[PATCH v4 7/7] complete ghost-on-removal-when-shared-thread-exists

[David Bremner]

Daniel Kahn Gillmor <dkg at fifthhorseman.net> writes:

> To fully complete the ghost-on-removal-when-shared-thread-exists
> proposal, we need to clear all ghost messages when the last active
> message is removed from a thread.

For me this patch breaks T530 as follows

T530-upgrade: Testing database upgrade
 FAIL   ghost message retains thread ID
	--- T530-upgrade.13.expected	2016-04-11 00:25:19.482196274 +0000
	+++ T530-upgrade.13.output	2016-04-11 00:25:19.482196274 +0000
	@@ -1 +1 @@
	-thread:000000000000001d
	+thread:0000000000000011
No new mail.
No new mail. Removed 1 message.

I pushed my rebased version of the patches to

  https://git.notmuchmail.org/git?p=notmuch;a=shortlog;h=refs/heads/thread-fix

in case the problem is some mistake on my part.

d