[web2py] plugin_wiki syntax highligting - how to use 2 CSS classes?

[Tom Atkins]

I'm using plugin_wiki to build a blog and wiki site.  (plugin_wiki is
fantastic for this - thanks Massimo!)

I would like to use a jQuery syntax highlighter instead of the built-in one.
Most of these highlighters require 2 CSS classes, eg:

<code class="syntax python">
def test():
    blah blah
</code>

If I use the markmin code syntax:

``
def test():
    blah blah
``syntax python

I can only get one CSS class.  (i.e. it doesn't work with spaces - to use
the built-in highlighter you write ``code_python)

Is there a way to get 2 CSS classes or which file I should change to achieve
this...

Thanks!