Return the number of messages matching a search.
This function performs a search and returns the number of matching messages.
@returns
query completed successfully.
a Xapian exception occured. The value of *count is not defined.
@since libnotmuch 4.3 (notmuch 0.21)
See Implementation
Return the number of messages matching a search.
This function performs a search and returns the number of matching messages.
@returns