Function bpaf::cargo_helper

pub fn cargo_helper<T>(cmd: &'static str, parser: Parser<T>) -> Parser<T> where
    T: 'static, 

Strip a command name if present at the front when used as a cargo command

This helper should be used on a top level parser

let width = short('w').argument("PX").from_str::<u32>();
let height = short('h').argument("PX").from_str::<u32>();
let parser: Parser<(u32, u32)> = cargo_helper("cmd", construct!(width, height));