Function accumulate_rect

outdated/sys/mac/mactty.c:612–624

}

static void
accumulate_rect(tty_record *record, Rect *rect)
{
#if CLIP_RECT_ONLY
    union_rect(rect, &(record->invalid_rect), &(record->invalid_rect));
#else
    RgnHandle rh = NewRgn();

    RectRgn(rh, rect);
    UnionRgn(record->invalid_part, rh, record->invalid_part);
    DisposeRgn(rh);
#endif
}

/*
 * get and set window invalid region.  exposed for HandleUpdateEvent in