Lots of people like to use embedded gists which seem to work fine, but I use http://www.emacswiki.org/emacs/Htmlize http://www.emacswiki.org/emacs/Htmlize from

Lots of people like to use embedded gists which seem to work fine, but I use http://www.emacswiki.org/emacs/Htmlize http://www.emacswiki.org/emacs/Htmlize from Emacs.