bug#21182: 25.0.50; gnus: every other unread message is marked as read on each nnimap group refresh

[Nix]

On 7 Feb 2016, Lars Ingebrigtsen told this:

> Nick Alcock <nix@esperi.org.uk> writes:
>
>> This happened after my first Emacs update for nearly a year (a bit of a
>> 'big bang'), so it could have come from almost any change to nnimap
>> since September last year. I'll do a bisection and hunt for it. (It's
>> not like I can do any more damage to my imap read marks than I already
>> have! I wanted to get to 'inbox zero', but not this way...)
>
> Are you still seeing this problem?

It's hard to say -- I reverted the patch locally immediately. The
problem is that whenever this goes wrong, 50% of my unread email gets
marked as read, with no obvious way to reverse this. This is rather a
high price to pay for replicating a bug :)

I have some sacrificial folders I could give up to the cause -- I'll see
if I can make things go wrong with them in the next day or so.

-- 
NULL && (void)