# HG changeset patch
# User Matthew Wild <mwild1@gmail.com>
# Date 1327276759 0
# Node ID 316e2b09a562ada0afb51e09fcc42953219a14cf
# Parent  db27a4c18b6a900585a722db4acf2fb634724ef8
util.set: Accept nil to add_list()

diff -r db27a4c18b6a -r 316e2b09a562 util/set.lua
--- a/util/set.lua	Sun Jan 22 23:57:13 2012 +0000
+++ b/util/set.lua	Sun Jan 22 23:59:19 2012 +0000
@@ -82,8 +82,10 @@
 	end
 	
 	function set:add_list(list)
-		for _, item in ipairs(list) do
-			items[item] = true;
+		if list then
+			for _, item in ipairs(list) do
+				items[item] = true;
+			end
 		end
 	end