Fix bug#5345: password asked when visiting files on a lightweight checkout.

* vc-bzr.el (vc-bzr-working-revision): On Windows and MS-DOS, accept
  URLs with a leading triple slash in the file: scheme.

lisp/ChangeLog

+2010-01-09  Juanma Barranquero  <lekktu@gmail.com>
+
+	* vc-bzr.el (vc-bzr-working-revision): On Windows and MS-DOS, accept
+	URLs with a leading triple slash in the file: scheme.  (Bug#5345)
+
 2010-01-09  Chong Yidong  <cyd@stupidchicken.com>
 
 	* progmodes/compile.el: Don't treat compile-command as safe if

lisp/vc-bzr.el

@@ -361,6 +361,11 @@ If any error occurred in running `bzr status', then return nil."
 		     ;; look there for the version information.
 		     (when (re-search-forward "file://\\(.+\\)" nil t)
 		       (let ((l-c-parent-dir (match-string 1)))
+			 (when (and (memq system-type '(ms-dos windows-nt))
+				    (string-match-p "^/[[:alpha:]]:" l-c-parent-dir))
+			   ;;; On Windows, file:// URLs often have three slashes,
+			   ;;; so we must remove the remaining one (bug#5345)
+			   (setq l-c-parent-dir (substring l-c-parent-dir 1)))
 			 (setq branch-format-file
 			       (expand-file-name vc-bzr-admin-branch-format-file
 						 l-c-parent-dir))