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

[Eli Zaretskii]

> 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?