if *n <= 1 {

                if *n == 0 || *n == 1 {
                    let filler = if *i == *n { "=" } else { " " };

                        if *i == 1 {
                            write!(stdout, "=")?;
                        } else {
                            write!(stdout, " ")?
                        }

                        stdout.write_all(filler.as_bytes())?;