From 4639f6fecd0de4d5dbff75a2d9cc8d10f4d13aaa Mon Sep 17 00:00:00 2001
From: "W. Trevor King" <wking@drexel.edu>
Date: Sat, 21 Aug 2010 15:05:41 -0400
Subject: [PATCH] Clear NoteIndexList in .__setstate__ to avoid doubling items
 during engine->UI passing.

---
 hooke/playlist.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/hooke/playlist.py b/hooke/playlist.py
index 3380bfc..6e8f232 100644
--- a/hooke/playlist.py
+++ b/hooke/playlist.py
@@ -82,6 +82,7 @@ class NoteIndexList (list):
 
     def __setstate__(self, state):
         self._set_ignored_attrs()
+        self.clear()
         for key,value in self._default_attrs.items():
             setattr(self, key, value)
         for key,value in state.items():
@@ -113,6 +114,10 @@ class NoteIndexList (list):
         """
         pass
 
+    def clear(self):
+        while len(self) > 0:
+            self.pop()
+
     def index(self, value=None, *args, **kwargs):
         """Extend `list.index`, returning the current index if `value`
         is `None`.
-- 
2.26.2