2001-11-25 ShengHuo ZHU <zsh@cs.rochester.edu>
* gnus-util.el (gnus-directory-sep-char-regexp): New.
* gnus-score.el (gnus-score-find-bnews): Sync with Gnus CVS.
* mm-util.el: Sync.
* gnus-sum.el (gnus-summary-limit-to-subject): An exclusion version.
(gnus-summary-limit-to-author): Ditto.
(gnus-summary-limit-to-extra): Ditto.
(gnus-summary-find-matching): Support not-matching argument.
* message.el (message-wash-subject): Use `insert' rather than
`insert-string', which is deprecated.
From Kai Gro\e,A_\e(Bjohann <Kai.Grossjohann@CS.Uni-Dortmund.DE>