font-lock haskell-mode

in XEmacs on qualified identifiers like Foo.bar with a period in them:

(warning/warning) Error caught in `font-lock-pre-idle-hook': (error No such face haskell-default-face)

or the minibuffer message: "Fontifying Baz.hs... aborted.aborted."

Here is a Patch.

also, don't forget to (require 'goto-addr)