diff options
| -rw-r--r-- | lisp/so-long.el | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/lisp/so-long.el b/lisp/so-long.el index 5c9711b0bb0..982a699667a 100644 --- a/lisp/so-long.el +++ b/lisp/so-long.el @@ -1801,6 +1801,23 @@ or call the function `global-so-long-mode'.") (message "Error unloading so-long: %S %S" (car err) (cdr err)) t)))) +;; Backwards-compatibility definitions. +;; +;; The following obsolete functions may exist in the user's customized hook +;; values dating from versions < 1.0, so we need to ensure that such saved +;; values will not trigger errors. +(cl-flet ((ignore () nil)) + (dolist (hookfunc '((so-long-inhibit-whitespace-mode . so-long-hook) + (so-long-make-buffer-read-only . so-long-hook) + (so-long-revert-buffer-read-only . so-long-revert-hook) + (so-long-inhibit-global-hl-line-mode . so-long-mode-hook))) + (defalias (car hookfunc) #'ignore + (format "Obsolete function. It now does nothing. + +If it appears in `%s', you should remove it." + (cdr hookfunc))) + (make-obsolete (car hookfunc) nil "so-long.el version 1.0"))) + (provide 'so-long) |