TF_ACKNOW
if (tp->t_flags & (TF_ACKNOW|TF_NEEDOUTPUT))
tp->t_flags |= TF_ACKNOW;
tp->t_flags |= TF_ACKNOW;
tp->t_flags |= TF_ACKNOW;
if (tp->t_flags & TF_ACKNOW)
tp->t_flags |= TF_ACKNOW; \
tp->t_flags |= TF_ACKNOW;
tp->t_flags |= TF_ACKNOW;
if (tp->t_flags & (TF_ACKNOW|TF_NEEDOUTPUT))
tp->t_flags |= TF_ACKNOW;
tp->t_flags &= ~TF_ACKNOW;
if (tp->t_flags & TF_ACKNOW)
if (tp->t_flags & TF_ACKNOW)
tp->t_flags |= TF_ACKNOW;