code: function(subject, search) {
      var matches = search.exec(subject);
      if (matches) {
        return {
          first: matches.index,
          last: matches.index + matches[0].length
        };
      }
    }
docs: Get the indexes of the first and last characters of the matched string.
  
  @param  {string} subject
  The string to search against.
  
  @param  {RegExp} search
  The regex search query.
  
  @return {Object}
  An object consisting of "first" and "last" properties representing the
  indexes of the first and last characters of a matching string.