From 85cb7ef47e33371d7568249e4128b3bcb9513957 Mon Sep 17 00:00:00 2001
From: Damien Elmes <git@ichi2.net>
Date: Sat, 18 May 2013 18:57:24 +0900
Subject: [PATCH] ignore _ in field references (#803)

---
 anki/media.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/anki/media.py b/anki/media.py
index 6808715e6..d7e51cbe4 100644
--- a/anki/media.py
+++ b/anki/media.py
@@ -211,7 +211,7 @@ If the same name exists, compare checksums."""
                 unused.append(file)
             else:
                 del normrefs[nfile]
-        nohave = normrefs.keys()
+        nohave = [x for x in normrefs.keys() if not x.startswith("_")]
         return (nohave, unused)
 
     def allMedia(self):