# File lib/rake.rb, line 677
677:   def nowrite(value=nil)
678:     oldvalue = $fileutils_nowrite
679:     $fileutils_nowrite = value unless value.nil?
680:     if block_given?
681:       begin
682:         yield
683:       ensure
684:         $fileutils_nowrite = oldvalue
685:       end
686:     end
687:     oldvalue
688:   end