# File lib/rake/application.rb, line 466
466:     def find_rakefile_location
467:       here = Dir.pwd
468:       while ! (fn = have_rakefile)
469:         Dir.chdir("..")
470:         if Dir.pwd == here || options.nosearch
471:           return nil
472:         end
473:         here = Dir.pwd
474:       end
475:       [fn, here]
476:     ensure
477:       Dir.chdir(Rake.original_dir)
478:     end