visionmedia/css-parse — pull request #28 by fgnass (2013-05-18 22:24:16+00:00)
Title: Add option to include line and column numbers

When `{ loc: true }` is passed as second argument all `rule` nodes will include a `loc` property that contains the line and column number of the first selector. This info is read by css-stringify and can be used to generate a source-map.