Re: gnus marks nonexistent articles

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

Simon Josefsson <jas@extundo.com> wrote:
> Nnimap tries hard to not reset Gnus' marks but only update them with
> correct information from the server.  So if Gnus thinks a non-existing
> article has some set of marks, nnimap never changes it.

Ok.  nnmaildir is pushier.

> 		  ;; we can't return '(1) since this isn't a "list of ranges",
> 		  ;; and we can't return '((1)) since g-list-of-unread-articles
> 		  ;; is buggy so we return '((1 . 1)).
> 		  seen (if (and (integerp (car seen))
> 				(null (cdr seen)))
> 			   (list (cons (car seen) (car seen)))
> 			 seen))

Are you sure '(1) wouldn't work?  A list of ranges can look like
'(1 (3 . 4)).  nnmaildir doesn't defend against this, and I don't
think I've seen any problems because of it.

> If it is that simple to fix it, I'm for it.

Will do.

> OTOH it might be a good property that backends should never update
> marks on server-non-existing articles; it would allow Gnus to have
> local articles using those article numbers.

I think if that ever happens, Gnus should not trust the backend about
marks for those article numbers anyway, so it shouldn't matter which
marks the backend says those article numbers have.  Gnus can always
restore the missing marks that it knows about after asking the backend
for the marks it knows about.


paul