commit f92c9f8a5842258713c4bd6c0746afb2c7125765
Author: fago <nuppla@zites.net>
Date:   Wed Feb 27 11:00:05 2013 +0100

    Start

diff --git a/core/lib/Drupal/Core/Config/TypedConfigManager.php b/core/lib/Drupal/Core/Config/TypedConfigManager.php
index 4a8a289..38d9bde 100644
--- a/core/lib/Drupal/Core/Config/TypedConfigManager.php
+++ b/core/lib/Drupal/Core/Config/TypedConfigManager.php
@@ -12,6 +12,9 @@
 
 /**
  * Manages config type plugins.
+ *
+ * Extends the typed data manager to process config schema definitions to
+ * regular typed data definitions before instances are created.
  */
 class TypedConfigManager extends TypedDataManager {
 
@@ -54,16 +57,18 @@ public function get($name) {
   /**
    * Overrides \Drupal\Core\TypedData\TypedDataManager::create()
    *
-   * Fills in default type and does variable replacement.
+   * Takes a config schema definition and processes it to a regular typed data
+   * definition before creation, i.e. it fills in default type and does variable
+   * replacement.
    */
   public function create(array $definition, $value = NULL, $name = NULL, $parent = NULL) {
     if (!isset($definition['type'])) {
-      // Set default type 'string' if possible. If not it will be 'undefined'.
+      // Set default type 'string' if possible. If not it will be 'any'.
       if (is_string($value)) {
         $definition['type'] = 'string';
       }
       else {
-        $definition['type'] = 'undefined';
+        $definition['type'] = 'any';
       }
     }
     elseif (strpos($definition['type'], ']')) {