plasticboy/vim-markdown — pull request #30 by mattnworb (2012-08-28 21:12:30+00:00)
Title: Allow whitespace between three backticks and language name in GFM code

Github Flavored Markdown seems to allow whitespace between the three backticks to start a code block and the name of the language the code is in.

Some guides on using [Markdown and GFM code blocks](http://octopress.org/docs/blogging/code/) seem to encourage a space between the backticks and language name as if it was standard.

This can be supported in the syntax file with a simple addition of `\s*` before `\w*`. Without this the presence of whitespace between the backticks and the language name screws up color highlighting for subsequent non-code sections of the document.