tmm1/pygments.rb — pull request #80 by mattn (2013-07-03 10:43:17+00:00)
Title: When runtime require '/bin/sh' for backtick on windows, ignore errors and use 'python' gracefully.

It seens that ruby-2.0.0 or some gems which uses on jekyll require `/bin/sh` for backtick (````) on windows.
But I don't have `/bin/sh` on my windows. Then, I hope pygments ignore errors, and use `python` gracefully.