Re: problem with nnrss and slashdot

[joakim@verona.se]

I was able to solve this problem localy for slashdot, after some
research.

There are several related threads on this:

http://thread.gmane.org/gmane.emacs.gnus.general/63268

http://article.gmane.org/gmane.emacs.gnus.general/62613

Looking in nnrss-check-group, a message ID is sythesized out of an rss
article by means of printing the lisp representation to a string and
do a md5 on it. This md5 is used to determine if the article has
changed.

Slashdot includes tags like:

"( slash:department nil "development-has-to-come-from-somewhere") . "
"( slash:section nil "developers") . "
"( slash:comments nil "46") . "
"( slash:hit_parade nil "46,44,36,28,12,3,1") . "

The number of comments vary with each rss poll, which makes the
article appear new again.

I tried a local patch whitch filters away slash: tags before md5. This
works but isnt a general solution.

I think the best would be, given the reasoning in the threads above,
to allow both article-md5, and date-md5 methods, selectable on a feed
basis.



Mark Plaksin <happy@mcplaksin.org> writes:

> Dave Goldberg <david.goldberg6@verizon.net> writes:
>
>>>>>>> On Mon, 07 Aug 2006 12:44:58 +0200, joakim@verona.se said:
>>
>>> joakim@verona.se writes:
>>>> I recently upgraded gnus, and now the rss feed from slashdot get new
>>>> copies everytime i update the group. Any hints?
>>
>>> This problem remains. Is there anything I can do to help debug it?
>>> Specifically I'm having problems with the slashdot rss feed.
>>
>> Just yesterday I decided to give gnus a try as an rss reader and
>> slashdot was one of my test cases.  I see the same behavior as above.
>> However, I don't see it with a couple other feeds.  I also took a look
>> at the changelogs and nnrss doesn't seem to have changed in some time.
>> Assuming it did work correctly once, I suspect that slashdot has made
>> some change that gnus is not prepared for.
>
> For me it happens in most of my nnrss groups.  Not all of them but almost
> all of them.  So I think it's Gnus that changed and not all the RSS feeds.
>
> I hope to have time to debug the problem in the next week or three.
>
>
>

-- 
Joakim Verona
http://www.verona.se