我每次保存时如何进行Emacs备份？(How can I make Emacs backup every time I save?)

我每次保存时如何进行Emacs备份？(How can I make Emacs backup every time I save?)

我不时删除我不应该写的文件，而最糟糕的是我自己写的文件。 因此，我有很多次被Emacs的备份功能保存。

但我的问题是，Emacs只是在您第一次保存缓冲区时才进行备份。 每次按Cx Cs时，有没有办法让Emacs做到这一点？

这就是我的.emacs当前的样子（只有处理备份的部分）：

*剪辑*

;; =====备份=====

;; 启用备份文件。 （setq make-backup-files t）

;; 将所有备份文件保存在此目录中。 （setq backup-directory-alist（quote（（“。*”。“〜/ .emacs_backups /”））））

;; 始终通过复制备份（最安全，但最慢） （setq备份复制t）

;; 在保存备份时追加〜1〜（和增加数字）到文件结尾 （setq版本控制t）

;; 定义要保留多少个旧版本的文件（从文件开始） ;; 最近的，倒计时的 （setq保持新版本100）

*剪辑*

From time to time I delete files that I shouldn't and worst is files that I've been writing myself. Therefore I have many times been saved by the backup feature of Emacs.

But my problem is that Emacs only makes a backup the very first time you save a buffer. Is there a way to make Emacs do it every time I press C-x C-s?

This is what my .emacs look like currently (only the part that deals with backups):

* snip *

;; ===== Backups =====

;; Enable backup files. (setq make-backup-files t)

;; Save all backup file in this directory. (setq backup-directory-alist (quote ((".*" . "~/.emacs_backups/"))))

;; Always backup by copying (safest, but slowest) (setq backup-by-copying t)

;; Append .~1~ (and increasing numbers) to end of file when saving backup (setq version-control t)

;; Defining how many old versions of a file to keep (starting from the ;; most recent and counting backward (setq kept-new-versions 100)

* snip *

最满意答案

阅读本文后： EmacsWiki：强制备份

我将这些行添加到我的.emacs中：

(defun force-backup-of-buffer () (setq buffer-backed-up nil)) (add-hook 'before-save-hook 'force-backup-of-buffer)

它使用标准备份/版本控制，但在保存之前重置指示缓冲区已在此会话中备份的标志。

前两行定义了一个函数，用于重置指示在此会话期间备份缓冲区的标志。

最后一行添加一个事件挂钩，在保存之前执行该函数。

这正是我想要的。

After reading this: EmacsWiki: Force Backups

I added these lines to my .emacs:

(defun force-backup-of-buffer () (setq buffer-backed-up nil)) (add-hook 'before-save-hook 'force-backup-of-buffer)

It utilizes the standard back up/version control but resets the flag that indicates wether or not the buffer has been backed up this session before a save.

First two rows define a function that resets the flag that indicates wether the buffer was backed up during this session.

Last row adds an event hook that executes the function before a save.

This does exactly what I wanted.