gistfile1.rb

def ask message, answer = /.*/, add_options_string = answer == /.*/ ? false : true
  message = message + ' (' + answer.source + ')' if add_options_string
  begin
    print message
    input = STDIN.gets.chomp
  end while input !~ /^#{answer}$/
  input
end


def ask_with_default default, *params
  input = ask(params)
  return input unless input.gsub(' ', '').empty?
  default
end


ask 'Press enter to continue.'
ask 'Is this awesome?', /yes|no/
ask 'Is this awesome? (yes or no)', /yes|no/, false

ask_with_default '/default/path/', 'Installation path? (/default/path/)'