commit 571cc343fc8827def82727382b66ceb023fb0dfc
Author: Joel Pittet <joel@pittet.ca>
Date:   Mon Apr 20 08:59:06 2015 -0700

    fast static

diff --git a/pathauto.module b/pathauto.module
index 2bc2fd0..5b35039 100644
--- a/pathauto.module
+++ b/pathauto.module
@@ -362,7 +362,14 @@ function pathauto_field_attach_form($entity_type, $entity, &$form, &$form_state,
  * Implements hook_entity_load().
  */
 function pathauto_entity_load($entities, $type) {
-  static $path_auto_entity_types;
+  static $drupal_static_fast;
+
+  if (!isset($drupal_static_fast)) {
+    $drupal_static_fast = &drupal_static(__FUNCTION__);
+  }
+
+  $path_auto_entity_types = &$drupal_static_fast;
+
   // Save the entity types used statically to avoid unnessasary queries later.
   if (!isset($path_auto_entity_types)) {
     $path_auto_entity_types = db_query("SELECT entity_type FROM {pathauto_state} GROUP BY entity_type")->fetchAllKeyed(0, 0);
@@ -412,6 +419,7 @@ function pathauto_entity_presave($entity, $type) {
   if (isset($entity->path['pathauto']) && !isset($entity->path['alias'])) {
     $entity->path['alias'] = '';
   }
+  drupal_static_reset('pathauto_entity_load');
 }
 
 /**
@@ -461,6 +469,9 @@ function pathauto_entity_state_load($entity_type, $entity_id) {
  *   An entity type.
  * @param $entity_ids
  *   An array of entity IDs.
+ *
+ * @return
+ *   An array of the state of pathauto keyed by the entity_id.
  */
 function pathauto_entity_state_load_multiple($entity_type, $entity_ids) {
   static $table_exists;
@@ -485,7 +496,7 @@ function pathauto_entity_state_load_multiple($entity_type, $entity_ids) {
 
   // Filter out entity_ids that are not integers.
   $entity_ids = array_filter($entity_ids, 'is_numeric');
-  // if everything was filtered out, return an empty array
+  // If everything was filtered out, return an empty array.
   if (empty($entity_ids)) {
     return array();
   }