Thanks for the quick response David.
xapian-check reports no problems.
Looking at individual message-ids using notmuch show does not show
anything different. (In this case, the thread had just one
notmuch-dump seems to be working as expected, so I will try
rebuilding my database from the dump in a few days, and report on
whether that fixed the problem.
In the meantime, would anyone be interested in investigating this
inconsistency so see if this is a notmuch bug that needs fixing?
I'd be happy to run any commands and post the output.
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