{"ast_node_type":"variable","tokens":[{"end":64,"kind":"keyword","start":0,"text":"let"}]}
            let i_highlighted = format!("{i_str}\x1b[0m\x1b[K");
            format_to!(error_msg, "\x1b[46mright change:\x1b[0m {r:?} {r}\n");
            let total_range: Range<usize> = i_range.into();