Re: Gnus sometimes reports new messages but not showing them on IMAP server

[Eric Abrahamsen <eric@ericabrahamsen.net>]

Xiyue Deng <manphiz@gmail.com> writes:

> Xiyue Deng <manphiz@gmail.com> writes:
>
>> Eric Abrahamsen <eric@ericabrahamsen.net> writes:
>>
>>> Greg Troxel <gdt@lexort.com> writes:
>>>
>>>> Arash Esbati <arash@gnu.org> writes:
>>>>
>>>>>> I've focused on figuring out why the active number goes wrong, but in
>>>>>> the interest of pragmatism it might be better just to make sure that
>>>>>> nnimap always does the equivalent of "M-g" at Gnus startup.
>>>>>
>>>>> That might be a good compromise.
>>>>
>>>> Agreed.  It seems obvious (said knowing that's dangerous) that on
>>>> starting up the program, it's best not to rely on state that could be
>>>> wrong.   That's tricky, because mail programs keep messages and don't
>>>> refetch them, but relying on counts of unread seems very trouble prone,
>>>> vs "I have this message body and the timestamp matches so I won't fetch
>>>> it."
>>>>
>>>> I think it would also be good to separate
>>>>
>>>>    check for new
>>>>
>>>>    get all the messages that are there
>>>>
>>>>    really rescan and don't believe state
>>>>
>>>> in terms of being much louder about the differences.  I have the
>>>> impression that the assembled gnususers here are at least somewhat hazy
>>>> on those boundaries.  At least I am.
>>>
>>> I think this is an artifact of Gnus starting out as a newsreader, and
>>> adding email capability later. In a NNTP context, the read/unread
>>> message count is entirely private to your local machine, and something
>>> you can manipulate at will. In an IMAP context, it's very much a part of
>>> multi-machine state. Gnus should always defer to the remote server,
>>> particularly at start up. I do wish I knew where the bug was coming
>>> from, though.
>>>
>>>
>>>
>>
>> This makes much sense.  I'll try M-g the next time this happens.  Thanks
>> everyone!
>>
>> Also I would expect the equivalent of M-g to happen on startup so that
>> there are less surprises.
>
> So the issue Greg described just happened again that an empty
> folder/topic "Trash" from one of my outlook accounts just shown 38
> unread messages and selecting it fails with "Can't select group", while
> other clients like Thunderbird shows 0 in it.  I have tried "M-g" and it
> doesn't help unfortunately :(
>
> Any more ideas for debugging?

Maybe move a message into the folder, then move it back out? I'll try to
get to debugging this area of Gnus in the next few weeks...