(gimp-context-get-gradient-repeat-mode) always warns and successfully fails
Apparently GimpPaintOptions does not have a "gradient-repeat" property.
$ gimp-console-2.10 -b '(gimp-context-get-gradient-repeat-mode)'
...
(gimp-console-2.10:13845): GLib-GObject-WARNING **: 10:09:49.435: g_object_get_is_valid_property: object class 'GimpPaintOptions' has no property named 'gradient-repeat'
batch command executed successfully
...
Similar behavior for (gimp-context-set-gradient-repeat-mode ...) whose C version is called by gfig.