Я бесстыдно украл это у .emacs Стива Йегге
(defun swap-windows ()
"If you have 2 windows, it swaps them."
(interactive)
(cond ((not (= (count-windows) 2)) (message "You need exactly 2 windows to do this."))
(t
(let* ((w1 (first (window-list)))
(w2 (second (window-list)))
(b1 (window-buffer w1))
(b2 (window-buffer w2))
(s1 (window-start w1))
(s2 (window-start w2)))
(set-window-buffer w1 b2)
(set-window-buffer w2 b1)
(set-window-start w1 s2)
(set-window-start w2 s1)))))
Проверено на Emacs 23.1.1 на Gentoo. Это сохраняет размеры окна.
Я также нашел это немного чище.
(defun transpose-windows ()
(interactive)
(let ((this-buffer (window-buffer (selected-window)))
(other-buffer (prog2
(other-window +1)
(window-buffer (selected-window))
(other-window -1))))
(switch-to-buffer other-buffer)
(switch-to-buffer-other-window this-buffer)
(other-window -1)))
Также протестирован на Emacs 23.1.1