pub fn get_shell_completion_dir() -> Result<Option<PathBuf>, DeployError>
Examples found in repository?
src/commands.rs (line 182)
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fn generate_completions<C, S>() -> Result<(), DeployError>
where
    C: Contract,
    S: Subcommand,
{
    let shell_completion_dir = match get_shell_completion_dir()? {
        Some(shell_completion_dir) => shell_completion_dir,
        None => return Ok(()),
    };
    let string = env::var_os("SHELL").unwrap().into_string().unwrap();
    let (_, last_word) = string.rsplit_once('/').unwrap();
    let mut cmd = Cli::<C, S>::command();

    match last_word {
        "zsh" => {
            println!("Generating shell completion scripts for zsh");
            println!("Run source ~/.zshrc to update your completion scripts");

            let generated_file = generate_to(
                Zsh,
                &mut cmd,            // We need to specify what generator to use
                "deploy",            // We need to specify the bin name manually
                BUILD_DIR.as_path(), // We need to specify where to write to
            )?;

            let source_path = BUILD_DIR.join(generated_file.file_name().unwrap());
            let target_path = shell_completion_dir.join(generated_file.file_name().unwrap());
            Command::new("rm").arg(target_path.clone()).spawn()?.wait().ok();

            if Command::new("cp").arg(source_path).arg(target_path).spawn()?.wait()?.exit_ok().is_err() {
                println!("could not find {}", shell_completion_dir.to_str().unwrap());
            }
        }
        "bash" => {
            println!("generating shell completion scripts for bash");
            let generated_file = generate_to(
                Bash,
                &mut cmd,            // We need to specify what generator to use
                "deploy",            // We need to specify the bin name manually
                BUILD_DIR.as_path(), // We need to specify where to write to
            )?;

            let source_path = BUILD_DIR.join(generated_file.file_name().unwrap());
            let target_path = shell_completion_dir.join(generated_file.file_name().unwrap());

            if Command::new("cp").arg(source_path).arg(target_path).spawn()?.wait()?.exit_ok().is_err() {
                println!("could not find {}", shell_completion_dir.to_str().unwrap());
            }
        }
        _ => {
            return Err(DeployError::UnsupportedShell {});
        }
    }

    Ok(())
}