bug#46019: 27.1.90; gnus-group-list improperly sorted, drops meaningful group

[Eric Abrahamsen <eric@ericabrahamsen.net>]

Eric Abrahamsen <eric@ericabrahamsen.net> writes:

> Juan José García Ripoll <juanjose.garciaripoll@gmail.com> writes:
>
>> The problem:
>>
>> - On a running Gnus instance, the list of groups in gnus-group-list is
>>   not properly sorted: dummy.group gets close to the end.
>>
>> Symptoms:
>>
>> - As a result, the first group in the list is never shown, except when
>>   going to the server list
>>
>> Steps to reproduce:
>>
>> In my site, a simple configuration to poll an IMAP server shows the
>> problem. This configuration is stored in launcher.el and ran with
>> "emacs -Q -l launcher.el"
>>
>> (require 'gnus)
>> ;; Passwords for my server
>> (setq auth-sources '("~/OneDrive/Library/dot.authinfo.gpg"))
>> (epg-find-configuration 'OpenPGP)
>> ;; Save configuration elsewhere, not to clobber my system
>> (setq gnus-directory "~/tmp/")
>> (setq gnus-startup-file (expand-file-name ".newsrc" gnus-directory))
>> (setq gnus-select-method '(nnnil ""))
>> (setq gnus-secondary-select-methods
>>       '((nnimap "work"
>>                 (nnimap-address "work.imap.server.com")
>>                 (nnimap-server-port 993)
>>                 (nnimap-stream ssl)
>>                 (nnimap-fetch-partial-articles t))))
>> (gnus)
>> (print gnus-group-list)
>>
>> What happens:
>>
>> - Emacs outputs a list of groups that begins with "nnimap+work:Trash",
>>   with dummy.group close to the end
>>
>> ("nnimap+work:Trash" "nnimap+work:Archive" ... "dummy.group" "nndraft:drafts")
>>
>> - When pressing 'L' to get the list of groups, Trash is removed, due to
>>   the code in gnus-group-prepare-flat
>>
>> (defun gnus-group-prepare-flat (level &optional predicate lowest regexp)
>>  ...
>>       ;; List living groups, according to order in `gnus-group-list'.
>>       (dolist (g (cdr gnus-group-list))
>>         (setq info (gnus-get-info g)
>> 	      group (gnus-info-group info)
>>
>> What should happen:
>>
>> - The list of groups should remain sorted, with dummy.group at the
>>   beginning
>
> This looks like a fairly straightforward error on my part (obviously at
> some point I thought the NEXT argument meant "insert after this"), but
> just to make sure I've got the right end of the stick -- does this only
> happen once, during group subscription? Or does the group stay missing
> across Gnus restarts.
>
> Probably the best thing to do would be just to get rid of the
> requirement to have a dummy group at all...

I've pushed a fix for this, and am closing the bug for now. If there's
still a problem here, please re-open.

Thanks,
Eric