- (cond (cancel
- (setq mdw-designated-window nil)
- (message "Window designation cleared."))
- (t
- (setq mdw-designated-window (selected-window))
- (message "Window designated."))))
-
-(setq display-buffer-base-action
- (let* ((action display-buffer-base-action)
- (funcs (car action))
- (alist (cdr action)))
- (cons (cons 'mdw-display-buffer-in-designated-window funcs) alist)))
+ (let ((window (selected-window)))
+ (cond (cancel
+ (setq mdw-designated-window nil)
+ (unless (mdw-emacs-version-p 24)
+ (setq display-buffer-function nil))
+ (message "Window designation cleared."))
+ ((window-dedicated-p window)
+ (error "Window is dedicated to its buffer."))
+ (t
+ (setq mdw-designated-window window)
+ (unless (mdw-emacs-version-p 24)
+ (setq display-buffer-function
+ #'mdw-designated-window-display-buffer-function))
+ (message "Window designated.")))))
+
+(when (mdw-emacs-version-p 24)
+ (setq display-buffer-base-action
+ (let* ((action display-buffer-base-action)
+ (funcs (car action))
+ (alist (cdr action)))
+ (cons (cons 'mdw-display-buffer-in-designated-window funcs)
+ alist))))