less/less.js — pull request #1559 by pedrocorreia (2013-09-20 11:18:07+00:00)
Title: Proposed solution for issue #1554. Adds supporto to the &amp; selector i...

I had a look with a more Javascript savvy colleague at the extend-visitor.js file and managed to get the & selector working when used in the extend function arguments. You can now refer to the parent of a selector with the & symbol.