illegal character error with "0x60" [`(Unicode Character 'START OF GUARDED AREA' (U+0096))]

[commonsuppliz]

I am trying to js html5 complie code at http://codepen.io/waisbren89/pen/gwvVpP

Rhino throws

---------Rhino Evaluator Detail----------
Message: illegal character (#102)
Source :
Details: illegal characterLineNumber :102
Column :26

<script> var s1 = `hsla(222,100%,11%,11)`; document.write(s1); </script>

This works in Chrome, Firefox and Edge.
Rhino needs to handle 'START OF GUARDED AREA' (U+0096) correctly.

[sainaen]

This is a duplicate of #325.
Character with a code 0x60 (or U+0060, U+ notation is also in hex) is a grave accent or a backtick. It's a part of Template Literals feature that is not supported by Rhino right now.