# 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