twitter/bootstrap — pull request #4763 by Luis-TP (2012-08-27 23:19:56+00:00)
Title: 2.1.1 wip

Added .box-shadow mixin that can take infinite, comma delimited, shadows. You no longer need to escape multiple shadows. This further allows for evaluations to occur within the passed shadow.

Before:
.box-shadow( ~"inset 1px 0 0 rgba(255,255,255,.125), inset 0 1px 0 rgba(255,255,255,.2)" );

After:
.box-shadow( inset 1px 0 0 rgba(255,255,255,.125), inset 0 1px 0 rgba(255,255,255,.2) );

Shadow with evaluation:
.box-shadow( inset 0 1px 1px rgba(0,0,0,.075), 0 0 6px lighten(@borderColor, 20%) );