Re: Gnus search engine returns "Group nnselect:nnselect-877cqbir7v.fsf contains no messages"

[Julien Cubizolles <j.cubizolles@free.fr>]

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


> I am also experiencing the same error.  My configuration had been
> working fine for years, but after updating Debian from 11 to 12 and
> hence Emacs from 27.1 to 28.2 I now have this problem.  The issue
> arises with both imap and nntp groups.
>
> This is what appears in *Messages* with gnus-verbose set to 10:
>
>   Retrieving newsgroup: nnselect:nnselect-87v8dpn1ch.fsf...
>   Opening server fu_exchange
>   Searching nnimap+fu_exchange:HPC...done
>   Group nnselect:nnselect-87v8dpn1ch.fsf contains no messages
>
Same problem here with Emacs 30.0.50.

The relevant parts of my config are:


--8<---------------cut here---------------start------------->8---
(setq gnus-search-default-engines
      '((nnml . gnus-search-notmuch)
	(nntp . gnus-search-notmuch)
	(nnimap . gnus-search-imap)
	(nnfolder . gnus-search-notmuch)
	(nndraft . gnus-search-notmuch)
	(nnarchive . gnus-search-notmuch)
        (nnselect . gnus-search-nnselect)
	(nnmaildir . gnus-search-notmuch)))

(setq gnus-search-use-parsed-queries t)

(setq gnus-secondary-select-methods
      '((nnmaildir "Academie" (directory "~/email/Maildir-mbsync/Academie")
		   (gnus-search-engine gnus-search-notmuch 
 		     		           (remove-prefix "~/email/Maildir-mbsync/Academie")))))
--8<---------------cut here---------------end--------------->8---

On a given group from the Academie maildir, I always get the "contains
no messages" whatever the query. notmuch returns plenty of messages
whose filenames, as given by ‘notmuch-show-stash-filename’ are of the
form:


--8<---------------cut here---------------start------------->8---
Stashed: /home/wilk/email/Maildir-mbsync/Academie/General/cur/1692854503.M508606P40464Q3.sadhill,U=40:2,
--8<---------------cut here---------------end--------------->8---


-- 
Julien Cubizolles