Re: Holes in article sequence

[Lars Magne Ingebrigtsen <larsi@gnus.org>]

Kai.Grossjohann@CS.Uni-Dortmund.DE writes:

> What about having the backend look for the articles actually in the
> group, and then intersecting this set with the set of
> potentially-to-be-expired articles, then only iterating over that
> intersection?

Yes.  But the potentially costly operation is the "find all the
articles in the current group" thing.  For instance, nnfolder will
have to search through the folder, tallying all the messages.  If this
is in response to a total-expiry thing, then that is ok, since
nnfolder will have to do that anyway, but if it's a different expiry
policy, then the list that nnfolder is handed is much, much smaller.

So what is the best way kinda depends on the number of articles the
backend is asked to expire.

-- 
(domestic pets only, the antidote for overdose, milk.)
  larsi@gnus.org * Lars Magne Ingebrigtsen