Fix notmuch_message_get_message_id to never return NULL.

[notmuch] / notmuch.h

diff --git a/notmuch.h b/notmuch.h
index bc2caaad5c800fdca224a8288d50ff2f1dbb7ad5..f568bc0a2da3458fad66b6b13f03d7fadb267f24 100644 (file)
--- a/notmuch.h
+++ b/notmuch.h
@@ -338,10 +338,21 @@ notmuch_results_destroy (notmuch_results_t *results);
  * modified by the caller and will only be valid for as long as the
  * message is valid, (which is until the query from which it derived
  * is destroyed).
+ *
+ * This function will not return NULL since Notmuch ensures that every
+ * message has a unique message ID, (Notmuch will generate an ID for a
+ * message if the original file does not contain one).
  */
 const char *
 notmuch_message_get_message_id (notmuch_message_t *message);
 
+/* Get this filename for the email corresponding to 'message'.
+ *
+ * The returned filename is relative to the base of the database from
+ * which 'message' was obtained. See notmuch_database_get_path() .*/
+const char *
+notmuch_message_get_filename (notmuch_message_t *message);
+
 /* Get the tags for 'message', returning a notmuch_tags_t object which
  * can be used to iterate over all tags.
  *