{"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"skip_char_and_emit(&mut"}]}
                        skip_char_and_emit(&mut chars, FormatSpecifier::Fill, &mut callback);
                        // alignment specifier, first char specifies fill
                        skip_char_and_emit(&mut chars, FormatSpecifier::Align, &mut callback);