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 * furnished to do so, subject to the following conditions:
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package org.spongepowered.common.mixin.core.command;

import net.minecraft.command.FunctionObject;
import net.minecraft.command.ICommand;
import org.spongepowered.api.Sponge;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.injection.At;
import org.spongepowered.asm.mixin.injection.Redirect;

import java.util.Map;

@Mixin(FunctionObject.class)
public abstract class FunctionObjectMixin {

    @Redirect(method = "create", at = @At(value = "INVOKE", target = "Ljava/util/Map;containsKey(Ljava/lang/Object;)Z", remap = false))
    private static boolean impl$checkForAlias(final Map<String, ICommand> unused, final Object name) {
        return Sponge.getCommandManager().containsAlias((String) name);
    }
}

@@ -1874,14 +1874,23 @@
 nd%3E 
-unused
+vanillaCommands
 , fi
@@ -1978,16 +1978,53 @@
 g) name)
+ %7C%7C vanillaCommands.containsKey(name)
 ;%0A    %7D%0A

Fix function pack loading issue - Fixes SpongePowered/SpongeVanilla#414