51         if let TokenTree::Group(group) = token {  in expand()
52             let delimiter = group.delimiter();  in expand()
53             let span = group.span();  in expand()
54             let mut stream: Vec<_> = group.stream().into_iter().collect();  in expand()
66                 let mut group = Group::new(delimiter, stream.into_iter().collect());  in expand()  localVariable
67                 group.set_span(span);  in expand()
68                 *token = TokenTree::Group(group);  in expand()
82                 TokenTree::Group(group) if group.delimiter() == Delimiter::None => {  in expand()
83                     tokens.splice(i + 3..i + 4, group.stream());  in expand()
89                 TokenTree::Group(group) if group.delimiter() == Delimiter::None => {  in expand()
90                     tokens.splice(i..i + 1, group.stream());  in expand()