#!/usr/bin/lua

local argparse = require "util.argparse";

local opts = argparse.parse(arg, { -- 'arg' is set by Lua
    -- -h is the same as --help
    short_params = {
        h = "help";
    };
    -- --user requires a parameter
    value_params = {
        user = true;
    };
});

if opts.help then
    print("example.lua [-h|--help] [--user{=}USER]")
    os.exit(0);
end

print("Hello, "..(opts.user or "World!"))