lib: handle xapian exception in n_m_remove_all_tags

At least the exception we already catch should be reported properly.

2 files changed, 11 insertions, 5 deletions

diff --git a/lib/message.cc b/lib/message.cc
index 8e090aa3..09708ed9 100644
--- a/lib/message.cc
+++ b/lib/message.cc
@@ -2071,16 +2071,20 @@ notmuch_message_remove_all_tags (notmuch_message_t *message)
     status = _notmuch_database_ensure_writable (message->notmuch);
     if (status)
 	return status;
+    tags = notmuch_message_get_tags (message);
+    if (! tags)
+	return NOTMUCH_STATUS_XAPIAN_EXCEPTION;
 
-    for (tags = notmuch_message_get_tags (message);
+    for (;
 	 notmuch_tags_valid (tags);
 	 notmuch_tags_move_to_next (tags)) {
 	tag = notmuch_tags_get (tags);
 
 	private_status = _notmuch_message_remove_term (message, "tag", tag);
 	if (private_status) {
-	    INTERNAL_ERROR ("_notmuch_message_remove_term return unexpected value: %d\n",
-			    private_status);
+	    return COERCE_STATUS (private_status,
+				   "_notmuch_message_remove_term return unexpected value: %d\n",
+				   private_status);
 	}
     }
 
diff --git a/lib/notmuch.h b/lib/notmuch.h
index edad3d8a..82d6c10f 100644
--- a/lib/notmuch.h
+++ b/lib/notmuch.h
@@ -1635,8 +1635,10 @@ notmuch_message_remove_tag (notmuch_message_t *message, const char *tag);
  * See notmuch_message_freeze for an example showing how to safely
  * replace tag values.
  *
- * NOTMUCH_STATUS_READ_ONLY_DATABASE: Database was opened in read-only
- *	mode so message cannot be modified.
+ * @retval #NOTMUCH_STATUS_READ_ONLY_DATABASE: Database was opened in
+ *	read-only mode so message cannot be modified.
+ * @retval #NOTMUCH_STATUS_XAPIAN_EXCEPTION: an execption was thrown
+ *      accessing the database.
  */
 notmuch_status_t
 notmuch_message_remove_all_tags (notmuch_message_t *message);