Re: gnus uses a cache? And how it affects mairix searches...

[Dan Christensen <jdc@uwo.ca>]

Eric Abrahamsen <eric@ericabrahamsen.net> writes:

> Eric Abrahamsen <eric@ericabrahamsen.net> writes:
>
>> Andreas Schwab <schwab@linux-m68k.org> writes:
>>
>>> Dan Christensen <jdc@uwo.ca> writes:
>>>
>>>> In gnus.el, it doesn't list nnmairix at all, but somehow when using
>>>> nnmairix, an entry for nnmairix gets added to this list, without the
>>>> virtual keyword (see below).
>>>
>>> diff --git a/lisp/nnmairix.el b/lisp/nnmairix.el
>>> index 0cef699..b2f74e3 100644
>>> --- a/lisp/nnmairix.el
>>> +++ b/lisp/nnmairix.el
>>> @@ -417,7 +417,7 @@ Other back ends might or might not work.")
>>>  
>>>  (nnoo-define-basics nnmairix)
>>>  
>>> -(gnus-declare-backend "nnmairix" 'mail 'address)
>>> +(gnus-declare-backend "nnmairix" 'mail 'address 'virtual)
>>>  
>>>  (deffoo nnmairix-open-server (server &optional definitions)
>>>    ;; just set server variables
>>>
>>> Andreas.
>>
>> After look at this for a while, I do think this is the right solution --
>> what do you all think? Can someone apply this change?
>
> Oh never mind, I guess I didn't look long enough. For any backend
> declared as virtual, `gnus-cache-possibly-enter-article' will use
> `nnvirtual-find-group-art' to get the real group name.
>
> That means that if a backend is declared 'virtual but isn't actually
> nnvirtual, the caching mechanism will use the wrong lookup function.

I don't follow you.  Isn't the relevant function gnus-backlog-enter-article,
which skips the backlog for groups that are declared virtual?

I haven't actually tested the patch and instead simply disabled the
backlog entirely, but I suspect the patch will work.

Dan