Path: csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail
From: Ben Finney <ben+python@benfinney.id.au>
Newsgroups: comp.lang.python
Subject: Re: Threading is foobared?
Date: Sun, 27 Mar 2016 14:18:52 +1100
Lines: 27
Message-ID: <mailman.69.1459048748.28225.python-list@python.org>
References: <56f74d00$0$1620$c3e8da3$5496439d@news.astraweb.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 8bit
X-Trace: news.uni-berlin.de lmKoJIPR7pRLcswkWRzm0gH1lUE4JAEJoLeeNqpVdn3w==
Cancel-Lock: sha1:gYEaHzwYbWToK6yJH3AdP36gcBE=
Return-Path: <python-python-list@m.gmane.org>
X-Original-To: python-list@python.org
Delivered-To: python-list@mail.python.org
X-Spam-Status: OK 0.003
X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; 'broken': 0.03; 'resulting': 0.04; 'hosts': 0.07; 'though:': 0.07; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'ids.': 0.16; 'received:80.91.229.3': 0.16; 'received:io': 0.16; 'received:plane.gmane.org': 0.16; 'received:psf.io': 0.16; 'threading': 0.16; 'threading,': 0.16; 'threads': 0.16; 'constant': 0.22; 'seems': 0.23; 'header:User-Agent:1': 0.26; 'header:X-Complaints-To:1': 0.26; 'least': 0.27; 'host': 0.28; 'values': 0.28; 'posts': 0.30; 'standards': 0.30; "can't": 0.32; 'noticed': 0.32; 'source': 0.33; "d'aprano": 0.33; 'steven': 0.33; 'something': 0.35; 'but': 0.36; 'there': 0.36; 'depends': 0.36; 'to:addr:python-list': 0.36; 'subject:?': 0.36; 'subject:: ': 0.37; 'thanks': 0.37; 'received:org': 0.37; 'to:addr:python.org': 0.40; 'increased': 0.61; 'skip:u 10': 0.61; 'more': 0.63; 'here': 0.66; '_o__)': 0.84; 'extent.': 0.84; 'received:125': 0.84
X-Injected-Via-Gmane: http://gmane.org/
X-Gmane-NNTP-Posting-Host: jigong.madmonks.org
X-Public-Key-ID: 0xAC128405
X-Public-Key-Fingerprint: 517C F14B B2F3 98B0 CB35  4855 B8B2 4C06 AC12 8405
X-Public-Key-URL: http://www.benfinney.id.au/contact/bfinney-pubkey.asc
X-Post-From: Ben Finney <bignose+hates-spam@benfinney.id.au>
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4 (gnu/linux)
X-BeenThere: python-list@python.org
X-Mailman-Version: 2.1.21
Precedence: list
List-Id: General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe: <https://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive: <http://mail.python.org/pipermail/python-list/>
List-Post: <mailto:python-list@python.org>
List-Help: <mailto:python-list-request@python.org?subject=help>
List-Subscribe: <https://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Xref: csiph.com comp.lang.python:105805

Steven D'Aprano <steve@pearwood.info> writes:

> Am I the only one who has noticed that threading of posts here is
> severely broken? It's always been the case that there have been a few
> posts here and there that break threading, but now it seems to be much
> more common.

I can't give an objective assessment of whether it has increased or to
what extent.

Thanks for pointing out an objective symptom, though: munging of the
message ID values in various fields.

The resulting broken threads are a constant source of annoyance. I don't
know whether any one host is the culprit, or whether there are many
hosts that are munging the message IDs.

What you've demonstrated is that at least one host is violating
communication standards by altering existing reference fields on
messages in transit.

-- 
 \      “It is difficult to get a man to understand something when his |
  `\   salary depends upon his not understanding it.” —Upton Sinclair, |
_o__)                                                             1935 |
Ben Finney