A problem with haskell-mode

Deling Ren rende@cs.orst.edu
Thu, 5 Sep 2002 20:59:27 -0700 (PDT)

Hi, all, I installed the latest version of Haskell mode for emacs.
Whenever I load haskell major mode by opening a haskell file, Xemacs gives
me the following error message:

(1) (error/warning) Error in `post-command-hook' (setting hook to nil):
(void-variable imenu--index-alist)

My Xemacs version is 21.4.8. It works well under GNU emacs though. Anybody
has an idea how to get around it? Thanks.