(generate-file-autoloads): Fix FILE truename hacking to substring

SOURCE-TRUENAME instead of FILE.

diff --git a/lisp/emacs-lisp/autoload.el b/lisp/emacs-lisp/autoload.el
index 10f614f..0950a1a 100644 (file)
--- a/lisp/emacs-lisp/autoload.el
+++ b/lisp/emacs-lisp/autoload.el
@@ -122,13 +122,13 @@ are used."
     ;; subdirectory of the current buffer's directory, we'll make it
     ;; relative to the current buffer's directory.
     (setq file (expand-file-name file))
-    (let ((source-truename (file-truename file))
-         (dir-truename (file-name-as-directory
-                        (file-truename default-directory))))
-      (if (and (< (length dir-truename) (length source-truename))
-              (string= dir-truename
-                       (substring source-truename 0 (length dir-truename))))
-         (setq file (substring file (length dir-truename)))))
+    (let* ((source-truename (file-truename file))
+          (dir-truename (file-name-as-directory
+                         (file-truename default-directory)))
+          (len (length dir-truename)))
+      (if (and (< len (length source-truename))
+              (string= dir-truename (substring source-truename 0 len)))
+         (setq file (substring source-truename len))))
 
     (message "Generating autoloads for %s..." file)
     (save-excursion