On Wed 17 at 01:21 PM -0700, Gary Johnson <garyj...@spocom.com> wrote:
> This highlighting is determined by the file > $VIMRUNTIME/syntax/muttrc.vim. Perhaps yours is old and contains some > bugs or does support the version of mutt you're using. Excellent point. I grabbed the latest muttrc.vim file (dated 2012-02-02) from <http://www.vim.org/scripts/script.php?script_id=1479>, stuck it in ~/.vim/syntax/muttrc.vim, and it totally solved the highlighting problem.