Paper/patches/server/0837-Fix-Bukkit-NamespacedKey-shenanigans.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Nassim Jahnke <jahnke.nassim@gmail.com>
Date: Sun, 24 Oct 2021 15:49:35 +0200
Subject: [PATCH] Fix Bukkit NamespacedKey shenanigans


diff --git a/src/main/java/com/destroystokyo/paper/loottable/PaperMinecartLootableInventory.java b/src/main/java/com/destroystokyo/paper/loottable/PaperMinecartLootableInventory.java
index 6d2e0493729b7b4e109ff103a6ac36c9901568c0..83dd3c254fd10e4596e454cc75c8e5e976b73ac0 100644
--- a/src/main/java/com/destroystokyo/paper/loottable/PaperMinecartLootableInventory.java
+++ b/src/main/java/com/destroystokyo/paper/loottable/PaperMinecartLootableInventory.java
@@ -16,7 +16,7 @@ public class PaperMinecartLootableInventory implements PaperLootableEntityInvent
 
     @Override
     public org.bukkit.loot.LootTable getLootTable() {
-        return entity.lootTable != null ? Bukkit.getLootTable(CraftNamespacedKey.fromMinecraft(entity.lootTable)) : null;
+        return entity.lootTable != null && !entity.lootTable.getPath().isEmpty() ? Bukkit.getLootTable(CraftNamespacedKey.fromMinecraft(entity.lootTable)) : null;
     }
 
     @Override
diff --git a/src/main/java/com/destroystokyo/paper/loottable/PaperTileEntityLootableInventory.java b/src/main/java/com/destroystokyo/paper/loottable/PaperTileEntityLootableInventory.java
index 3377b86c337d0234bbb9b0349e4034a7cd450a97..94dc68182ec5f6dc1294ad15523427836228086a 100644
--- a/src/main/java/com/destroystokyo/paper/loottable/PaperTileEntityLootableInventory.java
+++ b/src/main/java/com/destroystokyo/paper/loottable/PaperTileEntityLootableInventory.java
@@ -15,7 +15,7 @@ public class PaperTileEntityLootableInventory implements PaperLootableBlockInven
 
     @Override
     public org.bukkit.loot.LootTable getLootTable() {
-        return tileEntityLootable.lootTable != null ? Bukkit.getLootTable(CraftNamespacedKey.fromMinecraft(tileEntityLootable.lootTable)) : null;
+        return tileEntityLootable.lootTable != null && !tileEntityLootable.lootTable.getPath().isEmpty() ? Bukkit.getLootTable(CraftNamespacedKey.fromMinecraft(tileEntityLootable.lootTable)) : null;
     }
 
     @Override
diff --git a/src/main/java/org/bukkit/craftbukkit/util/CraftNamespacedKey.java b/src/main/java/org/bukkit/craftbukkit/util/CraftNamespacedKey.java
index 5f40d240b879e3989897b6e45725a8e5a6a7f194..5014192edb9616ce725fc1592832034789527b6f 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/CraftNamespacedKey.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/CraftNamespacedKey.java
@@ -13,7 +13,7 @@ public final class CraftNamespacedKey {
             return null;
         }
         ResourceLocation minecraft = ResourceLocation.tryParse(string);
-        return (minecraft == null) ? null : CraftNamespacedKey.fromMinecraft(minecraft);
+        return (minecraft == null || minecraft.getPath().isEmpty()) ? null : CraftNamespacedKey.fromMinecraft(minecraft); // Paper - Bukkit's parser does not match Vanilla for empty paths
     }
 
     public static NamespacedKey fromString(String string) {