{"ast_node_type":"other","tokens":[{"end":87,"kind":"keyword","start":0,"text":"buffer.puts(*row_num,"}]}
                    buffer.puts(*row_num, max_line_num_len + 1, "+ ", Style::Addition);
                [SubstitutionHighlight { start: 0, end }] if *end == line_to_add.len() => {
                }