# File lib/rake/application.rb, line 514
514:     def handle_options
515:       options.rakelib = ['rakelib']
516:       options.trace_output = $stderr
517: 
518:       OptionParser.new do |opts|
519:         opts.banner = "rake [-f rakefile] {options} targets..."
520:         opts.separator ""
521:         opts.separator "Options are ..."
522: 
523:         opts.on_tail("-h", "--help", "-H", "Display this help message.") do
524:           puts opts
525:           exit
526:         end
527: 
528:         standard_rake_options.each { |args| opts.on(*args) }
529:         opts.environment('RAKEOPT')
530:       end.parse!
531:     end