From: Mark Walters <markwalters1009@gmail.com>
To: Gregor Zattler <telegraph@gmx.net>, notmuch <notmuch@notmuchmail.org>
Subject: Re: Bug?: notmuch-search-show-thread shows several threads; only one containing matching messages
Date: Tue, 31 Jan 2012 01:18:55 +0000 [thread overview]
Message-ID: <874nvcekjk.fsf@qmul.ac.uk> (raw)
In-Reply-To: <20120130223416.GA26239@shi.workgroup>
On Mon, 30 Jan 2012 23:34:16 +0100, Gregor Zattler <telegraph@gmx.net> wrote:
> Hi Mark,
> * Mark Walters <markwalters1009@gmail.com> [30. Jan. 2012]:
> > On Mon, 30 Jan 2012 20:04:25 +0100, Gregor Zattler <telegraph@gmx.net> wrote:
> >> * Pieter Praet <pieter@praet.org> [30. Jan. 2012]:
> >>> On Mon, 30 Jan 2012 00:42:14 +0100, Gregor Zattler <telegraph@gmx.net> wrote:
> >>>> * Pieter Praet <pieter@praet.org> [26. Jan. 2012]:
> >>>>> Here's another couple of threads squashed into a single one:
> >>>>> - [O] [Use Question] Capture and long lines
> >>>>> - id:"BANLkTikoF4tXuNLLufRzNSD6k2ZYs7sUcg@mail.gmail.com"
> >>>>> - [O] Worg update
> >>>>> - id:"m1wrfiz3ch.fsf@tsdye.com"
> >>>>> - [O] Table formula to convert hex to dec
> >>>>> - id:"20110724080054.GB16388@x201"
> >>>>> - [O] ICS import?
> >>>>> - id:"20120125173421.GQ3747@x201"
> >>>>>
> >>>>>
> >>>>> AFAICT, none of them share Message-Id's...
> >>>>
> >>>> Do you consider this a bug?
> >>>>
> >>>
> >>> I do. No idea what causes it or how to fix it though... :)
> >>
> >> First I thougt it' not a severe bug since one see's more not less
> >> messages in notmuch show buffer. But later I realised one also
> >> sees less not more threads in notmuch search buffer and might not
> >> read certain notmuch threads because of "wrong" $Subject: in
> >> notmuch search buffer.
>
> > I think notmuch links two messages into the same thread if they have an
> > in-reply-to or reference header in common: i.e the messages reference a
> > common parent message. (See comment in lib/database.cc "Even before a
> > message is added, it's pre-allocated thread ID is useful so that all
> > descendant messages that reference this common parent can be recognized
> > as belonging to the same thread.")
>
> So in case message a from thread A and message b from B would
> name the same Message c in their In-Reoply-To:/References:
> headers, while c is not (for some reason) in A or B, notmuch
> would assume both threads linked? Makes sense.
>
> > As far as I can see your grep tests haven't checked for that.
>
> True.
>
> > Also, could you email me the mbox you had (I think you said that it was
> > a mailing list so all public) and I will take a look?
>
> Sure, I do so off-list because of the size of the attachment.
Hi
I have looked at this and I think this is not notmuch's fault: I think
it is a mua doing strange things:
One of the mails has an in-reply-to header which looks like
In-reply-to: Message from Carsten Dominik <carsten.dominik@gmail.com> of "Tue, 15 Mar 2011 12:18:51 BST." <17242340-A14F-495A-B144-20C96D52B620@gmail.com>
and I think notmuch is taking the carsten.dominik@gmail.com as message
id.
A similar in-reply-to header appears in the other thread so notmuch
pairs them up. According to http://www.jwz.org/doc/threading.html this
form of header is not allowed under RFC2822 but was allowed under the
earlier RFC822.
You can see several such messages on the gnu-mailing list site eg
ftp://lists.gnu.org/emacs-orgmode/2011-11
search for "in-reply-to: M" but they all appear to be from the same
person (running mh-e 8.3 nmh under emacs 24)
In my collection from the linux kernel mailing list I get some examples
of in-reply-to not just being : <msg-id> but it was only about 200 from
100,000 messages in the second half of 2010 (the most recent archives I
have).
Best wishes
Mark
next prev parent reply other threads:[~2012-01-31 1:17 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-26 0:40 [Emacs] Bug?: notmuch-search-show-thread shows several threads; only one containing matching messages Gregor Zattler
2012-01-26 1:19 ` Austin Clements
2012-01-26 2:31 ` Jameson Graef Rollins
2012-01-26 12:44 ` Gregor Zattler
2012-01-26 13:16 ` Jani Nikula
2012-01-29 23:36 ` Gregor Zattler
2012-01-26 13:32 ` Pieter Praet
2012-01-29 23:42 ` Gregor Zattler
2012-01-30 7:06 ` Pieter Praet
2012-01-30 19:04 ` Gregor Zattler
2012-01-30 21:27 ` Mark Walters
2012-01-30 22:34 ` Gregor Zattler
2012-01-31 1:18 ` Mark Walters [this message]
2012-01-31 16:31 ` Jameson Graef Rollins
2014-01-24 13:35 ` David Bremner
2014-01-26 21:26 ` Gregor Zattler
2014-01-26 23:43 ` David Bremner
2014-01-27 1:48 ` Gregor Zattler
2014-02-17 0:16 ` David Bremner
2014-01-27 17:07 ` Eric
2017-07-09 17:10 ` David Bremner
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