Is it possible to implement notmuch_threads_back and notmuch_messages_back? And I guess will make sense to have also notmuch_tags_back. This functions will do the oposite than notmuch_threads_advance and notmuch_messages_advance. So I can use them as iterators going back and forward. I didn't check the implementation of notmuch. I don't know if will be easy or will need to redesign a lot of code. -- Rubén Pollán | jabber:meskio@jabber.org -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- La felicidad no es hacer lo que deseas es desear lo que haces.