From c51876b4d6fea0da3a561aaab2afd526dc0604ac Mon Sep 17 00:00:00 2001
From: Valentin Lorentz <progval@progval.net>
Date: Thu, 31 Jul 2014 18:43:40 +0200
Subject: [PATCH] Allow TruncatableSet to get no argument.

---
 src/utils/structures.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/utils/structures.py b/src/utils/structures.py
index 1be386ffd..db2a7706b 100644
--- a/src/utils/structures.py
+++ b/src/utils/structures.py
@@ -457,7 +457,7 @@ class CacheDict(collections.MutableMapping):
 class TruncatableSet(collections.MutableSet):
     """A set that keeps track of the order of inserted elements so
     the oldest can be removed."""
-    def __init__(self, iterable):
+    def __init__(self, iterable=[]):
         self._ordered_items = list(iterable)
         self._items = set(self._ordered_items)
     def __contains__(self, item):