Issue #2681291 by osopolar: Token for fieldcollection delta

field_collection.tokens.inc

@@ -28,6 +28,10 @@ function field_collection_token_info() {
     'name' => t('Host entity ID'),
     'description' => t('The entity ID of the host. For nodes this is <code>nid</code>, for users <code>uid</code>.'),
   );
+  $host['delta'] = array(
+    'name' => t('Host entity item delta'),
+    'description' => t('The delta of the reference pointing to this field collection item.'),
+  );
 
   // Chained tokens.
   foreach (field_collection_host_entity_types() as $entity_type => $entity_info) {
@@ -96,6 +100,7 @@ function field_collection_tokens($type, $tokens, array $data = array(), array $o
         'type' => 'hostEntityType',
         'bundle' => 'hostEntityBundle',
         'id' => 'hostEntityId',
+        'delta' => 'delta',
       );
       $entity_types = field_collection_host_entity_types();
       foreach ($tokens as $name => $orig) {