Merge pull request #51 from jfacorro/jfacorro.343.op_spaces_fails_wit…

…h_unicode

[Fix inaka/elvis#343] Use unicode module to convert utf8 binary to list

src/elvis_style.erl

@@ -878,7 +878,7 @@ check_operator_spaces(Lines, Tokens, {Position, Operator}) ->
                             Operator::string(),
                             Location::{integer(), integer()}) -> char().
 character_at_location(Position, Lines, Operator, {Line, Col}) ->
-    OperatorLineStr = binary_to_list(lists:nth(Line, Lines)),
+    OperatorLineStr = unicode:characters_to_list(lists:nth(Line, Lines)),
     ColToCheck = case Position of
         left  -> Col - 1;
         right -> Col + length(Operator)

test/examples/fail_operator_spaces.erl

@@ -1,13 +1,15 @@
 -module(fail_operator_spaces).
 
--export([function1/2,
-         function2/2,
-         function3/2,
-         function4/2,
-         function5/0,
-         function6/0,
-         function7/0,
-         tag_filters/2]).
+-export([ function1/2
+        , function2/2
+        , function3/2
+        , function4/2
+        , function5/0
+        , function6/0
+        , function7/0
+        , tag_filters/2
+        , unicode_characters/0
+        ]).
 
 %% No space before and after coma,on a comment.
 
@@ -63,3 +65,8 @@ tag_filters(DocName, #{conn := Conn} = State) ->
     {error, Error, _} ->
       {error, Error, State}
   end.
+
+unicode_characters() ->
+  <<"©"/utf8>> = <<"\\u00A9">>,
+  <<"ß"/utf8>> = <<"\\o337">>,
+  ok.