Re: agent/imap offline reading

[Kai.Grossjohann@CS.Uni-Dortmund.DE (Kai Großjohann)]

Simon Josefsson <jas@extundo.com> writes:

> The default value is stored in the agent predicate file, so if we
> change the default the old default will still be in people's agent
> predicate file.  So people with old agent predicate files that upgrade
> to new gnus will start to download read articles.  The upgrade
> procedure could contain a step that wraps all old predicates in a (and
> read ,@OLD) but it isn't nice to do that without telling the user.
> And what if the user later downgrades?  I'm not sure what Gnus does
> given an unknown predicate.

Hm.  Can you make it so that predicates which do not refer to "read"
behave the same as now (only unread articles fulfill the predicate),
and that people have to do something to get the read articles, too?

Hm.  Lessee.  An agent predicate is a boolean combination of
conditions which is applied to each article, I guess.  Hm.  There it
is quite counterintuitive to specify such things.  Whee.

If the predicate does not contain the symbol `read' you could
interpret it as before, only if `read' is in there do you use the new
interpretation.  This is really ugly, though.

kai
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