From fd4daefb29f2922937849a207812fe368260f43e Mon Sep 17 00:00:00 2001
From: HybridDog <3192173+HybridDog@users.noreply.github.com>
Date: Wed, 11 Mar 2020 16:25:14 +0100
Subject: [PATCH] minetest.get_content_id: error if the node does not exist
 (#9458)

If a mod creator makes a typing mistake, this function now causes an error instead of returning the id of "ignore".
---
 src/script/lua_api/l_item.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/script/lua_api/l_item.cpp b/src/script/lua_api/l_item.cpp
index a76e5527a..0c174feca 100644
--- a/src/script/lua_api/l_item.cpp
+++ b/src/script/lua_api/l_item.cpp
@@ -612,9 +612,11 @@ int ModApiItemMod::l_get_content_id(lua_State *L)
 	std::string name = luaL_checkstring(L, 1);
 
 	const NodeDefManager *ndef = getGameDef(L)->getNodeDefManager();
-	content_t c = ndef->getId(name);
+	content_t content_id;
+	if (!ndef->getId(name, content_id))
+		throw LuaError("Unknown node: " + name);
 
-	lua_pushinteger(L, c);
+	lua_pushinteger(L, content_id);
 	return 1; /* number of results */
 }