201                 Input::Keyword(expected) => input.step(|cursor| match cursor.ident() {  in scan_expr()
203                     _ => Ok((false, *cursor)),  in scan_expr()
205                 Input::Punct(expected) => input.step(|cursor| {  in scan_expr()
206                     let begin = *cursor;  in scan_expr()
207                     let mut cursor = begin;  in scan_expr()  localVariable
209                         match cursor.punct() {  in scan_expr()
215                                 cursor = rest;  in scan_expr()
226                         && input.step(|cursor| match cursor.group(Delimiter::Brace) {  in scan_expr()
228                             None => Ok((false, *cursor)),  in scan_expr()
231                 Input::ConsumeDelimiter => input.step(|cursor| match cursor.any_group() {  in scan_expr()
233                     None => Ok((false, *cursor)),  in scan_expr()