bpaf 0.4.3

A simple Command Line Argument Parser with parser combinators
Documentation 
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//! How to extract subcommands' args into external structs.

use bpaf::*;

#[derive(Debug, Clone)]
pub struct Foo {
    pub bar: Option<String>,
}

#[derive(Debug, Clone)]
pub enum Command {
    Foo(Foo),
}

fn main() {
    let bar = short('b')
        .long("bar")
        .help("some bar command")
        .argument("BAR")
        .optional();

    let bar_cmd = Info::default()
        .descr("This command will try to do foo given a bar argument")
        .for_parser(construct!(Foo { bar }));

    let command = command("foo", Some("command for doing foo"), bar_cmd).map(Command::Foo);

    let opt = Info::default().for_parser(command).run();
    println!("{:#?}", opt);
}