PaperMC/paper-server/patches/sources/com/mojang/brigadier/builder/ArgumentBuilder.java.patch

--- a/com/mojang/brigadier/builder/ArgumentBuilder.java
+++ b/com/mojang/brigadier/builder/ArgumentBuilder.java
@@ -14,9 +_,17 @@
 import java.util.function.Predicate;
 
 public abstract class ArgumentBuilder<S, T extends ArgumentBuilder<S, T>> {
+    // Paper start - Vanilla command permission fixes
+    private static final Predicate<Object> DEFAULT_REQUIREMENT = s -> true;
+
+    @SuppressWarnings("unchecked")
+    public static <S> Predicate<S> defaultRequirement() {
+        return (Predicate<S>) DEFAULT_REQUIREMENT;
+    }
+    // Paper end - Vanilla command permission fixes
     private final RootCommandNode<S> arguments = new RootCommandNode<>();
     private Command<S> command;
-    private Predicate<S> requirement = s -> true;
+    private Predicate<S> requirement = defaultRequirement(); // Paper - Vanilla command permission fixes
     private CommandNode<S> target;
     private RedirectModifier<S> modifier = null;
     private boolean forks;