Notmuch boolean type.
A callback invoked by notmuch_database_compact to notify the user of the progress of the compaction process.
Database open mode for notmuch_database_open.
Exclude values for notmuch_query_set_omit_excluded. The strange order is to maintain backward compatibility: the old FALSE/TRUE options correspond to the new NOTMUCH_EXCLUDE_FLAG/NOTMUCH_EXCLUDE_TRUE options.
Message flags.
Sort values for notmuch_query_set_sort.
Status codes used for the return values of most functions.
The longest possible tag value.
Status codes used for the return values of most functions.
Opaque message property iterator