22         let mut read = fmt.as_str();  in expand_shorthand()  localVariable
35         while let Some(brace) = read.find('{') {  in expand_shorthand()
36             out += &read[..brace + 1];  in expand_shorthand()
37             read = &read[brace + 1..];  in expand_shorthand()
38             if read.starts_with('{') {  in expand_shorthand()
40                 read = &read[1..];  in expand_shorthand()
43             let next = match read.chars().next() {  in expand_shorthand()
49                     let int = take_int(&mut read);  in expand_shorthand()
61                     let mut ident = take_ident(&mut read);  in expand_shorthand()
68                 let end_spec = match read.find('}') {  in expand_shorthand()
72                 let bound = match read[..end_spec].chars().next_back() {  in expand_shorthand()
107             if read.starts_with('}') && member_index.contains_key(&member) {  in expand_shorthand()
114         out += read;  in expand_shorthand()
139 fn take_int(read: &mut &str) -> String {  in take_int()
141     for (i, ch) in read.char_indices() {  in take_int()
145                 *read = &read[i..];  in take_int()
153 fn take_ident(read: &mut &str) -> Ident {  in take_ident()
155     let raw = read.starts_with("r#");  in take_ident()
158         *read = &read[2..];  in take_ident()
160     for (i, ch) in read.char_indices() {  in take_ident()
164                 *read = &read[i..];  in take_ident()