Re: Why do the URLs of posts here change?

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From	Peter Otten <__peter__@web.de>
Subject	Re: Why do the URLs of posts here change?
Date	Fri, 09 Jan 2015 13:04:50 +0100
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Steven D'Aprano wrote:

> I have come across this in the past, but today it annoyed me enough that
> I'm asking for an explanation.
> 
> Posts on this newsgroup/mailing list are archived on the web, but the URLs
> seem to change, which leaves dead links if you search for things.
> 
> For example, today I searched for a quote about floating point equality by
> William Kahan, and I came across this post by me:
> 
> https://mail.python.org/pipermail/python-list/2008-February/468598.html
> 
> But that's a dead link! Here's Google's cache of it:
> 
> 
http://webcache.googleusercontent.com/search?client=opera&rls=en&q=cache:i0cWb0Tjxe0J:https://mail.python.org/pipermail/python-list/2008-February/468598.html%2Bfloating+point+superstition+equality&oe=utf-8&channel=suggest&gws_rd=ssl&hl=en&&ct=clnk
> 
> And here is the actual URL, as it appears today:
> 
> https://mail.python.org/pipermail/python-list/2008-February/481374.html
> 
> 
> Why has the URL changed? Surely this is a bug? Where can I report it?

This is a flaw of the mailman software.

http://wiki.list.org/display/DEV/Stable+URLs

suggests that the developers are aware of it. 

I don't know if there is a version available that has stable urls...

Thread

Why do the URLs of posts here change? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-01-09 21:56 +1100
  Re: Why do the URLs of posts here change? Skip Montanaro <skip.montanaro@gmail.com> - 2015-01-09 06:04 -0600
    Re: Why do the URLs of posts here change? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-01-09 23:28 +1100
    Re: Why do the URLs of posts here change? Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2015-01-10 16:21 +1300
      Re: Why do the URLs of posts here change? Chris Angelico <rosuav@gmail.com> - 2015-01-10 14:53 +1100
        Re: Why do the URLs of posts here change? albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-01-17 16:39 +0000
          Re: Why do the URLs of posts here change? Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2015-01-18 11:31 +1300
  Re: Why do the URLs of posts here change? Peter Otten <__peter__@web.de> - 2015-01-09 13:04 +0100
  Re: Why do the URLs of posts here change? Rustom Mody <rustompmody@gmail.com> - 2015-01-09 06:09 -0800
    Re: Why do the URLs of posts here change? Skip Montanaro <skip.montanaro@gmail.com> - 2015-01-09 08:15 -0600
      Re: Why do the URLs of posts here change? Rustom Mody <rustompmody@gmail.com> - 2015-01-09 08:52 -0800
        Re: Why do the URLs of posts here change? Chris Angelico <rosuav@gmail.com> - 2015-01-10 03:57 +1100
          Re: Why do the URLs of posts here change? Rustom Mody <rustompmody@gmail.com> - 2015-01-09 09:19 -0800
  Re: Why do the URLs of posts here change? Terry Reedy <tjreedy@udel.edu> - 2015-01-10 04:41 -0500
  Re: Why do the URLs of posts here change? Skip Montanaro <skip.montanaro@gmail.com> - 2015-01-10 07:57 -0600

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