tdreyno/middleman — pull request #176 by bhollis (2011-12-01 04:15:56+00:00)
Title: A slight speedup in the sitemap extension by only scanning the source directory

This way sitemap will not scan through all the files in your project (including .git files and such) when it doesn't ever need to know about those files. This also includes a slight tightening of the regex for filtering paths for front_matter.