From c77a81cf65069ecd8749437b46abc53a304fc917 Mon Sep 17 00:00:00 2001 From: "Richard M. Stallman" Date: Thu, 1 Jul 1993 18:39:58 +0000 Subject: [PATCH] (set-visited-file-name): Rename the old auto save file. --- lisp/files.el | 26 +++++++++++++++----------- 1 file changed, 15 insertions(+), 11 deletions(-) diff --git a/lisp/files.el b/lisp/files.el index 3782a79472..66adbba5f2 100644 --- a/lisp/files.el +++ b/lisp/files.el @@ -1093,17 +1093,21 @@ if you wish to pass an empty string as the argument." (progn (make-local-variable 'backup-inhibited) (setq backup-inhibited t))) - ;; If auto-save was not already on, turn it on if appropriate. - (if (not buffer-auto-save-file-name) - (and buffer-file-name auto-save-default - (auto-save-mode t)) - ;; If auto save is on, start using a new name. - ;; We deliberately don't rename or delete the old auto save - ;; for the old visited file name. This is because perhaps - ;; the user wants to save the new state and then compare with the - ;; previous state from the auto save file. - (setq buffer-auto-save-file-name - (make-auto-save-file-name))) + (let ((oauto buffer-auto-save-file-name)) + ;; If auto-save was not already on, turn it on if appropriate. + (if (not buffer-auto-save-file-name) + (and buffer-file-name auto-save-default + (auto-save-mode t)) + ;; If auto save is on, start using a new name. + ;; We deliberately don't rename or delete the old auto save + ;; for the old visited file name. This is because perhaps + ;; the user wants to save the new state and then compare with the + ;; previous state from the auto save file. + (setq buffer-auto-save-file-name + (make-auto-save-file-name))) + ;; Rename the old auto save file if any. + (and oauto buffer-auto-save-file-name + (rename-file oauto buffer-auto-save-file-name t))) (if buffer-file-name (set-buffer-modified-p t))) -- 2.39.2