402     None,  enumerator
409         Unexpected::None  in default()
416             Unexpected::None => Unexpected::None,  in clone()
436             Unexpected::None => return (unexpected, None),  in inner_unexpected()
449         return None;  in span_of_unexpected_ignoring_nones()
451     while let Some((inner, _span, rest)) = cursor.group(Delimiter::None) {  in span_of_unexpected_ignoring_nones()
458         None  in span_of_unexpected_ignoring_nones()
975             unexpected: Cell::new(Some(Rc::new(Cell::new(Unexpected::None)))),  in fork()
1162             None => Ok(()),  in check_unexpected()
1180             Ok(None)  in parse()
1197             None => Err(cursor.error("expected token tree")),  in parse()
1207                 if group.delimiter() != Delimiter::None {  in parse()
1221             None => Err(cursor.error("expected punctuation token")),  in parse()
1231             None => Err(cursor.error("expected literal token")),  in parse()
1284     let unexpected = Rc::new(Cell::new(Unexpected::None));  in tokens_to_parse_buffer()
1311         let unexpected = Rc::new(Cell::new(Unexpected::None));  in __parse_scoped()
1334         Delimiter::None => "unexpected token",  in err_unexpected_token()