254             Some(TokenTree::Punct(punct)) => {  in expand()
255                 lookbehind = match punct.as_char() {  in expand()
257                     ':' if punct.spacing() == Spacing::Joint => Lookbehind::JointColon,  in expand()
262                 expanded.extend(iter::once(TokenTree::Punct(punct)));  in expand()
300             (State::Init, TokenTree::Punct(punct)) if punct.as_char() == '\'' => State::Apostrophe,  in is_single_interpolation_group()
302             (State::Ident, TokenTree::Punct(punct))  in is_single_interpolation_group()
303                 if punct.as_char() == ':' && punct.spacing() == Spacing::Joint =>  in is_single_interpolation_group()
307             (State::Colon1, TokenTree::Punct(punct))  in is_single_interpolation_group()
308                 if punct.as_char() == ':' && punct.spacing() == Spacing::Alone =>  in is_single_interpolation_group()
324         Some(TokenTree::Punct(punct)) if punct.as_char() == '<' => {}  in is_paste_operation()
331             Some(TokenTree::Punct(punct)) if punct.as_char() == '>' => {  in is_paste_operation()
344         Some(TokenTree::Punct(punct)) if punct.as_char() == '<' => {}  in parse_bracket_as_segments()
352         Some(TokenTree::Punct(punct)) if punct.as_char() == '>' => {}  in parse_bracket_as_segments()