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-rw-r--r--lib/stdlib/src/unicode.erl11
1 files changed, 10 insertions, 1 deletions
diff --git a/lib/stdlib/src/unicode.erl b/lib/stdlib/src/unicode.erl
index 09b1deff9c..869505ba83 100644
--- a/lib/stdlib/src/unicode.erl
+++ b/lib/stdlib/src/unicode.erl
@@ -25,8 +25,17 @@
%% InEncoding is not {latin1 | unicode | utf8})
%%
--export([characters_to_list/1, characters_to_list_int/2, characters_to_binary/1,characters_to_binary_int/2, characters_to_binary/3,bom_to_encoding/1, encoding_to_bom/1]).
+-export([characters_to_list/1, characters_to_list_int/2,
+ characters_to_binary/1, characters_to_binary_int/2,
+ characters_to_binary/3,
+ bom_to_encoding/1, encoding_to_bom/1]).
+-export_type([encoding/0]).
+
+-type encoding() :: 'latin1' | 'unicode' | 'utf8'
+ | 'utf16' | {'utf16', endian()}
+ | 'utf32' | {'utf32', endian()}.
+-type endian() :: 'big' | 'little'.
characters_to_list(ML) ->
unicode:characters_to_list(ML,unicode).