check

# File actionwebservice/setup.rb, line 129
  def check(val)
    return 'yes' unless val
    unless /\A(y(es)?|n(o)?|t(rue)?|f(alse))\z/i =~ val
      setup_rb_error "config: --#{@name} accepts only yes/no for argument"
    end
    (/\Ay(es)?|\At(rue)/i =~ value) ? 'yes' : 'no'
  end