From c225dfad6123ca5e5bb91ab8c5e467baf3df8e1c Mon Sep 17 00:00:00 2001
From: unknown <24964441+wsor4035@users.noreply.github.com>
Date: Fri, 15 Apr 2022 23:52:38 -0400
Subject: [PATCH] fix luacheck

---
 filter-injector.lua | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/filter-injector.lua b/filter-injector.lua
index a155307..fad8b47 100644
--- a/filter-injector.lua
+++ b/filter-injector.lua
@@ -66,7 +66,7 @@ local function punch_filter(data, filtpos, filtnode, msg)
 	if not fromnode then return end
 	local fromdef = minetest.registered_nodes[fromnode.name]
 	if not fromdef then return end
-	local fromtube = fromdef.tube
+	local fromtube = table.copy(fromdef.tube)
 	local input_special_cases = {
 		["technic:mv_electric_furnace"] = "dst",
 		["technic:mv_electric_furnace_active"] = "dst",