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//! Example Help
//!
//! > This example demonstrates how to use the `#[help]` macro to generate help information,
//! > enabling `--help` to work
//!
//! Run
//! ```bash
//! cargo run --manifest-path examples/example-help/Cargo.toml --quiet -- greet --help
//! ```
//!
//! Output:
//! ```plain
//! Usage: greet <NAME>
//! ```
use mingling::{macros::help, prelude::*, setup::BasicProgramSetup};
dispatcher!("greet", CMDGreet => EntryGreet);
// Define help _________ When `program.user_context.help` is `true`
// / the command will not enter `#[chain]` / `#[renderer]`
#[help] // vvvvvvvvvv but instead enter this `#[help]` function
fn help_greet(_prev: EntryGreet) {
r_println!("Usage: greet <NAME>");
}
fn main() {
let mut program = ThisProgram::new();
// --------- IMPORTANT ---------
// Add `BasicProgramSetup` to the program
// to enable `--help`, `--quiet`, and other built-in features
program.with_setup(BasicProgramSetup);
// --------- IMPORTANT ---------
program.with_dispatcher(CMDGreet);
program.exec_and_exit();
}
gen_program!();
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