CSSTidy

I am very please with csstidy, especially that I am able to customize its
output to match my coding standards. The one thing I cannot customize is
the string after commas. I wish it were possible in a template, to set the
string which comes after a comma. For example, in my stylesheets I prefer:

.foo, .bar
{
font-face: serif, sans-serif;
}

- to -

.foo,.bar
{
font-face: serif,sans-serif;
}

(The extra space is optimized out in our compressed stylesheets, but I
prefer it for readability)

I understand that the csstidy project is currently inactive.