   request(
        "text/plain;charset=\"u\\t\\f-8\"",
        "text/plain;charset=\"u\\t\\f-8\"",
        "charset in double quotes with backslashes that is UTF-8 does not change")
      request(
        "YO/yo;charset=x;yo=YO; X=y",
        "yo/yo;charset=UTF-8;yo=YO;x=y",
        "unknown parameters need to be preserved")
    </script>
  </body>
</html>
