less/less.js — pull request #1890 by roelvanduijnhoven (2014-02-20 15:26:29+00:00)
Title: Let `luma` follow spec

The `luma` function found in LESS is not implemented as defined in the specification (http://www.w3.org/TR/2008/REC-WCAG20-20081211/#relativeluminancedef).