From 4f2c7b18ccf4986c053b855164e7c9d6bbed6376 Mon Sep 17 00:00:00 2001
From: sfan5 <sfan5@live.de>
Date: Wed, 17 Jul 2019 01:20:40 +0200
Subject: [PATCH] Fix //allocate with 0 nodes

---
 worldedit/serialization.lua | 2 +-
 worldedit_commands/init.lua | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/worldedit/serialization.lua b/worldedit/serialization.lua
index e796fc1..ddc59cd 100644
--- a/worldedit/serialization.lua
+++ b/worldedit/serialization.lua
@@ -196,7 +196,7 @@ end
 -- @return The number of nodes.
 function worldedit.allocate(origin_pos, value)
 	local nodes = load_schematic(value)
-	if not nodes then return nil end
+	if not nodes or #nodes == 0 then return nil end
 	return worldedit.allocate_with_nodes(origin_pos, nodes)
 end
 
diff --git a/worldedit_commands/init.lua b/worldedit_commands/init.lua
index 61aafc1..cc169ee 100644
--- a/worldedit_commands/init.lua
+++ b/worldedit_commands/init.lua
@@ -1163,9 +1163,15 @@ minetest.register_chatcommand("/allocate", {
 			return
 		elseif version > worldedit.LATEST_SERIALIZATION_VERSION then
 			worldedit.player_notify(name, "File was created with newer version of WorldEdit!")
+			return
 		end
 		local nodepos1, nodepos2, count = worldedit.allocate(pos, value)
 
+		if not nodepos1 then
+			worldedit.player_notify(name, "Schematic empty, nothing allocated")
+			return
+		end
+
 		worldedit.pos1[name] = nodepos1
 		worldedit.mark_pos1(name)
 		worldedit.pos2[name] = nodepos2