Hi,

I recently noticed that nnmaildir.el contains Emacs-specific code,
namely calls to `write-region' where the seventh argument is used with
the semantics of "mustbenew", e.g.:

  (write-region (point-min) (point-max) file nil 'no-message nil 'excl)

On XEmacs however, the seventh argument is "coding-system".
Consequently, a call as above results in the error message "No such
coding system: excl" on XEmacs.

Attached is a patch which fixes the problem for me.

Greetings

-- 
Michael Piotrowski, M.A.                               <mxp@dynalabs.de>
Public key at <http://www.dynalabs.de/mxp/pubkey.txt>