From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.emacs.gnus.general/68349 Path: news.gmane.org!not-for-mail From: jidanni@jidanni.org Newsgroups: gmane.emacs.gnus.general Subject: Re: nnrss lacks basic crosspost detection; should use guid Date: Sun, 08 Mar 2009 08:20:43 +0800 Message-ID: <87fxho27c4.fsf@jidanni.org> References: <87eixghovc.fsf@windlord.stanford.edu> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1236471918 7129 80.91.229.12 (8 Mar 2009 00:25:18 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 8 Mar 2009 00:25:18 +0000 (UTC) Cc: ding@gnus.org To: rra@stanford.edu Original-X-From: ding-owner+M16788@lists.math.uh.edu Sun Mar 08 01:26:34 2009 Return-path: Envelope-to: ding-account@gmane.org Original-Received: from util0.math.uh.edu ([129.7.128.18]) by lo.gmane.org with esmtp (Exim 4.50) id 1Lg6qe-0006oK-Od for ding-account@gmane.org; Sun, 08 Mar 2009 01:26:32 +0100 Original-Received: from localhost ([127.0.0.1] helo=lists.math.uh.edu) by util0.math.uh.edu with smtp (Exim 4.63) (envelope-from ) id 1Lg6oX-0004Oa-Hg; Sat, 07 Mar 2009 18:24:21 -0600 Original-Received: from mx2.math.uh.edu ([129.7.128.33]) by util0.math.uh.edu with esmtps (TLSv1:AES256-SHA:256) (Exim 4.63) (envelope-from ) id 1Lg6lA-0004NO-NS for ding@lists.math.uh.edu; Sat, 07 Mar 2009 18:20:52 -0600 Original-Received: from quimby.gnus.org ([80.91.231.51]) by mx2.math.uh.edu with esmtp (Exim 4.69) (envelope-from ) id 1Lg6l8-0004By-6h for ding@lists.math.uh.edu; Sat, 07 Mar 2009 18:20:52 -0600 Original-Received: from caiajhbdcahe.dreamhost.com ([208.97.132.74] helo=homiemail-a4.dreamhost.com) by quimby.gnus.org with esmtp (Exim 3.36 #1 (Debian)) id 1Lg6lU-0003Wt-00 for ; Sun, 08 Mar 2009 01:21:12 +0100 Original-Received: from jidanni.org (122-127-33-215.dynamic.hinet.net [122.127.33.215]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by homiemail-a4.dreamhost.com (Postfix) with ESMTP id 35F454142B; Sat, 7 Mar 2009 16:20:46 -0800 (PST) X-Spam-Score: -2.6 (--) List-ID: Precedence: bulk Xref: news.gmane.org gmane.emacs.gnus.general:68349 Archived-At: RA> I'm fairly certain that's correct. One of the feeds I generate uses a RA> timestamp for the guid -- it's unique for that particular feed, but it's RA> definitely not going to be globally unique. Well, it turns out the only time a server can use is when the guid fully matches a vaild URL. I.e., the RSS standard has glued the Usenet etc. concept of unique Message-ID together with the concept of permanent URI. So now there is no way to say, "yes, message A in the feed X I provide, is the same as message A in feed Y that I provide", unless one is also willing to give a permanent URI. I suppose. See http://core.trac.wordpress.org/ticket/9280 Anyway, maybe nnrss should have a switch: (set nnrss-assume-all-guids-are-like-usenet-message-ids t)