Re: 0.129 won't open empty folders

[Simon Josefsson <jas@pdc.kth.se>]

Matthias Johnson <penguin@research.att.com> writes:

> I've noticed that 0.129 doesn't like opening empty folders.  I have a
> number of inboxes that are fed via procmail.  Sometimes on startup
> they are empty and then nnimap just stops dead in its tracks with
> 
> Group {name of folder} is not uid-valid.
> 
> This also happens if all groups have something in them at startup and
> I delete all messages from on of my groups and then do a '1 g'.

UID-validity changes are difficult to handle in nnimap because nnimap
isn't in control of the data that should be updated in case of a
uidvalidity change, that's the reasons it explodes.

Empty groups seem to get a new uidvalidity value every time you query
the group, I wish this wasn't the case but there isn't much you can do
about it.

0.130 will interactively ask you if you want to proceed, it's not
perfect but slightly better than exploding...

I think Gnus need to have some concept of uidvalidity for this to work
as intended.