The PATCH and API keywords are no longer in use. Pointed out in 588229.
Otherwise, enter a new bug report that describes the patch, and attach
the patch to that bug report.
-Bug reports containing patches should include the PATCH keyword in their
-keyword fields. If the patch adds to or changes the GTK+ programming
-interface, the API keyword should also be included.
-
-Patches should be in unified diff form. (The -u option to GNU diff.)
+Patches should be in unified diff form. (The -up option to GNU diff.)