There is a LESS plug-in for PhpStorm
*.less files are indeed recognized, in that a little "LESS" icon appears next to the *.less files, but it appears that the "support" ends there. Code completion does not work for me as it does for *.css files. I assume it's supposed to right? What could be the possible source of this problem?
I'm using PhpStorm on Windows 7.
Edit: After spending a good amount of time on this question, I've found no solution, and posted it as a "bug" on YouTrack. Please also vote it up there, if you can't find an answer, and would like a fix to be implemented.