Re: Changing Default News Server

[Ken Raeburn <raeburn@cygnus.com>]

Lars Magne Ingebrigtsen <larsi@ifi.uio.no> writes:

> I'll probably do something similar, though.  Going through all
> Message-ID's of all read and/or unread articles is out of the
> question.  Perhaps one could get kinda good results by going through a
> few groups and trying to guess how thorough one has to be?

Why?  It's not a common operation, it shouldn't be a big problem for
it to take a lot of time.  I think getting the Message-ID's of all
read articles is exactly the way to do it.  It may bring back some
articles that were expired on the old server and not on the new, but
that's almost certainly better than hiding unread articles, or
bringing back *lots* of read articles because the mechanism wasn't
thorough.

I've seen some perl code that operates exactly this way, though it
only works on the standard .newsrc, of course.