require 'main'

puts Main.version

Main {
  argument 'x' do
    error :before do
      puts 'this fires *before* normal error handling using #instance_eval...'
    end

    error do
      puts 'this fires *instead of* normal error handling using #instance_eval...'
    end

    error :after do
      puts 'this fires *after* normal error handling using #instance_eval...'
    end
  end
  
  run(){ p param['x'].given? }
}