Function main

examples/final.rs:127–136

()

}

fn main() {
    loop {
        show_prompt();
        let line = read_line();
        let chains = chains_from_line(&line);
        for chain in chains {
            chain.run();
        }
    }
}

/// If stdout is printed to a terminal, print a prompt.
/// Otherwise, do nothing. This allows to redirect the shell stdout