// https://github.com/rust-lang/rustfmt/issues/3979

fn main() {
    let o_num = Some(123);

    let x = if let Some(n) =
        // this is a test comment
        // to see if rustfmt will break
        // after using the lateset version
        o_num
    {
        n * 2
    } else {
        0
    };

    println!("Number: {}", x);
}