不造写啥标题

C-x r w (window-configuration-to-register)

Store the window configuration of the selected frame in register REGISTER. Use C-x r j to restore the configuration.

C-x r j (jump-to-register)

If the register contains a window configuration (one frame) or a frameset (all frames), restore that frame or all frames accordingly.

C-x 4 f, C-x 4 C-f (find-file-other-window)

Find file by creating a new window or reusing an existing one.

C-x 4 d (dired-other-window)

和上一个差不多。

C-x 4 0 (kill-buffer-and-window)

Kill the current buffer and delete the selected window.

C-x 4 b (switch-to-buffer-other-window)

Select specified buffer in another window.

还有一个没见过的：

C-x 4 a (add-change-log-entry-other-window)

仿佛和 change log 有关系，8清楚。

(global-set-key (kbd "M-o") 'ace-window)
(setq aw-keys '(?a ?s ?d ?f ?g ?h ?j ?k ?l))

酱就可以用 M-o 来选窗口啦。

(winner-mode +1)

酱就可以用 C-c <left>, C-c <right> 来 winner-undo 和 winner-redo 啦。