From dfd7cae20fd8003f69986c93169ddd6678384961 Mon Sep 17 00:00:00 2001
From: Wuzzy <almikes@aol.com>
Date: Sat, 11 Feb 2017 12:39:41 +0100
Subject: Fix crash with tools with empty digging groups

---
 init.lua | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'init.lua')

diff --git a/init.lua b/init.lua
index 16895fd..3c028f2 100644
--- a/init.lua
+++ b/init.lua
@@ -1027,7 +1027,11 @@ doc.add_category("tools", {
 			end
 		-- Final tiebreaker: Sort by group name
 		else
-			return comp[1].group < comp[2].group
+			if comp[1].group and comp[2].group then
+				return comp[1].group < comp[2].group
+			else
+				return false
+			end
 		end
 	end,
 	build_formspec = function(data, playername)
-- 
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