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;;; init-files.el --- File management -*- lexical-binding: t; -*-
;; Copyright (C) 2026 Richard Qin
;; SPDX-License-Identifier: GPL-3.0-or-later
;; Author: Richard Qin
;; This file is not part of GNU Emacs.
;;; Commentary:
;; Configure file backups and automatic saving.
;; Store generated files under the var/ directory.
;;; Code:
;; ------------------------------------------------------------
;; Directories
;; ------------------------------------------------------------
(defvar my/backup-directory
(expand-file-name "var/backups/" user-emacs-directory)
"Directory for backup files.")
(defvar my/auto-save-directory
(expand-file-name "var/auto-save/" user-emacs-directory)
"Directory for auto-save files.")
(defvar my/auto-save-list-directory
(expand-file-name "var/auto-save-list/" user-emacs-directory)
"Directory for auto-save session records.")
(dolist (dir (list my/backup-directory
my/auto-save-directory
my/auto-save-list-directory))
(make-directory dir t))
;; ------------------------------------------------------------
;; Backups
;; ------------------------------------------------------------
;; Enable backup files.
(setq make-backup-files t)
;; Store all backups in a dedicated directory.
(setq backup-directory-alist
`(("." . ,my/backup-directory)))
;; Use numbered backups.
(setq version-control t)
;; Keep several versions of each file.
(setq kept-new-versions 10
kept-old-versions 2
delete-old-versions t)
;; ------------------------------------------------------------
;; Auto-save
;; ------------------------------------------------------------
;; Enable automatic saving.
(setq auto-save-default t)
;; Store auto-save files in a dedicated directory.
;; SHA-1 avoids excessively long generated filenames.
(setq auto-save-file-name-transforms
`((".*" ,my/auto-save-directory sha1)))
;; Store auto-save session records separately.
(setq auto-save-list-file-prefix
(expand-file-name
".saves-"
my/auto-save-list-directory))
(provide 'init-files)
;;; init-files.el ends here
|
