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From: Simon Josefsson <jas@extundo.com>
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Subject: Re: large .overview files in agentized nntp groups
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Bjørn Mork <bmork@dod.no> writes:

> Looks like this piece of code in gnus-agent-fetch-headers adds 
> all articles with the 'seen' mark to the fetch list:
>
>     ;; Add article with marks to list of article headers we want 
>     to fetch.  (dolist (arts (gnus-info-marks (gnus-get-info 
>     group))) (setq articles (gnus-range-add articles (cdr 
>     arts)))) (setq articles (sort (gnus-uncompress-sequence 
>     articles) '<))

Ouch, yes.  That code was added, because that if the articles are 
not fetched into the agent, when entering the group Gnus will 
notice that certain articles doesn't exists and remove the mark. 
So to kludge around that, the agent fetches all articles with 
marks (which could be useful anyway).  But it surely isn't useful 
with `seen' and `recent'.

I'm not sure what a good solution would be though.