free (message_id);
-/*
date = notmuch_message_get_header (message, "date");
time_value = notmuch_parse_date (date, NULL);
doc.add_value (NOTMUCH_VALUE_DATE,
Xapian::sortable_serialise (time_value));
-*/
db->add_document (doc);
} catch (const Xapian::Error &error) {