# File lib/rake/application.rb, line 452
452:     def rake_require(file_name, paths=$LOAD_PATH, loaded=$")
453:       fn = file_name + ".rake"
454:       return false if loaded.include?(fn)
455:       paths.each do |path|
456:         full_path = File.join(path, fn)
457:         if File.exist?(full_path)
458:           Rake.load_rakefile(full_path)
459:           loaded << fn
460:           return true
461:         end
462:       end
463:       fail LoadError, "Can't find #{file_name}"
464:     end