Re: duplicate items in nnrss groups

[Mark Plaksin <happy@mcplaksin.org>]

Jochen Küpper <jochen@fhi-berlin.mpg.de>
writes:

> On 14. Sep. 2006, Mark Plaksin wrote:
>
>> David Hansen <david.hansen@gmx.net> writes:
>>
>>> On Sun, 10 Sep 2006 22:25:04 +0200 Jochen Küpper wrote:
>
>>>> With this I get repeatedly the same entries listed as new. This
>>>> seems cto happen every time I press "g" *and* the date/time of the
>>>> xml-file is newer than at the previous update, or something
>>>> similar.
>
>>> If some RSS "expert" is reading this i would be glad to here which
>>> tags really indicate some new content and which are just more or
>>> less useless additions like the <slash:*> tags.
>
>> Perhaps no expert is chiming in because everybody thinks the current
>> plan is great: Use the title, description, and pubdate.
>
> Why do you add pubdate here? 
> The fact that it is used is the problem I describe above, not?

Maybe I misunderstood.  I thought the problem you described was because
caused by nnrss using the timestamp of the feed's cache ("feed name.el") on
your local disk.  By "pubdate" I meant the date included in each item in
the RSS feed itself.

Depending on the RSS version (I'm no expert) it might be "pubdate" or
"dc:date".  For example, here's Gmane's RSS item for your article:

  <item rdf:about="http://permalink.gmane.org/gmane.emacs.gnus.general/63744">
    <title>Re: duplicate items in nnrss groups</title>
    <link>http://permalink.gmane.org/gmane.emacs.gnus.general/63744</link>
    <description>

Why do you add pubdate here? 
The fact that it is used is the problem I describe above, not?

Greetings,
Jochen
</description>
    <dc:creator>Jochen Küpper</dc:creator>
    <dc:date>2006-09-14T19:40:37</dc:date>
  </item>