From e32b8cfddb5821a7eea1fb74d9cd6c0fac9d09c4 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Wed, 1 Jul 2020 05:42:51 -0400
Subject: [PATCH] Improve old UUID support, clean up old legacy keys.

If we set a UUID to new format, need to make sure old format doesn't
exist anymore. Additionally, ensure if new format exists, we prefer it over old.
---
 .../Support-old-UUID-format-for-NBT.patch       | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/Spigot-Server-Patches/Support-old-UUID-format-for-NBT.patch b/Spigot-Server-Patches/Support-old-UUID-format-for-NBT.patch
index 2d88b65f2a..9b8a3ec027 100644
--- a/Spigot-Server-Patches/Support-old-UUID-format-for-NBT.patch
+++ b/Spigot-Server-Patches/Support-old-UUID-format-for-NBT.patch
@@ -11,12 +11,25 @@ diff --git a/src/main/java/net/minecraft/server/NBTTagCompound.java b/src/main/j
 index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
 --- a/src/main/java/net/minecraft/server/NBTTagCompound.java
 +++ b/src/main/java/net/minecraft/server/NBTTagCompound.java
+@@ -0,0 +0,0 @@ public class NBTTagCompound implements NBTBase {
+ 
+     public void setUUID(String prefix, UUID uuid) { a(prefix, uuid); } // Paper - OBFHELPER
+     public void a(String s, UUID uuid) {
++        // Paper start - support old format
++        if (this.hasKeyOfType(s + "Most", 99) && this.hasKeyOfType(s + "Least", 99)) {
++            this.map.remove(s + "Most");
++            this.map.remove(s + "Least");
++        }
++        // Paper end
+         this.map.put(s, GameProfileSerializer.a(uuid));
+     }
+ 
 @@ -0,0 +0,0 @@ public class NBTTagCompound implements NBTBase {
      @Nullable public UUID getUUID(String prefix) { return a(prefix); } // Paper - OBFHELPER
      @Nullable
      public UUID a(String s) {
 +        // Paper start - support old format
-+        if (hasKey(s + "Least") && hasKey(s + "Most")) {
++        if (!hasKeyOfType(s, 11) && this.hasKeyOfType(s + "Most", 99) && this.hasKeyOfType(s + "Least", 99)) {
 +            return new UUID(this.getLong(s + "Most"), this.getLong(s + "Least"));
 +        }
 +        // Paper end
@@ -26,7 +39,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
      public final boolean hasUUID(String s) { return this.b(s); } // Paper - OBFHELPER
      public boolean b(String s) {
 +        // Paper start - support old format
-+        if (hasKey(s + "Least") && hasKey(s + "Most")) {
++        if (this.hasKeyOfType(s + "Most", 99) && this.hasKeyOfType(s + "Least", 99)) {
 +            return true;
 +        }
 +        // Paper end