[Emacs-diffs] Changes to emacs/lisp/vc-hooks.el,v [EMACS_22_BASE]

[Stefan Monnier]

CVSROOT:        /sources/emacs
Module name:    emacs
Branch:         EMACS_22_BASE
Changes by:     Stefan Monnier <monnier>        08/02/16 21:38:25

Index: vc-hooks.el
===================================================================
RCS file: /sources/emacs/emacs/lisp/vc-hooks.el,v
retrieving revision 1.182.2.16
retrieving revision 1.182.2.17
diff -u -b -r1.182.2.16 -r1.182.2.17
--- vc-hooks.el 16 Feb 2008 20:21:16 -0000      1.182.2.16
+++ vc-hooks.el 16 Feb 2008 21:38:24 -0000      1.182.2.17
@@ -316,11 +316,12 @@
 If WITNESS if not found, return nil, otherwise return the root."
   ;; Represent /home/luser/foo as ~/foo so that we don't try to look for
   ;; witnesses in /home or in /.
-  (while (not (file-directory-p file))
-    (setq file (file-name-directory (directory-file-name file))))
   (setq file (abbreviate-file-name file))
   (let ((root nil)
-        (user (nth 2 (file-attributes file))))
+        ;; `user' is not initialized outside the loop because
+        ;; `file' may not exist, so we may have to walk up part of the
+        ;; hierarchy before we find the "initial UID".
+        (user nil))
     (while (not (or root
                     (null file)
                     ;; As a heuristic, we stop looking up the hierarchy of
@@ -328,7 +329,9 @@
                     ;; to another user.  This should save us from looking in
                     ;; things like /net and /afs.  This assumes that all the
                     ;; files inside a project belong to the same user.
-                    (not (equal user (nth 2 (file-attributes file))))
+                    (let ((prev-user user))
+                      (setq user (nth 2 (file-attributes file)))
+                      (and prev-user (not (equal user prev-user))))
                     (string-match vc-ignore-dir-regexp file)))
       (if (file-exists-p (expand-file-name witness file))
           (setq root file)