milkypostman/markdown-mode — pull request #4 by Fuco1 (2013-01-14 18:46:15+00:00)
Title: Added `gfm-insert-code-block`. Inserts the ```lang\n|\n``` block

For github markdown. By default on `C-c C-s C-c` (I've noticed that "region commands" have C all the way -- if this isn't the right convention, please fix and tell me for the future).