Constant HELP_TEMPLATE 

pub const HELP_TEMPLATE: &str = r"{about-section}
{usage-heading} {usage}

{all-args}{tab}

{name}: {version}
Author: {author-with-newline}
";

Custom help template for displaying command-line usage information

This template modifies the default template provided by Clap to include additional information and customize the layout of the help message.

Differences from the default template:

• Includes the application version and author information at the end

Apply like this:

use clap::Parser;
#[derive(Parser, Debug, Clone, PartialEq, Eq, Hash)]
#[command(help_template = HELP_TEMPLATE, author, version)]
pub struct MyArgs {
    /// show more details
    #[arg(short, long)]
    pub verbose: bool,
}

Example

Don’t forget to set authors in your Cargo.toml!

$ cargo run -- -h
about: short

Usage: aaa [OPTIONS]

Options:
  -v, --verbose  show more details
  -h, --help     Print help (see more with '--help')
  -V, --version  Print version

aaa: 0.1.0
Author: Christoph J. Scherr <software@cscherr.de>