From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.emacs.gnus.general/46840 Path: main.gmane.org!not-for-mail From: Simon Josefsson Newsgroups: gmane.emacs.gnus.general Subject: Re: Why does Gnus generates Lines: header in mail? Date: Mon, 30 Sep 2002 13:23:58 +0200 Sender: owner-ding@hpc.uh.edu Message-ID: References: NNTP-Posting-Host: localhost.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: main.gmane.org 1033385092 13962 127.0.0.1 (30 Sep 2002 11:24:52 GMT) X-Complaints-To: usenet@main.gmane.org NNTP-Posting-Date: Mon, 30 Sep 2002 11:24:52 +0000 (UTC) Cc: "(ding)" Return-path: Original-Received: from malifon.math.uh.edu ([129.7.128.13]) by main.gmane.org with esmtp (Exim 3.35 #1 (Debian)) id 17vyfS-0003d3-00 for ; Mon, 30 Sep 2002 13:24:50 +0200 Original-Received: from sina.hpc.uh.edu ([129.7.128.10] ident=lists) by malifon.math.uh.edu with esmtp (Exim 3.20 #1) id 17vyex-0007Gp-00; Mon, 30 Sep 2002 06:24:19 -0500 Original-Received: by sina.hpc.uh.edu (TLB v0.09a (1.20 tibbs 1996/10/09 22:03:07)); Mon, 30 Sep 2002 06:25:00 -0500 (CDT) Original-Received: from sclp3.sclp.com (qmailr@sclp3.sclp.com [209.196.61.66]) by sina.hpc.uh.edu (8.9.3/8.9.3) with SMTP id GAA24769 for ; Mon, 30 Sep 2002 06:24:47 -0500 (CDT) Original-Received: (qmail 16263 invoked by alias); 30 Sep 2002 11:24:01 -0000 Original-Received: (qmail 16258 invoked from network); 30 Sep 2002 11:24:01 -0000 Original-Received: from 178.230.13.217.in-addr.dgcsystems.net (HELO yxa.extundo.com) (217.13.230.178) by gnus.org with SMTP; 30 Sep 2002 11:24:01 -0000 Original-Received: from latte.josefsson.org (yxa.extundo.com [217.13.230.178]) by yxa.extundo.com (8.12.6/8.12.6) with ESMTP id g8UBNwn2030588; Mon, 30 Sep 2002 13:23:58 +0200 Original-To: Stainless Steel Rat Mail-Copies-To: nobody X-Hashcash: 0:020930:ratinox@peorth.gweep.net:086c532de3185968 X-Hashcash: 0:020930:ding@gnus.org:37cd1f7c5ba6149b In-Reply-To: (Stainless Steel Rat's message of "29 Sep 2002 21:31:40 -0400") User-Agent: Gnus/5.090008 (Oort Gnus v0.08) Emacs/21.2 (i386-debian-linux-gnu) Precedence: list X-Majordomo: 1.94.jlt7 Xref: main.gmane.org gmane.emacs.gnus.general:46840 X-Report-Spam: http://spam.gmane.org/gmane.emacs.gnus.general:46840 Stainless Steel Rat writes: > * Simon Josefsson on Sun, 29 Sep 2002 > | X-* is blessed by the standard to contain experimental stuff, so I don't > | see a problem there. Mail-Copies-To has value and even interoperates > | fairly well. If Lines: has value, I won't continue argue it should be > | removed, but I haven't understood where that value is. > > The purpose of Lines is quite simple: it gives a ballpark estimate as to > the size of a message, thus allowing the client the ability not to download > messages that exceed a particular size. But it can't be used reliably since very few MUAs generate it. > For example, POP does not have a mechanism by which it can determine the > size of messages. POP3 has. > But it can get all the headers. A POP client can grab the headers > of all messages, check the Lines headers for each, and skip any > messages that exceed a user-defined threshold. This is useful, for > example, if you happen to be a travelling sales engineer currently > somewhere in India using a cellular/gsm phone at 9600 baud to > download your mail but don't want the 150MB PowerPoint presentations > that your manager sent out to everyone, at least not until you get > back to your office and a T1. I am not making this up. I have an > SE who routinely does this. Is the manager who send 150MB powerpoint presentations using Gnus? I strongly doubt Outlook sends a Lines: header in mail. > On the Usenet side of things, Gnus Agent uses Lines headers the same way, > to determine if a message qualifies as "long" and does not automatically > retrieve articles that exceed the "long" threshold. No, the agent is using NOV information.