# File lib/rake/application.rb, line 549
549:     def find_rakefile_location
550:       here = Dir.pwd
551:       while ! (fn = have_rakefile)
552:         Dir.chdir("..")
553:         if Dir.pwd == here || options.nosearch
554:           return nil
555:         end
556:         here = Dir.pwd
557:       end
558:       [fn, here]
559:     ensure
560:       Dir.chdir(Rake.original_dir)
561:     end