Gnus keeps fetching read Articles from the Server

Gnus keeps fetching read Articles from the Server

[Eze Ogwuma]

[Synopsis] With gnus-asynchronous, gnus-keep-backlog and
gnus-use-cache all set Gnus still re-reads selected articles from the
server when they have previously been viewed with X u or MIME decoded.

Hello,

I'm trying to speed up the way gnus operates over a modem (this isn't
to do with Agent).

I've been using Gnus to read my mail and Knews to read my news via a
modem because it's much faster. Knews has a caching facility that will
allow it to create caches of read articles (a trail cache) and unread
articles (an ahead cache). 

I can then select an article that is in the ahead cache and read it
and I can go back and select an article that I have already read and
so is now in the trail cache and read that. Articles that are in the
either cache appear almost instantaneously.

I'm trying to recreate similar behavior with Gnus. That way I could
then use the one program to read mail and news from a variety of
sources. 

I am using this on some groups I subscribed to using G m with nntp as
the method.

I have been experimenting with (setq gnus-asynchronous t), (setq
gnus-keep-backlog t) and (setq gnus-use-cache t) in my .gnus file
though not necessarily always together.

However I find that if I view a uuencoded article with X u and then
decide to save with X U Gnus fetches the entire message from the
server again. I see the same thing if I view a MIME encoded message as 
well.

What I want is to have the previously seen article remain in the cache 
or the backlog buffer without my having to mark the article.

Does anyone have any suggestions?

-- 
Eze Ogwuma

Re: Gnus keeps fetching read Articles from the Server

[Felix Lee]

> [Synopsis] With gnus-asynchronous, gnus-keep-backlog and
> gnus-use-cache all set Gnus still re-reads selected articles from the
> server when they have previously been viewed with X u or MIME decoded.

yup.  I noticed this a while ago and didn't get around to
tracking it down until now.

the problem is, gnus gives articles to gnus-backlog only if
it fetched the article directly.  any articles that come out
of gnus-async don't make it into the backlog.

patch for qgnus 0.22:

*** gnus-art.el	1998/01/25 04:52:19	1.1
--- gnus-art.el	1998/01/25 04:53:29
***************
*** 2451,2456 ****
--- 2451,2459 ----
  	   ;; Check asynchronous pre-fetch.
  	   ((gnus-async-request-fetched-article group article (current-buffer))
  	    (gnus-async-prefetch-next group article gnus-summary-buffer)
+ 	    (when gnus-keep-backlog
+ 	      (gnus-backlog-enter-article
+ 	       group article (current-buffer)))
  	    'article)
  	   ;; Check the cache.
  	   ((and gnus-use-cache

Re: Gnus keeps fetching read Articles from the Server

[Eze Ogwuma]

Felix Lee <flee@teleport.com> writes:

> > [Synopsis] With gnus-asynchronous, gnus-keep-backlog and
> > gnus-use-cache all set Gnus still re-reads selected articles from the
> > server when they have previously been viewed with X u or MIME decoded.
> 
> yup.  I noticed this a while ago and didn't get around to
> tracking it down until now.

Thanks.

I was starting to think I was in peoples score files.

> the problem is, gnus gives articles to gnus-backlog only if
> it fetched the article directly.  any articles that come out
> of gnus-async don't make it into the backlog.

[...]


-- 
Eze Ogwuma