gnus-extra-headers and gnus-summary-limit-to-extra (was: nnimap and sticky cache)?

[David Abrahams <dave@boostpro.com>]

on Sun Mar 29 2009, Tassilo Horn <tassilo-AT-member.fsf.org> wrote:

> David Abrahams <dave@boostpro.com> writes:
>
> Hi David,
>
>>>>> Do you use the agent for you imap server?
>>>>
>>>> Yup.  But even if I turn the agent off I still see this problem.
>>>
>>> As Tassilo already said, turn the agent off and delete the agent
>>> files still in ~/News/agent. Next, you could try to set the server
>>> variable nnimap-nov-is-evil for your nnimap server definition and
>>> also delete all overview files for the server (usually
>>> ~/News/overview/nnimap/SERVER). (I think all of this is safe to do,
>>> but better keep a backup when deleting stuff from ~/News).
>>
>> OK, did all that.  Unfortunately nothing I do seems to make it
>> possible for Gnus to limit to a particular regexp in the Message-Id
>> field.  What am I missing?
>
> How is that related to phantom articles and the agent?

Well, it's not.  I merely thought that was the problem, i.e. I assumed
Gnus didn't have a cache of that field.

> Anyway, you should be able to limit to the message-id using `/ h
> Message-Id: <regexp>'.

Cool, thanks.  But why doesn't this work with gnus-extra-headers?

-- 
Dave Abrahams
BoostPro Computing
http://www.boostpro.com