> Hard to answer your question without knowing what that comment package
   > is or where to get it.  I don't see it in Emacs and I don't see it on
   > ELPA.  It's hard to know what's wrong with comment-mode-alist without
   > seeing its definition.


Ok, fair enough. I thought given that Noah Friedman's packages are
around since the beginning of the 90 they are widely known.

Here is a link
http://www.splode.com/~friedman/software/emacs-lisp/src/comment.el