In 1.5.2, the CoffeeScript filter is broken. For example:

:coffeescript
alert 'hello world'

This results in the following JavaScript being generated:

<script type='text/javascript'>
#<![CDATA[
(function() {
alert('hello world');
}).call(this);

#]]>
</script>

Which doesn't work in Firefox 5.0.1:

Error: illegal character
Source File:http://localhost:9000/
Line: 7, Column: 2
Source Code:
#<![CDATA[

It doesn't seem to like the # character. I get this error in Safari as well.