anchor.diff:                                  ;; for presentation-to-command-translators,
                                   ;; which are searched for in
                                   ;; (frame-command-table *application-frame*)
  -                                (redisplay-frame-pane ,frame (frame-standard-input ,frame) :force-p t)
  +                                (redisplay-frame-pane ,frame (frame-standard-input ,frame))
                                   (setf (frame-command-table ,frame) command-table)
                                   (process-gestures-or-command ,frame))
                               (unbound-gesture-sequence (c)
  
positive.code:   (apply #'prompt-for-accept pane type view args)
    ;; but we need to turn some of ACCEPT-1 off.
    (apply #'accept-1-for-minibuffer pane type args))
  
  ;;; simpler version of McCLIM's internal operators of the same names:
  ;;; HANDLE-EMPTY-INPUT to make default processing work, EMPTY-INPUT-P
  
negative.code: current message was set."))
    (:default-initargs
     :scroll-bars nil
     :display-function 'display-minibuffer
     :display-time :command-loop
     :incremental-redisplay t))
  
  (defmethod handle-repaint ((pane minibuffer-pane) region)
    (when (and (message pane)
               (> (get-universal-time)
                  (+ *minimum-message-time* (message-time pane))))
      (window-clear pane)
      (setf (message pane) nil))
    (call-next-method))
  
  (defmethod (setf message) :after (new-value (pane minibuffer-pane))
    (change-space-requirements pane))
  
  (defmethod pane-needs-redisplay ((pane minibuffer-pane))
    ;; Always call the display function, never clear the window. This
    ;; allows us to time-out the message in the minibuffer.
    (values t nil))
  
  (defun display-minibuffer (frame pane)
    (declare (ignore frame))
    (handle-repaint pane +everywhere+))
  
  (defmethod stream-accept :around ((pane minibuffer-pane) type &rest args)
    (declare (ignore args))
    (when (message pane)
      (setf (message pane) nil))
    (window-clear pane)
    ;; FIXME: this isn't the friendliest way of indicating a parse
    ;; error: there's no feedback, unlike emacs' quite nice "[no
    ;; match]".
    (unwind-protect
         (loop
          (handler-case
              (with-input-focus (pane)
                (return (call-next-method)))
            (parse-error () nil)))
      (window-clear pane)))
  
  (defmethod stream-accept ((pane minibuffer-pane) type &rest args
                            &key (view (stream-default-view pane))
  