Rust: Printing a short CLI usage message with clap

Clap can print a short usage message rather than the full help text.

File: Cargo.toml

[package]
edition = "2021"
# --snip--

[dependencies]
clap = { version = "4.4.0", features = ["derive"] }

File: src/main.rs

use clap::CommandFactory;
use clap::Parser;

#[derive(Parser)]
struct Cli {
    /// First arg
    arg1: String,
    /// Second arg
    arg2: Vec<String>,
}

fn main() {
    let mut cmd = Cli::command();
    println!("{}", cmd.render_usage());
}

Result

al@linux ~ $ ./clap_test
Usage: clap_test <ARG1> [ARG2]...