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-rw-r--r--lib/stdlib/src/unicode.erl23
1 files changed, 15 insertions, 8 deletions
diff --git a/lib/stdlib/src/unicode.erl b/lib/stdlib/src/unicode.erl
index 8b9412fb1b..10b652cdde 100644
--- a/lib/stdlib/src/unicode.erl
+++ b/lib/stdlib/src/unicode.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2008-2012. All Rights Reserved.
+%% Copyright Ericsson AB 2008-2013. 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
@@ -25,25 +25,32 @@
-export_type([chardata/0, charlist/0, encoding/0, external_chardata/0,
external_charlist/0, latin1_chardata/0,
- latin1_charlist/0, unicode_binary/0, unicode_char/0]).
+ latin1_charlist/0, unicode_binary/0]).
-type encoding() :: 'latin1' | 'unicode' | 'utf8'
| 'utf16' | {'utf16', endian()}
| 'utf32' | {'utf32', endian()}.
-type endian() :: 'big' | 'little'.
-type unicode_binary() :: binary().
--type unicode_char() :: non_neg_integer().
--type charlist() :: [unicode_char() | unicode_binary() | charlist()].
+-type charlist() ::
+ maybe_improper_list(char() | unicode_binary() | charlist(),
+ unicode_binary() | nil()).
-type chardata() :: charlist() | unicode_binary().
-type external_unicode_binary() :: binary().
-type external_chardata() :: external_charlist() | external_unicode_binary().
--type external_charlist() :: [unicode_char() | external_unicode_binary()
- | external_charlist()].
+-type external_charlist() ::
+ maybe_improper_list(char() |
+ external_unicode_binary() |
+ external_charlist(),
+ external_unicode_binary() | nil()).
-type latin1_binary() :: binary().
-type latin1_char() :: byte().
-type latin1_chardata() :: latin1_charlist() | latin1_binary().
--type latin1_charlist() :: [latin1_char() | latin1_binary()
- | latin1_charlist()].
+-type latin1_charlist() ::
+ maybe_improper_list(latin1_char() |
+ latin1_binary() |
+ latin1_charlist(),
+ latin1_binary() | nil()).
%%% BIFs
%%%