fn freplace(input: String, args: &[&str]) -> String {

    let mut parts = input.split("{}");

    let mut output = parts.next().unwrap_or("").to_string();

    for (p, a) in parts.zip(args.iter()) {

        output += &(a.to_string() + p);

    output

pub(crate) fn i18n_f(format: &str, args: &[&str]) -> String {

    let s = gettext(format);

    freplace(s, args)