#[arg(short = 'n', long, alias = "nom", env = "NAME_ENV_VAR")]

    #[arg(
        short = 'n',
        long,
        visible_alias = "nom",
        alias = "hidden-should-not-appear",
        env = "NAME_ENV_VAR"
    )]

fn aliases(arg: &Arg) -> impl ViewSequence<Arg> {
    let mut aliases = Vec::new();
    // Handle short aliases (-a, -b etc)
    if let Some(long_aliases) = arg.get_short_and_visible_aliases() {
        aliases.extend(
            long_aliases
                .iter()
                .map(|alias| alias.to_string())
                .filter(|alias| alias != arg.get_id()),
        );
    }

fn env(arg: &Arg) -> impl ViewSequence<Arg> {
    arg.get_env()
        .map(|variable| variable.to_string_lossy().to_string())
        .map(el::span)
}

    // Handle long aliases (--alias1, --alias2 etc)
    if let Some(long_aliases) = arg.get_long_and_visible_aliases() {
        aliases.extend(
            long_aliases
                .iter()
                .map(|alias| alias.to_string())
                .filter(|alias| alias != arg.get_id()),
        );
    }

fn aliases(arg: &Arg) -> impl ViewSequence<Arg> {
    let aliases = if let Some(aliases) = arg.get_all_aliases() {
        aliases
            .iter()
            .map(|alias| alias.to_string())
            .filter(|alias| alias != arg.get_id())
            .collect::<Vec<String>>()
    } else {
        // Ignore if there's no aliases
        return None;
    };

    // Handle environment variables
    if let Some(env_var) = arg.get_env() {
        aliases.push(env_var.to_string_lossy().to_string())
    }

        env(arg),