QS_IS_QUEUEUP
!QS_IS_QUEUEUP(e->e_from.q_state))
if (QS_IS_QUEUEUP(q->q_state))
if (QS_IS_QUEUEUP(to->q_state) &&
else if (QS_IS_QUEUEUP(q->q_state))
if (QS_IS_QUEUEUP(q->q_state))
QS_IS_QUEUEUP(a->q_state) ?