Problem with gnus-registry-grep-in-list

[Joao Cachopo <joao@cachopo.org>]

Hi!

Today I've tracked down a problem that has been bugging me for some time
now.

I use gnus-registry-split-fancy-with-parent to split the replies to the
messages that I send into the proper folder.

Most of the times, my original message is GCCed into some specific
group, but sometimes it is archived into my nnml:sent.mail.* groups.
In this last case, however, I don't want to split the replies into the
sent.mail group.

Therefore, I added "sent.mail" to gnus-registry-unfollowed-groups.
But still, the replies are split into the sent.mail group.

I've found the problem in the function gnus-registry-grep-in-list, which
is called by the function gnus-registry-follow-group-p:

   (defun gnus-registry-follow-group-p (group)
     "Determines if a group name should be followed.
   Consults `gnus-registry-unfollowed-groups' and
   `nnmail-split-fancy-with-parent-ignore-groups'."
     (not (or (gnus-registry-grep-in-list
               group
               gnus-registry-unfollowed-groups)
              (gnus-registry-grep-in-list
               group
               nnmail-split-fancy-with-parent-ignore-groups))))
   
As you can see, the gnus-registry-grep-in-list is called twice with the
group that we want to see whether it should be followed or not and a
list of regexps to ignore.  Yet, if we look into the
gnus-registry-grep-in-list function:

   (defun gnus-registry-grep-in-list (word list)
     (when word
       (memq nil
             (mapcar 'not
                     (mapcar
                      (lambda (x)
                        (string-match word x))
                      list)))))
   

The string-match function is called with the regexp in the second
argument, rather than the first.

Actually, according to the CVS logs, this was a deliberate change made
in revision 7.37:

   date: 2007/09/12 09:16:25;  author: tzz;  state: Exp;  lines: +3 -3
   (gnus-registry-unfollowed-groups): Add INBOX to the
   list of groups not followed by default.  Fix type to be regexp.
   (gnus-registry-grep-in-list): Fix inverted parameters to string-match.

As the gnus-registry-grep-in-list function is used in one more place
(the function gnus-registry-find-keywords), I'm not sure that swapping
the arguments of the string-match again will not break this other
functionality.

Can someone comment on this (and fix it, please)?

Best regards,
-- 
João Cachopo