		  -> relative.
 %%           rootname("/jam.src/foo.erl") -> "/jam.src/foo"
 
 -spec rootname(Filename) -> file:filename_all() when
-      Filename :: file:name().
+      Filename :: file:name_all().
 rootname(Name) when is_binary(Name) ->
     list_to_binary(rootname(binary_to_list(Name))); % No need to handle unicode, . is < 128
 rootname(Name0) ->
@@ -595,8 +595,8 @@ rootname([], Root, _Ext, _OsType) ->
 %%           rootname("/jam.src/foo.erl", ".erl") -> "/jam.src/foo"
 
 -spec rootname(Filename, Ext) -> file:filename_all() when
-      Filename :: file:name(),
-      Ext :: file:name().
+      Filename :: file:name_all(),
+      Ext :: file:name_all().
 rootname(Name, Ext) when is_binary(Name), is_binary(Ext) ->
     list_to_binary(rootname(binary_to_list(Name),binary_to_list(Ext)));
 rootname(Name, Ext) when is_binary(Name) ->
@@ -623,8 +623,8 @@ rootname2([Char|Rest], Ext, Result) when is_integer(Char) ->
 %% split("a:\\msdev\\include") -> ["a:/", "msdev", "include"]
 
 -spec split(Filename) -> Components when
-      Filename :: file:name(),
-      Components :: [file:name()].
+      Filename :: file:name_all(),
+      Components :: [file:name_all()].
 split(Name) when is_binary(Name) ->
     case os:type() of
 	{win32, _} -> win32_splitb(Name);
@@ -718,7 +718,7 @@ split([], Comp, Components, OsType) ->
 %% name will be normalized as done by join/1.
 
 -spec nativename(Path) -> file:filename_all() when
-      Path :: file:name().
+      Path :: file:name_all().
 nativename(Name0) ->
     Name = join([Name0]),			%Normalize.
     case os:type() of
@@ -922,7 +922,7 @@ major_os_type() ->
 %%  Flatten a list, also accepting atoms.
 
 -spec flatten(Filename) -> file:filename_all() when
-      Filename :: file:name().
+      Filename :: file:name_all().
 flatten(Bin) when is_binary(Bin) ->
     Bin;
 flatten(List) ->