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. Ciao, Gregor -- -... --- .-. . -.. ..--.. ...-.-