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From: bruce@balilly.UUCP (Bruce Lilly)
Newsgroups: news.software.b
Subject: Re: C news aliases in the active file
Message-ID: <1991Feb5.015028.28975@blilly.UUCP>
Date: 5 Feb 91 01:50:28 GMT
References: <1991Jan28.170455.18630@cjsa.wa.com> <1991Jan29.205226.7456@zoo.toronto.edu> <1991Feb3.172937.7131@dms3b1.uucp>
Sender: news@blilly.UUCP (News Administrator)
Organization: Bruce Lilly, Flushing, NY
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In article <1991Feb3.172937.7131@dms3b1.uucp> dave@dms3b1.UUCP (Dave Hanna) writes:
>In article <1991Jan29.205226.7456@zoo.toronto.edu> henry@zoo.toronto.edu (Henry Spencer) writes:
>|In article <1991Jan28.170455.18630@cjsa.wa.com> jeff@cjsa.wa.com (Jeffery Small) writes:
>|>If someone crossposts an article to both of these groups, then C news
>|>generates two copies of the article in "comp.sys.3b1".  Both copies have
>|>the same message ID and in fact, the files are identical in the spool
>|>directory.
>|
>|In fact, if you look carefully, you will find that they are, in fact,
>|two links to the same file.
>|
>|>Is there a clean and simple way to eliminate the duplication of these
>|>articles?
>|
>|Nothing off-the-shelf.  A newsreader that respects the Xref header line
>|will only show you one of them anyway.  
>
>At least at this site, that is not so.  I'm running rn at patch level 47,
>(on a AT&T 3b1, Sys V)

Same configuration here.

>and it does seem to be properly handling normal cross-posted articles,
>(i.e., an article cross-posted in misc.forsale and misc.forsale.computers,
>when read in misc.forsale, was not shown to me in misc.forsale.computers),
>but it is definitely showing both copies of articles cross-posted in 
>unix-pc.general and comp.sys.3b1.

Use the 'v' command in rn to look at the headers. If there's no Xref:
line, something's wrong.  Also double-check the Newsgroups: line -- some
broken news posting software has been known to generate separate copies of
the posted article to each newsgroup.

>Can anyone validate Henry's statement, or do I have a configuration 
>problem in my version of rn?

There are/were some patches dealing with Xref's (I think the patches were
to C news).

--
	Bruce Lilly		blilly!balilly!bruce@sonyd1.Broadcast.Sony.COM