anchor.diff:          }
           index++;
           code = iter.next();
  -        if (identical(code, $x)) {
  +        if (code == $x) {
             for (int i = 0; i < 2; i++) {
               if (!iter.hasNext()) {
                 stringParseError("Incomplete escape sequence", token, index);
  
positive.code:           }
            // A two-byte hex escape can't generate an invalid value.
            continue;
          } else if (identical(code, $u)) {
            int escapeStart = index - 1;
            index++;
            code = iter.next();
  
negative.code:     for(Iterator<int> iter = string.iterator(); iter.hasNext(); length++) {
        index++;
        int code = iter.next();
        if (code == $BACKSLASH) {
          if (quoting.raw) continue;
          containsEscape = true;
          if (!iter.hasNext()) {
  