Macro define

macro_rules! define {
    ( $vis:vis const $name:ident: &[u8; $n:expr] = include $path:literal ) => { ... };
    ( $vis:vis const $name:ident: &[u8 align $unit:ty; $n:expr] = include $path:literal ) => { ... };
    ( $vis:vis const searchable $name:ident: &[$unit:ty; $n:expr] = $v:expr ) => { ... };
    ( $vis:vis const $name:ident: &[$unit:ty; $n:expr] = $v:expr ) => { ... };
}