- struct face *face = FACE_FROM_ID (f, WINDOW_DIVIDER_FACE_ID);
- struct face *face_first = FACE_FROM_ID (f, WINDOW_DIVIDER_FIRST_PIXEL_FACE_ID);
- struct face *face_last = FACE_FROM_ID (f, WINDOW_DIVIDER_LAST_PIXEL_FACE_ID);
+ struct face *face = FACE_OPT_FROM_ID (f, WINDOW_DIVIDER_FACE_ID);
+ struct face *face_first
+ = FACE_OPT_FROM_ID (f, WINDOW_DIVIDER_FIRST_PIXEL_FACE_ID);
+ struct face *face_last
+ = FACE_OPT_FROM_ID (f, WINDOW_DIVIDER_LAST_PIXEL_FACE_ID);