    # File bin/el4r-instance, line 565
        def el4r_ruby2lisp(obj)
          case obj
          when nil, false; "nil"
          when true; "t"
          when String; El4r.lisp_dump_string(obj)
          when Regexp; El4r.lisp_dump_string(el4r_conv_regexp(obj))
          when Symbol; "'#{El4r.name_rb2el(obj.to_s)}"
          when Proc; el4r_rubyproc_to_lambda(&obj)
          when Integer
            (ELISP_INTEGER_RANGE === obj) or
              raise(RangeError,
                    "Integer #{obj} exceed elisp limitation (#{ELISP_INTEGER_RANGE})")
            obj.to_s
          when Numeric; obj.to_s
          when Array; "(list #{el4r_args_to_lispseq(*obj)})"
          when ELObject; obj.to_lisp
          when ELExpression; obj.expression
          else; el4r_rubyobj_stock.obj2lisp(obj)
          end
        end