elli_ws_http: cosmetic tweaks

Author: yurrriq

src/elli_ws_http.erl

@@ -4,22 +4,26 @@
 
 -export([tokens/1]).
 
+
 -define(IS_TOKEN_SEP(C), (C =:= $, orelse C =:= $\s orelse C=:= $\t)).
 
-%% @doc Parse tokens 
+
+%% @doc Parse tokens
+-spec tokens(binary() | [binary() | [binary() | list()]]) -> [bitstring()].
 tokens(L) when is_list(L) ->
     lists:flatten([tokens(V) || V <- L]);
-
 tokens(Header) when is_binary(Header) ->
     parse_before(Header, []).
 
+
 parse_before(<<>>, Acc) ->
     lists:reverse(Acc);
 parse_before(<< C, Rest/bits >>, Acc) when ?IS_TOKEN_SEP(C) ->
     parse_before(Rest, Acc);
 parse_before(Buffer, Acc) ->
     parse(Buffer, Acc, <<>>).
 
+
 parse(<<>>, Acc, <<>>) ->
     lists:reverse(Acc);
 parse(<<>>, Acc, Token) ->