User blog comment:DaNASCAT/Update Your CSS and JavaScript To Speed Up Your Wiki/@comment-3508190-20120823051332

Testing this feature from the console it seems the URLs look like this:

/load.php?=debug=false&lang=en&mode=articles&skin=oasis&missingCallback=importArticleMissing&articles=File1.js|File2.js|File2.js&only=scripts

That means, this should work for CSS files:

@import url(/load.php?=debug=false&lang=en&mode=articles&skin=oasis&articles=File1.css|File2.css|File2.css&only=styles);

Can somebody with a 1.19.1 wiki to test this on, confirm this?