bug#65196: 28.2; gnus-group-make-nnir-group always returns "no messages"

["Loris Bennett" <loris.bennett@fu-berlin.de>]

Loris Bennett <loris.bennett@fu-berlin.de> writes:

> Loris Bennett <loris.bennett@fu-berlin.de> writes:
>
>> Eric Abrahamsen <eric@ericabrahamsen.net> writes:
>>
>>> "Loris Bennett" <loris.bennett@fu-berlin.de> writes:
>>>
>>>> Eli Zaretskii <eliz@gnu.org> writes:
>>>>
>>>>>> From: Loris Bennett <loris.bennett@fu-berlin.de>
>>>>>> Date: Thu, 10 Aug 2023 09:48:53 +0200
>>>>>> 
>>>>>> 
>>>>>> After upgrading Debian from 11 to 12, gnus-group-make-nnir-group always
>>>>>> says that the search group contains no messages, even though there are
>>>>>> in fact messages in the original group which contain the string searched
>>>>>> for.
>>>>>> 
>>>>>> In *Messages* somethin like the following will appear:
>>>>>> 
>>>>>>   Opening server fu_exchange
>>>>>>   Searching nnimap+fu_exchange:HPC...done
>>>>>>   Group nnselect:nnselect-87jzu3z7wb.fsf contains no messages
>>>>>> 
>>>>>> The configuration in init.el is as follows:
>>>>>> 
>>>>>>   (setq user-mail-address "loris.bennett@fu-berlin.de")
>>>>>> 
>>>>>>   (setq message-send-mail-function 'smtpmail-send-it)
>>>>>>   (setq smtpmail-smtp-server "mail.zedat.fu-berlin.de")
>>>>>>   (setq smtpmail-smtp-service 587)
>>>>>> 
>>>>>>   (setq gnus-select-method '(nntp "news.fu-berlin.de"))
>>>>>>   (setq gnus-secondary-select-methods
>>>>>>         (quote
>>>>>>          ((nnimap "fu_exchange"
>>>>>>                   (nnir-search-engine imap)
>>>>>>                   (remove-prefix "nnimap")
>>>>>>                   (nnimap-address "mail.zedat.fu-berlin.de")
>>>>>>                   (nnimap-record-commands t)
>>>>>>                   (nnimap-inbox INBOX)
>>>>>>                   (gnus-message-archive-group "nnimap+fu_exchange:Gesendete Elemente")))))
>>>>>> 
>>>>>> The same problem occurs with nntp groups (not configured in this test).
>>>>>> 
>>>>>> Unfortunately that is all the information I can provide, although I can
>>>>>> see that it is probably insufficient to identify the problem.
>>>>>
>>>>> Andrew, any comments?  Is this perhaps already fixed in Emacs 29?
>>>>
>>>> Further investigation reveal that this is not a general issue, but is
>>>> related to the specific select methods.
>>>>
>>>> For my work setup I actually have, in addition to the settings above
>>>>
>>>>   (nntp "fu_news"
>>>>         (nntp-address "news.fu-berlin.de")
>>>> 	(remove-prefix nntp)
>>>> 	(gnus-message-archive-group "nnimap+fu_exchange:Gesendete Elemente"))) 
>>>>
>>>> Searching in newgroups subscribe to via the above also always returns no
>>>> messages.
>>>>
>>>> However, in my private setup I have various email providers, such as GMX:
>>>>
>>>>          (nnimap "gmx"
>>>>                   (nnimap-stream tls)
>>>>                   (remove-prefix "nnimap.")
>>>>                   (nnimap-record-commands t)
>>>>                   (nnimap-address "imap.gmx.com"))
>>>>   
>>>> If I add this to my work setup, search results within folders in the GMX
>>>> account *do* produce results.  Searching within the Exchange folder or the
>>>> NNTP groups still fails. 
>>>>
>>>> Is there anything I can do to help debug the problem?
>>>
>>> For the exchange server, you should just remove the `nnir-search-engine`
>>> setting from the definition, it should work find by default.
>>>
>>> I don't believe search works for nntp at all -- did it used to?
>>
>>
>> Hmm, perhaps you are right.  Maybe it never did.  It certainly doesn't
>> work on a third laptop with Emacs 27.1.  Perhaps I am just confusing
>> newsgroups and mailing lists (and mailing list posing as newsgroups via
>> Gmane) and it was actually just working for the mailing lists.
>>
>> With init.el containing just
>>
>> (setq gnus-select-method '(nntp "news.fu-berlin.de"))
>> (setq gnus-secondary-select-methods
>>       (quote
>>        ((nnimap "gmx"
>>                 (nnimap-stream tls)
>>                 (nnimap-address "imap.gmx.com"))
>> 	(nnimap "fu_exchange"
>>                 (nnimap-stream tls)
>> 		(nnimap-address "mail.zedat.fu-berlin.de")))))
>> (custom-set-variables
>>  ;; custom-set-variables was added by Custom.
>>  ;; If you edit it by hand, you could mess it up, so be careful.
>>  ;; Your init file should contain only one such instance.
>>  ;; If there is more than one, they won't work right.
>>  '(gnus-verbose 10))
>> (custom-set-faces
>>  ;; custom-set-faces was added by Custom.
>>  ;; If you edit it by hand, you could mess it up, so be careful.
>>  ;; Your init file should contain only one such instance.
>>  ;; If there is more than one, they won't work right.
>>  )
>>
>> Searching within the GMX mailbox works but not in a newsgroup and the
>> Exchange mailbox.  The following is shown in *Messages*:
>>
>> Opening server gmx
>> Searching nnimap+gmx:Family...done
>> Fetching headers for nnselect:nnselect-871qg4g5d5.fsf...
>> nnimap read 0k from imap.gmx.com
>> Fetching headers for nnselect:nnselect-871qg4g5d5.fsf...done
>> Sorting threads...done
>> Generating summary...done
>> Retrieving newsgroup: nnselect:nnselect-87zg2seqsg.fsf...
>> Opening server fu_exchange
>> Searching nnimap+fu_exchange:HPC...done
>> Group nnselect:nnselect-87zg2seqsg.fsf contains no messages
>> previous-line: Beginning of buffer
>> Retrieving newsgroup: nnselect:nnselect-87y1iceqsc.fsf...
>> nnselect-run: gnus-search-run-query on ((search-query-spec (query . emacs) (raw)) (search-group-spec (nntp:news.fu-berlin.de comp.emacs))) gave error (gnus-search-config-error gnus-search-config-error No search engine configured for nntp:news.fu-berlin.de)
>> Group nnselect:nnselect-87y1iceqsc.fsf contains no messages
>>
>> So I seem to be missing a search engine for the newsgroup, but as we
>> have established, that probably never worked.  However, the search in
>> the Exchange mailbox just fails without further information, and that
>> definitely did used to work.
>
> Apparently Exchange does not like the character set being used.  This is
> the error message that Exchange generates:
>
>   SEARCH CHARSET UTF-8 TEXT hpc,"R=""6487 NO [BADCHARSET (US-ASCII)] The specified charset is not supported."
>
> I don't quite understand the error, as I would not think US-ASCII was a
> bad charset.  I assume it is more likely that my using a locale with
>
>   LANG=en_US.utf8
>
> might be the problem.  This may have been different before I updated
> Debian.
>
> If I search for a string such as "Bestätigung" in a folder belonging to
> the GMX mail box, this also erroneously produces an empty result set.
>
> So it looks like it is not an actually problem with Gnus as such.

The problem seems to have been resolved by Eric here:

  https://www.mail-archive.com/info-gnus-english@gnu.org/msg14117.html

This works for me.

Did the change make it into Gnus?

Anyway, thanks for the solution!

Cheers,

Loris

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