anchor.diff:    (when read
       (read-from-string (form-string syntax form))))
   
  -(defmethod form-to-object ((syntax lisp-syntax) (form literal-object-lexeme) &key &allow-other-keys)
  +(defmethod form-to-object ((syntax lisp-syntax) (form literal-object-form) &key &allow-other-keys)
     (object-after (start-mark form)))
   
   (defmethod form-to-object ((syntax lisp-syntax) (form pathname-form) &key &allow-other-keys)
  
positive.code: (defclass bit-vector-form (form-lexeme complete-form-mixin) ())
  (defclass number-lexeme (form-lexeme complete-form-mixin) ())
  (defclass token-mixin () ())
  (defclass literal-object-lexeme (form-lexeme) ())
  (defclass complete-token-lexeme (token-mixin form-lexeme complete-form-mixin) ())
  (defclass multiple-escape-start-lexeme (lisp-lexeme) ())
  (defclass multiple-escape-end-lexeme (lisp-lexeme) ())
  
negative.code: 	(t (cond ((or (constituentp object)
                        (eql object #\\))
                    (lex-token syntax scan))
                   (t (fo) (make-instance 'literal-object-form))))))))
  
  (defmethod lex ((syntax lisp-syntax) (state lexer-list-state) scan)
    (macrolet ((fo () `(forward-object scan)))
  