SSTDIN
if (s->type == SSTDIN)
if (type == SFILE || type == SSTDIN) {
case SSTDIN:
int interactive = Flag(FTALKING) && s->type == SSTDIN;
s = pushs(SSTDIN, ATEMP);
s->type = SSTDIN;
s->type = SSTDIN;
s->type = SSTDIN;