Function notmuch_sys::notmuch_tags_valid

pub unsafe extern "C" fn notmuch_tags_valid(
    tags: *mut notmuch_tags_t
) -> notmuch_bool_t

Is the given 'tags' iterator pointing at a valid tag.

When this function returns TRUE, notmuch_tags_get will return a valid string. Whereas when this function returns FALSE, notmuch_tags_get will return NULL.

See the documentation of notmuch_message_get_tags for example code showing how to iterate over a notmuch_tags_t object.