# File lib/action_dispatch/http/upload.rb, line 18
      def original_filename
        unless defined? @original_filename
          @original_filename =
            unless original_path.blank?
              if original_path =~ /^(?:.*[:\\\/])?(.*)/m
                $1
              else
                File.basename original_path
              end
            end
        end
        @original_filename
      end