minify css removes properties with var()

[HarmpieR]

when minifying css, properties which use a variable are removed.

[wishbone-productions]

i`m having the same issue, source of the problem goes down to use css minifier (http://code.google.com/p/cssmin/)

the class CssMinifier use by this packacge is only passing the source. It needs to parse a filter & plugin array to make it work.

Would be nice these could provided in the minify.config.php

[codemagicc]

I'm struggle with the same issue.
Please help me.
How to resolve it @wishbone-productions @HarmpieR @markcameron @gmarineau @nam-co