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

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

Julien Cubizolles <j.cubizolles@free.fr> writes:

> "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:
>
> (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")))))
>

I finally got it working with :

--8<---------------cut here---------------start------------->8---
(nnmaildir "Academie"
              (directory "/home/wilk/email/Maildir-mbsync/Academie")
	      (gnus-search-engine gnus-search-notmuch
				  (remove-prefix "/home/wilk/email/Maildir-mbsync/Academie"))
--8<---------------cut here---------------end--------------->8---

Don't know what's different except the explicit "/home/wilk/" instead of
"~/". Maybe I tweaked something else under the hood during my various changes…

-- 
Julien Cubizolles