Use add-hook, (provide 'meese).

(protect-innocence-hook): compare expanded file names for the sake
of non-unix file systems.  Use expand-file-name instead of concat
to create "celibacy.1" file name.  Check that the "sex.6" exists.

1 files changed, 13 insertions, 12 deletions

diff --git a/lisp/play/meese.el b/lisp/play/meese.el
index 9deb1b69b9c..8a3ad922b8a 100644
--- a/lisp/play/meese.el
+++ b/lisp/play/meese.el
@@ -9,18 +9,19 @@
 ;;; Code:
 
 (defun protect-innocence-hook ()
-  (if (and (equal (file-name-nondirectory buffer-file-name) "sex.6")
-           (not (y-or-n-p "Are you over 18? ")))
-      (progn
-        (clear-visited-file-modtime)
-        (setq buffer-file-name (concat (file-name-directory buffer-file-name)
-                                       "celibacy.1"))
-        (let (buffer-read-only) ; otherwise (erase-buffer) may bomb.
-          (erase-buffer)
-          (insert-file-contents buffer-file-name t))
-        (rename-buffer (file-name-nondirectory buffer-file-name)))))
+  (let ((dir (file-name-directory buffer-file-name)))
+    (if (and (equal buffer-file-name (expand-file-name "sex.6" dir))
+             (file-exists-p buffer-file-name)
+             (not (y-or-n-p "Are you over 18? ")))
+        (progn
+          (clear-visited-file-modtime)
+          (setq buffer-file-name (expand-file-name "celibacy.1" dir))
+          (let ((inhibit-read-only t))  ; otherwise (erase-buffer) may bomb.
+            (erase-buffer)
+            (insert-file-contents buffer-file-name t))
+          (rename-buffer (file-name-nondirectory buffer-file-name))))))
 
-(or (memq 'protect-innocence-hook find-file-hooks)
-    (setq find-file-hooks (cons 'protect-innocence-hook find-file-hooks)))
+(add-hook 'find-file-hooks 'protect-innocence-hook)
+(provide 'meese)
 
 ;;; meese.el ends here