1 files changed, 19 insertions, 1 deletions
diff --git a/modules/user/user.module b/modules/user/user.module
index 622fe4d25..c1c7ec218 100644
--- a/modules/user/user.module
+++ b/modules/user/user.module
@@ -1517,15 +1517,33 @@ function theme_user_list($variables) {
   return theme('item_list', array('items' => $items, 'title' => $title));
 }
 
+/**
+ * Determines if the current user is anonymous.
+ *
+ * @return bool
+ *   TRUE if the user is anonymous, FALSE if the user is authenticated.
+ */
 function user_is_anonymous() {
   // Menu administrators can see items for anonymous when administering.
   return !$GLOBALS['user']->uid || !empty($GLOBALS['menu_admin']);
 }
 
+/**
+ * Determines if the current user is logged in.
+ *
+ * @return bool
+ *   TRUE if the user is logged in, FALSE if the user is anonymous.
+ */
 function user_is_logged_in() {
   return (bool) $GLOBALS['user']->uid;
 }
 
+/**
+ * Determines if the current user has access to the user registration page.
+ *
+ * @return bool
+ *   TRUE if the user is not already logged in and can register for an account.
+ */
 function user_register_access() {
   return user_is_anonymous() && variable_get('user_register', USER_REGISTER_VISITORS_ADMINISTRATIVE_APPROVAL);
 }
@@ -3353,7 +3371,7 @@ function user_filters() {
   $options = array();
   foreach (module_implements('permission') as $module) {
     $function = $module . '_permission';
-    if ($permissions = $function('permission')) {
+    if ($permissions = $function()) {
       asort($permissions);
       foreach ($permissions as $permission => $description) {
         $options[t('@module module', array('@module' => $module))][$permission] = t($permission);