* vc/vc-hooks.el (vc-find-file-hook): `buffer-file-truename' can

be nil.  Handle this.  (Bug#13636)

2 files changed, 9 insertions, 2 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index a0e88362c4b..4211901d64f 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,8 @@
+2013-02-07  Michael Albinus  <michael.albinus@gmx.de>
+
+        * vc/vc-hooks.el (vc-find-file-hook): `buffer-file-truename' can
+        be nil.  Handle this.  (Bug#13636)
+
 2013-02-07  Richard Stallman  <rms@gnu.org>
 
         * mail/rmail.el (rmail-variables): Specify `no-conversion' for
diff --git a/lisp/vc/vc-hooks.el b/lisp/vc/vc-hooks.el
index 818b37b3c34..5c8a4515b7e 100644
--- a/lisp/vc/vc-hooks.el
+++ b/lisp/vc/vc-hooks.el
@@ -858,8 +858,10 @@ current, and kill the buffer that visits the link."
           (set (make-local-variable 'backup-inhibited) t))
         ;; Let the backend setup any buffer-local things he needs.
         (vc-call-backend backend 'find-file-hook))
-       ((let* ((truename (expand-file-name buffer-file-truename))
-               (link-type (and (not (equal buffer-file-name truename))
+       ((let* ((truename (and buffer-file-truename
+                              (expand-file-name buffer-file-truename)))
+               (link-type (and truename
+                               (not (equal buffer-file-name truename))
                                (vc-backend truename))))
           (cond ((not link-type) nil)   ;Nothing to do.
                 ((eq vc-follow-symlinks nil)