Great extension for rainbow. Makes it really stand out. Just one real problem: The zero-width space get copied to clipboard and result in an "Illegal character" error in JavaScript. Probably other languages are concerned by this, too.

So, it would be great to find a replacement or another solution. For the time, I've replaced the ​ with an empty string. Empty lines are removed when copied to clipboard, but that better than having a broken code.

Hi

This addition to rainbow is great, but it's breaking multi-line comments with embedded languages.

If you use the latest version of rainbow with your script and the following code, you'll see what I mean. Typically the first line is seen as a comment. The rest just shows up as "line-code."

Example code you can try is below, and you can also check this fiddle

<pre><code data-language="html">&lt;script&gt;
/* J stuff */
jQuery(function ($) {
    $(".rump").click(function () {
        $(".underwear").toggleClass('soiled');
    });
});
&lt;/script&gt;

&lt;style&gt;
/*-------------------------------------
                  Style stuff
-------------------------------------*/
.foo { color: brown }
.bar { color: yellow }

/* blah */
.snow:before { background-color: #eee }
.snow:after { background-color: yellow }
&lt;/style&gt;

&lt;?php
/*
PHP Comment
*/
function test_function() { // blah
    if ( $x == $y ) {
        do('something');
    }
    else {
        do('something_else');
    }
}
?&gt;</code></pre>

Allow users to specify the beginning line number of a segment of code they wish to highlight. At the moment from what I understand the line numbers only support beginning from zero.