Clap example showing multiple options with multiple tokens per opsion

main.rs

use clap::Arg;
use clap::ArgAction;
use clap::Command;

fn main() {
    let cmd = Command::new("hello").arg(
        Arg::new("name")
            .long("name")
            .num_args(1..) // allow multiple tokens
            .action(ArgAction::Append), // when you get multiple tokens, jam them together into a Vec (List to us)
    );
    let names: Vec<String> = cmd
        .get_matches_from(vec!["hello", "--name", "a", "b", "c", "--name", "d"])
        .get_many::<String>("name")
        .unwrap()
        .map(String::from)
        .collect();

    assert_eq!(names, vec!["a", "b", "c", "d"]);
}