(vc-string-prefix-p): New function.

(vc-dir-parent-marked-p): Use it.

2 files changed, 14 insertions, 5 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 5b097d2d851..9965fa6a27f 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,8 @@
+2008-05-27  Stefan Monnier  <monnier@iro.umontreal.ca>
+
+        * vc-dispatcher.el (vc-string-prefix-p): New function.
+        (vc-dir-parent-marked-p): Use it.
+
 2008-05-27  Dan Nicolaescu  <dann@ics.uci.edu>
 
         * vc.el (Problems): Remove fixed issues.
@@ -6,14 +11,14 @@
         (vc-make-backend-object): Fix name.
         (vc-dir-show-fileentry): Fix docstring.
         (vc-dir-refresh): Use vc-dir-backend.  Fix docstring.
-        (vc-dir-refresh-files): Use vc-dir-backend.  Fix docstring.  Reset
-        the state for directories.
+        (vc-dir-refresh-files): Use vc-dir-backend.  Fix docstring.
+        Reset the state for directories.
         (vc-dir-headers): Align labels.
         (vc-default-status-printer): Do no call prettify-state-info.
         (vc-deduce-fileset): Replace implementation with one based on a
         working older version.
-        (vc-next-action): Use the new form of vc-deduce-fileset.  Fix
-        dealing with unregistered files.
+        (vc-next-action): Use the new form of vc-deduce-fileset.
+        Fix dealing with unregistered files.
 
         * vc-dispatcher.el (vc-resynch-window): Fix mode-line updating.
         (vc-dir-menu-map): Fix menu title for the menu bar and the popup menu.
diff --git a/lisp/vc-dispatcher.el b/lisp/vc-dispatcher.el
index 8e9cf21d3c7..116e9476bf3 100644
--- a/lisp/vc-dispatcher.el
+++ b/lisp/vc-dispatcher.el
@@ -1024,6 +1024,10 @@ If a prefix argument is given, move by that many lines."
             (funcall mark-unmark-function))))
     (funcall mark-unmark-function)))
 
+(defun vc-string-prefix-p (prefix string)
+  (and (>= (length string) (length prefix))
+       (eq t (compare-strings prefix nil nil string nil (length prefix)))))
+
 (defun vc-dir-parent-marked-p (arg)
   ;; Return nil if none of the parent directories of arg is marked.
   (let* ((argdir (vc-dir-node-directory arg))
@@ -1036,7 +1040,7 @@ If a prefix argument is given, move by that many lines."
       (setq data (ewoc-data crt))
       (setq dir (vc-dir-node-directory crt))
       (when (and (vc-dir-fileinfo->directory data)
-                 (string-equal (substring argdir 0 (length dir)) dir))
+                 (vc-string-prefix-p dir argdir))
         (when (vc-dir-fileinfo->marked data)
           (error "Cannot mark `%s', parent directory `%s' marked"
                  (vc-dir-fileinfo->name (ewoc-data arg))