Macro fluff_up 

macro_rules! fluff_up {
    ([ $( $line:literal ),+ $(,)?] $( @ $prefix:literal)?) => { ... };
    ($($line:literal ),+ $(,)? ) => { ... };
    ($($line:literal ),+ $(,)? @ $prefix:literal ) => { ... };
}

A helper macro creating valid doc string using the macro syntax /// ....

Example:

let x = fluff_up!(["some", "thing"]);
let y = r#"/// some
/// thing
struct Fluff;"#;

assert_eq!(x,y);