Re: gnus uses a cache? And how it affects mairix searches...

[Eric Abrahamsen <eric@ericabrahamsen.net>]

Dan Christensen <jdc@uwo.ca> writes:

> Dan Christensen <jdc@uwo.ca> writes:
>
>> [Sorry to hijack the thread.  Subject adjusted.]
>>
>> James Cloos <cloos@jhcloos.com> writes:
>>
>>> There is some caching of articles w/in a given session, but nothing I'm
>>> aware of which would survive a restart.
>>
>> Since upgrading Ubuntu and Gnus, I've noticed that the results of
>> nnmairix searches infiltrate subsequent search results.  More precisely,
>> the second time I do a search, the summary buffer looks correct, but for
>> some of the articles, when I select them the *Article* buffer shows the
>> articles from the previous search.  The third search may show article
>> buffers from the first or second search (or both).
>>
>> My search results are stored in a local imap folder (dovecot), and I
>> have verified that on disk the correct articles are stored.  I have also
>> verified that if I connect to dovecot via telnet, it displays the
>> correct article bodies.  I am not using the agent (as far as I know).
>>
>> I have also tried various nnmairix keystrokes to redo searches, etc,
>> and none of them helped.
>>
>> Any idea why this is happening?  nnmairix used to work beautifully for
>> me.
>>
>> Dan
>
> I finally figured this out.  Setting gnus-keep-backlog to nil solved
> the problem.  It turns out that by default, gnus caches the most recent
> 20 articles you have viewed, rather than contacting the server again.
> This is true even if you exit and reenter a summary buffer.
>
> Maybe nnmairix should remove articles from this cache when it creates
> a search folder?  Or bind this variable to nil in nnmairix groups?
>
> Dan

Can you or someone else using nnmairix tell me if calling
(gnus-virtual-group-p "nnmairix:your group name") returns t? It's true
for nnvirtual and nnir groups, so that function might make a good guard
inside `gnus-backlog-enter-article'.

Eric