less/less.js — pull request #2169 by SomMeri (2014-08-27 16:05:15+00:00)
Title: Accept comments in @keyframe and after rule name

Eat up comments instead of calling them parse error:
* in `@keyframe` declaration #2059,
* after rule name before semicolon #826.

The comments are eaten instead of being printed into output, but it is better then crashing on them.