Index: sites/all/modules/views_calc/views_calc.module
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- sites/all/modules/views_calc/views_calc.module	(revision 956)
+++ sites/all/modules/views_calc/views_calc.module	(revision )
@@ -83,7 +83,7 @@
     'shortdate' => 'format_date:small',
     'mediumdate' => 'format_date',
     'longdate' => 'format_date:large',
-    'custom' => '',
+    'custom' => 'custom',
   );
   return $options;
 }