IODUP
case IODUP:
iotype == IODUP ? "dup" :
if (iotype != IODUP)
if (iotype != IODUP)
iop->flag = IODUP | (c == '<' ? IORDUP : 0);
(type == IODUP && (iop->unit == !(flag & IORDUP))) ? iop->unit :
case IODUP: