98     Idle(Option<Buf>),  enumerator
206                 state: State::Idle(Some(Buf::with_capacity(0))),  in from_std()
314             Idle(ref mut buf_cell) => buf_cell.take().unwrap(),  in set_len()
339             Idle(_) => unreachable!(),  in set_len()
343         inner.state = Idle(Some(buf));  in set_len()
493                 Idle(ref mut buf_cell) => {  in poll_read()
516                             inner.state = Idle(Some(buf));  in poll_read()
522                             inner.state = Idle(Some(buf));  in poll_read()
527                             inner.state = Idle(Some(buf));  in poll_read()
533                             inner.state = Idle(Some(buf));  in poll_read()
537                             inner.state = Idle(Some(buf));  in poll_read()
558                 Idle(ref mut buf_cell) => {  in start_seek()
587                 Idle(_) => return Poll::Ready(Ok(inner.pos)),  in poll_complete()
590                     inner.state = Idle(Some(buf));  in poll_complete()
627                 Idle(ref mut buf_cell) => {  in poll_write()
653                     inner.state = Idle(Some(buf));  in poll_write()
745             Idle(_) => return Ready(Ok(())),  in poll_flush()
750         self.state = Idle(Some(buf));  in poll_flush()