我想在buffer变化时执行一行代码，保存输入法状态现在是用 pre-command hook和post command hook，但是有可能buffer切换不是因为commandh导致的，所以问一下
(defun imbot--pre-command-switcher ()
(setq imbot--last-buffer (current-buffer)))
(defun imbot--post-command-switcher ()
;; (message "2 this command %s" this-command)
(cond
;; restore im state after prefix sequence completed
((and (not imbot--prefix-override) this-command)
(setq imbot--prefix-override t)
(imbot--maybe-activate-im))
;; save im state on buffer switch and restore im state
((not (eq imbot--last-buffer (current-buffer)))
(when (buffer-live-p imbot--last-buffer)
(with-current-buffer imbot--last-buffer
(imbot--save-state)))
(imbot--maybe-activate-im))
(t nil)))
cireu
2
after-change-functions
豆知识：-functions结尾的变量往往代表这是一个会被带参数调用的hook变量（具体什么参数看docstring）
不是指这个，应该是切换focused buffer，就是当前buffer发生变化的时候
感觉和 pre-redisplay-functions 一样，不能知道之前的buffer，而这个命令是要在之前的buffer执行
wsug
7
切换到其它buffer，不能知道之前的buffer是那个? 这个问题我是在执行切换成其它buffer前定义一个变量存放上一个buffer的名字解决(setq my-before-buffer (buffer-file-name))
嗯 那就放到pre-command-hook进行保存，就是担心一些忽然冒出的buffer
感觉这个可能行
(defun redisplay--pre-redisplay-functions (windows)
(with-demoted-errors "redisplay--pre-redisplay-functions: %S"
;; 在这里保存
(setq my-last-buffer (current-buffer))
(if (null windows)
(with-current-buffer (window-buffer (selected-window))
(run-hook-with-args 'pre-redisplay-functions (selected-window)))
(dolist (win (if (listp windows) windows (window-list-1 nil nil t)))
(with-current-buffer (window-buffer win)
(run-hook-with-args 'pre-redisplay-functions win))))))