Maintaining the list of existing articles for nnimap

Maintaining the list of existing articles for nnimap

[Lars Ingebrigtsen]

I was thinking about finally implementing keeping track of existing
articles in IMAP folders.  This requires that all nnimap groups that
don't have this data do a complete refresh (once), which might be slow,
but that's OK.

The bigger problem is that if you start Ma Gnus, get the
`(exist (100 . 200))' data in your newsrc, and then start No Gnus, which
doesn't update this, and then start Ma Gnus again, then Ma Gnus will
think that the articles that arrived while you were using No Gnus
doesn't exist.

That's no fun.

Hm...  Gnus could check whether `gnus-newsrc-file-version' is less than
Ma Gnus, and if so, it could delete all `exists' parameters from the
.newsrc.eld, and let Ma Gnus re-sync the data.  That would solve the
problem, but be quite slow if one is switching back and forth a lot...

Hm...  I dunno...

-- 
(domestic pets only, the antidote for overdose, milk.)
  http://lars.ingebrigtsen.no  *  Sent from my Rome

Re: Maintaining the list of existing articles for nnimap

[Andreas Schwab]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> The bigger problem is that if you start Ma Gnus, get the
> `(exist (100 . 200))' data in your newsrc, and then start No Gnus, which
> doesn't update this, and then start Ma Gnus again, then Ma Gnus will
> think that the articles that arrived while you were using No Gnus
> doesn't exist.

How about storing the complement of the set?

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."

Re: Maintaining the list of existing articles for nnimap

[Lars Ingebrigtsen]

Andreas Schwab <schwab@linux-m68k.org> writes:

> How about storing the complement of the set?

That would help a bit, but articles that should have been discovered as
non-existing by No Gnus while doing `g' won't be added to the list.

But having a slightly non-correct "non-existant" list would not be as
disastrous as having a non-correct "existant" list, so perhaps that's
the best solution, anyway.  Hm...

-- 
(domestic pets only, the antidote for overdose, milk.)
  http://lars.ingebrigtsen.no  *  Sent from my Rome