F_READY
old = (dc->flags & F_READY) ? 1 : 0;
dc->flags |= F_READY;
dc->flags &= ~F_READY;
if (wlen > 0 && (dc->flags & F_READY) != 0) {
if ((dc->flags & F_READY) == 0 &&
if ((dc->flags & F_READY) != 0)