From f33a17faf75dd914b5d7d7fdfac9220c87110b0c Mon Sep 17 00:00:00 2001
From: Shane Freeder <theboyetronic@gmail.com>
Date: Tue, 9 Mar 2021 21:06:09 +0000
Subject: [PATCH] Fix creating worlds with "invalid" names (Fixes #5331)

---
 Spigot-API-Patches/Implement-Keyed-on-World.patch | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Spigot-API-Patches/Implement-Keyed-on-World.patch b/Spigot-API-Patches/Implement-Keyed-on-World.patch
index 41f5b7481..0942b80ee 100644
--- a/Spigot-API-Patches/Implement-Keyed-on-World.patch
+++ b/Spigot-API-Patches/Implement-Keyed-on-World.patch
@@ -98,7 +98,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 -            throw new IllegalArgumentException("World name cannot be null");
 -        }
 +        // Paper start
-+        this(name, NamespacedKey.minecraft(name));
++        this(name, NamespacedKey.minecraft(name.toLowerCase(java.util.Locale.ENGLISH)));
 +    }
  
 -        this.name = name;