    # File bin/el4r-instance, line 448
        def _handle_attrs(attrs, forms, quote)
          docstring = attrs[:docstring]
          forms << el4r_ruby2lisp(docstring) << "\n" if docstring
          interactive = attrs[:interactive]
          if  interactive
            forms << "'" if quote
            case interactive
            when Proc;
              lmd = el4r_ruby2lisp(interactive)
              el4r_lisp_eval %Q((el4r-register-lambda #{lmd}))
              forms << "(interactive (eval (list #{lmd})))"
            when true; forms << "(interactive)\n"
            else; forms << "(interactive #{el4r_ruby2lisp(interactive)})\n"
            end
          end
        end