fn main() {
let app = clap::App::new("cargo")
.bin_name("cargo")
.setting(clap::AppSettings::SubcommandRequired)
.subcommand(
clap::app_from_crate!().name("example").arg(
clap::arg!(--"manifest-path" <PATH>)
.required(false)
.allow_invalid_utf8(true),
),
);
let matches = app.get_matches();
let matches = match matches.subcommand() {
Some(("example", matches)) => matches,
_ => unreachable!("clap should ensure we don't get here"),
};
let manifest_path = matches
.value_of_os("manifest-path")
.map(std::path::PathBuf::from);
println!("{:?}", manifest_path);
}