handle_options

# File lib/rake/application.rb, line 570
    def handle_options
      options.rakelib = ['rakelib']
      options.trace_output = $stderr

      OptionParser.new do |opts|
        opts.banner = "#{Rake.application.name} [-f rakefile] {options} targets..."
        opts.separator ""
        opts.separator "Options are ..."

        opts.on_tail("-h", "--help", "-H", "Display this help message.") do
          puts opts
          exit
        end

        standard_rake_options.each { |args| opts.on(*args) }
        opts.environment('RAKEOPT')
      end.parse!
    end