Re: thread merge/split proposal

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+From: David Bremner <david@tethera.net>\r
+To: Daniel Kahn Gillmor <dkg@fifthhorseman.net>,\r
+ Notmuch Mail <notmuch@notmuchmail.org>\r
+Subject: Re: thread merge/split proposal\r
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+Date: Sun, 07 Aug 2016 08:50:54 +0900\r
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+Daniel Kahn Gillmor <dkg@fifthhorseman.net> writes:\r
+\r
+> That still doesn't cover the "notmuch unjoin" semantics i'd sketched out\r
+> earlier, though.  that might need to be a different use case.\r
+>\r
+> The semantics would be something like:\r
+>\r
+>   break the selected threads into threads based solely on their\r
+>   References headers (including any manual reference terms) using\r
+>   connected component analysis, restoring the threading to what would be\r
+>   produced on a clean import.\r
+\r
+One thing I haven't understood is if the problem this is working around\r
+is unavoidable due to the order messages arrive (or some other factor)\r
+or if this is just a workaround for bugs in the threading algorithm. I'm\r
+guessing the former, but can you explain why the problem is intractable\r
+enough that the right answer is to reindex a thread (btw, that might be\r
+a UI, to use the reindex command introduced in your indexed plaintex\r
+patches).\r
+\r
+d\r