Space, not separator.

src/Range.hs

@@ -30,7 +30,7 @@ rangesAndWordsFrom startIndex string =
     parse predicate string = case span predicate string of
       ([], _) -> Nothing
       (parsed, rest) -> Just (parsed, rest)
-    isWordOrSeparator c = Char.isSeparator c || isWord c
+    isWordOrSeparator c = Char.isSpace c || isWord c
     -- | Is this a word character?
     -- | Word characters are defined as in [Ruby’s `\p{Word}` syntax](http://ruby-doc.org/core-2.1.1/Regexp.html#class-Regexp-label-Character+Properties), i.e.:
     -- | > A member of one of the following Unicode general category _Letter_, _Mark_, _Number_, _Connector_Punctuation_