borismus/markdown-preview — pull request #21 by benjie (2012-08-22 14:02:14+00:00)
Title: Prevent matching "*.md.html" in URLs.

For example the PhoneGap documentation:

http://docs.phonegap.com/en/2.0.0/guide_getting-started_index.md.html

Is detected (incorrectly) as Markdown, making it extremely hard to read.