+ (let* ((backup (concat user-init-file ".backup"))
+ (backup-p
+ (and (not (file-exists-p backup))
+ (progn
+ (copy-file user-init-file backup)
+ t))))
+ (customize-set-value 'load-home-init-file nil)
+ (custom-migrate-custom-file (make-custom-file-name user-init-file
+ 'force-new))
+ (message "Moving init file...")
+ (let ((new-user-init-file (expand-file-name user-init-file-base
+ user-init-directory)))
+ (rename-file user-init-file new-user-init-file)
+ (setq user-init-file new-user-init-file))
+ (message "Migration done.")
+ (and backup-p backup)))
+
+(defun create-compatibility-dot-emacs ()
+ "Create .emacs compatibility file for migrated setup."
+ (message "Creating .emacs compatibility file.")
+ (with-temp-file (expand-file-name ".emacs" "~")
+ (insert ";;; XEmacs backwards compatibility file\n")
+ (insert "(setq user-init-file\n")
+ (insert " (expand-file-name \"init.el\"\n")
+ (insert " (expand-file-name \".xemacs\" \"~\")))\n")
+ (insert "(setq custom-file\n")
+ (insert " (expand-file-name \"custom.el\"\n")
+ (insert " (expand-file-name \".xemacs\" \"~\")))\n")
+ (insert "\n")
+ (insert "(load-file user-init-file)\n")
+ (insert "(load-file custom-file)"))
+ (message "Created .emacs compatibility file."))
+
+(defun maybe-unmigrate-user-init-file ()
+ "Possibly unmigrate the user's init and custom files."
+ (interactive)
+ (let ((dot-emacs-file-name (expand-file-name ".emacs" "~")))
+ (if (and (not load-home-init-file)
+ (or (not (file-exists-p dot-emacs-file-name))
+ (yes-or-no-p-minibuf (concat "Overwrite " dot-emacs-file-name
+ "? "))))
+ (unmigrate-user-init-file dot-emacs-file-name))))
+
+(defun unmigrate-user-init-file (&optional target-file-name)
+ "Unmigrate the user's init and custom files."
+ (interactive)
+ (let ((target-file-name
+ (or target-file-name (expand-file-name ".emacs" "~"))))
+ (rename-file user-init-file target-file-name 'ok-if-already-exists)
+ (setq user-init-file target-file-name)
+ (let ((old-custom-file custom-file))
+ (custom-migrate-custom-file target-file-name)
+ (customize-save-variable 'load-home-init-file t)
+ (delete-file old-custom-file))))