Tumblr.vim is a project mainly written in Vim Script, it's free.
Syntax highlighting for Tumblr themes
This is a mirror of http://www.vim.org/scripts/script.php?script_id=3011
Syntax highlighting for Tumblr themes.
Screenshot: http://29.media.tumblr.com/tumblr_kz38v6harE1qz5urdo1_500.png Source: http://github.com/inky/tumblr/tree/master/vim/