lib: add regression test for n_m_get_date; clarify API

[notmuch] / lib / notmuch.h

diff --git a/lib/notmuch.h b/lib/notmuch.h
index e544aafd60b6b28e6dacee5671b3a87c7d31f830..50d804fa99f935fcbf00d5454b3639675aa687ef 100644 (file)
--- a/lib/notmuch.h
+++ b/lib/notmuch.h
@@ -1503,6 +1503,8 @@ notmuch_message_set_flag (notmuch_message_t *message,
  * For the original textual representation of the Date header from the
  * message call notmuch_message_get_header() with a header value of
  * "date".
+ *
+ * Returns 0 in case of error.
  */
 time_t
 notmuch_message_get_date (notmuch_message_t *message);