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From: "Bruno Hertz" <spammer.go.home@gmail.com>
Newsgroups: gmane.emacs.gnus.user
Subject: Re: Couple of newbie nnrss questions (expiry, marks, caching).
Date: Thu, 14 Apr 2005 18:16:48 +0200
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bojohan+news@dd.chalmers.se (Johan Bockgård) writes:

> "Bruno Hertz" <spammer.go.home@gmail.com> writes:
>
>> Of course I now wonder whether it is subject to the usual expiry
>> mechanism.
>
> Yes.
>
>> how do you keep that cache lean?
>
> I use
>
> (setq gnus-total-expirable-newsgroups "\\`nnrss:")
>
> (setq nnmail-expiry-wait 7)
> (setq nnmail-expiry-wait-function
>       (lambda (group)
>         (cond ((string-match "spam" group)      3)
>               ((string-match "\\`nnrss:" group) 60)
>               (t                                nnmail-expiry-wait))))
>

Very nice, especially the way you implemented different expiry wait
times (I think that's what kept confusing me, that although those vars
carry 'nnmail' in their names they still apply to other backends as
well).

Thanks very much for your pointers, Bruno.