# File lib/rake/application.rb, line 643
643:     def load_imports
644:       while fn = @pending_imports.shift
645:         next if @imported.member?(fn)
646:         if fn_task = lookup(fn)
647:           fn_task.invoke
648:         end
649:         ext = File.extname(fn)
650:         loader = @loaders[ext] || @default_loader
651:         loader.load(fn)
652:         @imported << fn
653:       end
654:     end