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From: David Engster <deng@randomsample.de>
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Subject: Re: keeping killed groups out of gnus-group-jump-to-group
Date: Tue, 24 May 2011 15:51:00 +0200
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In-Reply-To: <87ipt189e9.fsf@ericabrahamsen.net> (Eric Abrahamsen's message of
	"Mon, 23 May 2011 16:11:26 -0400")
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Eric Abrahamsen writes:
> Very simply: I'm using a mairix server, and ido for all autocompletion.
> The mairix server includes a complete list of all my nnmail groups,
> killed, and they all show up when I hit 'j' to jump to a group, usually
> *before* the real nnmail group, which makes it hard to use. I don't know
> where the list of groups is created -- is there a way I can have it
> filter out killed groups?

I don't know either. You could use an advice to at least filter the
nnmairix groups:

(defadvice gnus-group-completing-read (before remove-nnmairix-groups activate)
  (unless collection
    (mapatoms
     (lambda (g)
       (unless (string-match nnmairix-group-prefix (symbol-name g))
	 (push g collection)))
     gnus-active-hashtb)))

It's not nice, but it should work...

-David