1 //! How to append a postscript to the help message generated. 2 3 use structopt::StructOpt; 4 5 /// I am a program and I do things. 6 /// 7 /// Sometimes they even work. 8 #[derive(StructOpt, Debug)] 9 #[structopt(after_help = "Beware `-d`, dragons be here")] 10 struct Opt { 11 /// Release the dragon. 12 #[structopt(short)] 13 dragon: bool, 14 } 15 main()16fn main() { 17 let opt = Opt::from_args(); 18 println!("{:?}", opt); 19 } 20