XEmacs 21.4.21.

[chise/xemacs-chise.git.1] / lisp / startup.el

diff --git a/lisp/startup.el b/lisp/startup.el
index 937dcdf..44ab5c5 100644 (file)
--- a/lisp/startup.el
+++ b/lisp/startup.el
@@ -710,43 +710,56 @@ perform the migration at any time with M-x migrate-user-init-file.")
              (yes-or-no-p-minibuf (concat "Migrate init file to "
                                           user-init-directory
                                           "? "))))
-         (progn
-           (migrate-user-init-file)
-           (maybe-create-compatibility-dot-emacs))
-       (customize-save-variable 'load-home-init-file t))))
 
-(defun maybe-create-compatibility-dot-emacs ()
-  "Ask user if she wants to create a .emacs compatibility file."
-  (if (with-output-to-temp-buffer (help-buffer-name nil)
-       (progn
-         (princ "The initialization code has now been migrated to the ")
-         (princ user-init-directory)
-         (princ "directory.
+         (let ((backup (migrate-user-init-file)))
+           (with-output-to-temp-buffer (help-buffer-name nil)
+             (progn
+             (princ "The initialization code has now been migrated to the ")
+             (princ user-init-directory)
+             (princ "directory.
 
 For backwards compatibility with, for example, older versions of XEmacs,
 XEmacs can create a special old-style .emacs file in your home
 directory which will load the relocated initialization code.")
-         (show-temp-buffer-in-current-frame standard-output)
-         (yes-or-no-p-minibuf "Create compatibility .emacs? ")))
+             (if backup
+                 (progn
+                   (princ "\nMoreover, a backup of your old .emacs file was created as\n")
+                   (princ backup)
+                   (princ ".\n")))
+             (show-temp-buffer-in-current-frame standard-output)
+             (maybe-create-compatibility-dot-emacs))))
+       (customize-save-variable 'load-home-init-file t))))
+
+(defun maybe-create-compatibility-dot-emacs ()
+  "Ask user if she wants to create a .emacs compatibility file."
+  (if (yes-or-no-p-minibuf "Create compatibility .emacs? ")
       (create-compatibility-dot-emacs)))
 
 (defun migrate-user-init-file ()
-  "Migrate the init file from the home directory."
+  "Migrate the init file from the home directory.
+Return the name of backup file, if one was created."
   (interactive)
   (if (not (file-exists-p user-init-directory))
       (progn
        (message "Creating %s directory..." user-init-directory)
        (make-directory user-init-directory)))
   (message "Migrating custom file...")
-  (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."))
+  (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."