argwerk_no_std::define! {
    /// A simple tool.
    #[usage = "tool [-h]"]
    struct Args {
        help: bool,
        limit: usize = 10,
    }
    /// The limit of the operation. (default: 10).
    ["-l" | "--limit", int] => {
        limit = str::parse(&int)?;
    }
    /// Print this help.
    ["-h" | "--help"] => {
        println!("{}", HELP);
        help = true;
    }
}

fn main() -> Result<(), argwerk_no_std::Error> {
  let args = Args::parse(std::env::args().skip(1))?;
  if args.help {
    return Ok(());
  }

  dbg!(args);
  Ok(())
}