# File lib/rake/file_utils_ext.rb, line 54
    def verbose(value=nil)
      oldvalue = FileUtilsExt.verbose_flag
      FileUtilsExt.verbose_flag = value unless value.nil?
      if block_given?
        begin
          yield
        ensure
          FileUtilsExt.verbose_flag = oldvalue
        end
      end
      FileUtilsExt.verbose_flag
    end