Re: Backend writing

[prj@po.cwru.edu (Paul Jarc)]

Simon Josefsson <jas@extundo.com> writes:
> I think nnmaildir is different though, don't you hide the renumbering
> from Gnus (by translating back and forth between old and new
> numbering)?

I have external, non-numeric article identifications that never change
for a given article during its lifetime.  Gnus never sees those; I
translate them to article numbers.  That mapping does change from one
Gnus session to another, to keep the numbers small and consecutive.

> Nnimap doesn't, it simply present the servers article numbers to
> Gnus and hopes for the best.  (And assuming uidvalidity doesn't
> change, the IMAP design guarantee that Gnus will be happy.  Problem
> is when uidvalidity change...).

Ah, ok.  So the only IMAP-level identification of an article is
subject to change during an article's lifetime?  Or is there another,
non-volatile piece of identification that just isn't used?


paul