From: David Bremner <david@tethera.net>
Date: Sun, 28 Jan 2018 02:50:42 +0000 (-0400)
Subject: lib: define specialized get_thread_id for use in thread subquery
X-Git-Tag: 0.27_rc0~31
X-Git-Url: https://git.notmuchmail.org/git?p=notmuch;a=commitdiff_plain;h=f0131af6c59704e29d58eb74ed5e4bc298455272;hp=f0131af6c59704e29d58eb74ed5e4bc298455272

lib: define specialized get_thread_id for use in thread subquery

The observation is that we are only using the messages to get there
thread_id, which is kindof a pessimal access pattern for the current
notmuch_message_get_thread_id
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