docs: function (str, findChar, start) {
              var index = str.indexOf(findChar, start);
              while (index != -1) {
                  if (!this.isEscaped(str, index)) {
                      return index;
                  }
                  // continue search after escaped character
                  index = str.indexOf(findChar, index + 1);
              }
              return -1;
          }