Preprocessing CSS

[Andrei Alexandrescu via Digitalmars-d]

Found this on reddit: 
http://blog.00null.net/post/144763147991/using-gnu-m4-as-a-css-pre-processor. 
I found it interesting because I found it useful to preprocess our 
style.css on dlang.org with ddoc. Somehow that got lost a while ago. How 
can I find the rename style.css -> style.css.dd and then back on github? 
Thx! -- Andrei