Index: includes/common.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/common.inc,v
retrieving revision 1.587
diff -u -F^f -r1.587 common.inc
--- includes/common.inc	16 Nov 2006 09:18:22 -0000	1.587
+++ includes/common.inc	18 Nov 2006 04:53:38 -0000
@@ -702,6 +702,9 @@ function valid_email_address($mail) {
 /**
  * Verify the syntax of the given URL.
  *
+ * This function should only be used on actual URLs. It should not be used for
+ * Drupal menu paths, which can contain arbitrary characters.
+ *
  * @param $url
  *   The URL to verify.
  * @param $absolute
Index: modules/path/path.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/path/path.module,v
retrieving revision 1.98
diff -u -F^f -r1.98 path.module
--- modules/path/path.module	17 Nov 2006 06:57:59 -0000	1.98
+++ modules/path/path.module	18 Nov 2006 04:53:39 -0000
@@ -224,10 +224,7 @@ function path_nodeapi(&$node, $op, $arg)
     switch ($op) {
       case 'validate':
         $node->path = trim($node->path);
-        if ($node->path && !valid_url($node->path)) {
-          form_set_error('path', t('The path is invalid.'));
-        }
-        else if (db_result(db_query("SELECT COUNT(dst) FROM {url_alias} WHERE dst = '%s' AND src != '%s'", $node->path, "node/$node->nid"))) {
+        if (db_result(db_query("SELECT COUNT(dst) FROM {url_alias} WHERE dst = '%s' AND src != '%s'", $node->path, "node/$node->nid"))) {
           form_set_error('path', t('The path is already in use.'));
         }
         break;
@@ -345,14 +342,6 @@ function path_form_validate($form_id, $f
   $dst = $form_values['dst'];
   $pid = $form_values['pid'];
 
-  if (!valid_url($src)) {
-    form_set_error('src', t('The system path %path is invalid.', array('%path' => $src)));
-  }
-
-  if (!valid_url($dst)) {
-    form_set_error('dst', t('The alias %alias is invalid.', array('%alias' => $dst)));
-  }
-
   if (db_result(db_query("SELECT COUNT(dst) FROM {url_alias} WHERE pid != %d AND dst = '%s'", $pid, $dst))) {
     form_set_error('dst', t('The alias %alias is already in use.', array('%alias' => $dst)));
   }