guarded mixins

[Mariana Silva]

I need to use the last version of less (version 1.2.1).
I tested your last exe (version 1.2.2.0) and it gives me an error
using the "when" (conditional execution via guarded mixins
http://lesscss.org/#-mixins).

Thanks,
Mariana Silva

[Luke Page]

Guards were added to the js version in December.

I'm busy trying to finalise plugins and a sprite generator for the
moment, so it won't come soon unless someone else has the time to do
this work.