anchor.diff:            (setf (url buffer) (quri:uri url))))
       buffer))
   
  +(define-command make-nosave-buffer (&key (title "") modes (url "") (load-url-p t))
  +  "Create a new buffer that won't save anything to the filesystem.
  +MODES is a list of mode symbols.
  +If URL is `:default', use `default-new-buffer-url'.
  +LOAD-URL-P controls whether to load URL right at buffer creation."
  +  (let* ((buffer (buffer-make *browser* :title title
  +                                        :default-modes modes
  +                                        :nosave-buffer-p t))
  +         (url (if (eq url :default)
  +                  (default-new-buffer-url buffer)
  +                  url)))
  +    (unless (url-empty-p url)
  +      (if load-url-p
  +          (buffer-load url :buffer buffer)
  +          (setf (url buffer) (quri:uri url))))
  +    buffer))
  +
   (define-command make-internal-buffer (&key (title "") modes
                                         no-history-p)
     "Create a new buffer.
  
positive.code: (defmethod initialize-instance :after ((buffer web-buffer) &key)
    (when (expand-path (cookies-path buffer))
      (ensure-parent-exists (expand-path (cookies-path buffer)))))
  
  (define-class internal-buffer (user-buffer)
    ((style #.(cl-css:css
  
negative.code:                        ;; Dead buffer ID must be renewed before calling `ffi-buffer-make'.
                         (setf (id dead-buffer) (get-unique-buffer-identifier *browser*))
                         (ffi-buffer-make dead-buffer))
                       (apply #'make-instance (cond
                                                (internal-buffer-p 'user-internal-buffer)
                                                (nosave-buffer-p 'user-nosave-buffer)
                                                (t 'user-web-buffer))
                              :id (get-unique-buffer-identifier *browser*)
                              (append (when title `(:title ,title))
                                      (when default-modes `(:default-modes ,default-modes))
  