[Haskell] Literate Haskell editing with Emacs and MMM: the $ operator

[Julian Gilbey]

I've been editing literate (LaTeX-based) Haskell code using Emacs and
MMM-mode, using the instructions posted in
http://www.haskell.org/pipermail/haskell/2006-April/017855.html

There's one annoyance, however: the $ operator in Haskell code ends up
being interpreted as the beginning of math mode, completely messing up
any font-lock colo(u)ring.

Has anyone else found this, and has anyone come up with a good
solution?

Thanks,

   Julian