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From: Justus Winter <4winter@informatik.uni-hamburg.de>
To: notmuch@notmuchmail.org
Subject: fix notmuch_database_close
Date: Wed, 29 Feb 2012 10:19:16 +0100
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Pazz mentioned a problem wrt reopening a notmuch database immediately
after it has been closed. The problem can be reproduced with this test
case:

~~~ snip ~~~
import os
import notmuch

db_path = os.path.expanduser('~/Maildir')

for i in range(2):
    with notmuch.Database(db_path, mode=notmuch.Database.MODE.READ_WRITE) as db:
        query = db.create_query('tag:inbox AND NOT tag:killed')
        print(len(list(query.search_messages())))
~~~ snap ~~~

Without this fix, the second loop iteration fails because the xapian
lock is not released in time.

Cheers,
Justus