cherry-pick fixes

platform/fabric/src/main/java/mcp/mobius/waila/fabric/FabricServerCommand.java

@@ -11,6 +11,7 @@
 import net.minecraft.server.level.ServerPlayer;
 import org.jetbrains.annotations.Nullable;
 
+@SuppressWarnings("UnstableApiUsage")
 public class FabricServerCommand extends ServerCommand {
 
     @Override
@@ -25,7 +26,7 @@ public class FabricServerCommand extends ServerCommand {
                     ? offHandStack.getItem()
                     : BuiltInRegistries.ITEM.getRandom(world.random).orElseThrow().value();
 
-                if (storage.insert(ItemVariant.of(item), item.getDefaultMaxStackSize(), tx) == 0L) break;
+                if (storage.insert(ItemVariant.of(item), item.getMaxStackSize(), tx) == 0L) break;
             }
             tx.commit();
             return null;

platform/forge/src/main/java/mcp/mobius/waila/forge/ForgeServerCommand.java

@@ -25,7 +25,7 @@ public class ForgeServerCommand extends ServerCommand {
                 ? offHandStack.getItem()
                 : BuiltInRegistries.ITEM.getRandom(world.random).orElseThrow().value();
 
-            handler.insertItem(i, new ItemStack(item, item.getDefaultMaxStackSize()), false);
+            handler.insertItem(i, new ItemStack(item, item.getMaxStackSize()), false);
         }
 
         return null;

platform/quilt/build.gradle.kts

@@ -15,6 +15,7 @@ dependencies {
     modCompileRuntime("org.quiltmc.quilted-fabric-api:fabric-key-binding-api-v1:${rootProp["qfapi"]}")
     modCompileRuntime("org.quiltmc.quilted-fabric-api:fabric-rendering-v1:${rootProp["qfapi"]}")
     modCompileRuntime("org.quiltmc.quilted-fabric-api:fabric-mining-level-api-v1:${rootProp["qfapi"]}")
+    modCompileRuntime("org.quiltmc.quilted-fabric-api:fabric-transfer-api-v1:${rootProp["qfapi"]}")
 
     modCompileRuntime("com.terraformersmc:modmenu:${rootProp["modMenu"]}")
 

platform/quilt/src/main/java/mcp/mobius/waila/quilt/QuiltServerCommand.java

@@ -0,0 +1,36 @@
+package mcp.mobius.waila.quilt;
+
+import mcp.mobius.waila.command.ServerCommand;
+import net.fabricmc.fabric.api.transfer.v1.item.ItemStorage;
+import net.fabricmc.fabric.api.transfer.v1.item.ItemVariant;
+import net.fabricmc.fabric.api.transfer.v1.transaction.Transaction;
+import net.minecraft.core.BlockPos;
+import net.minecraft.core.Direction;
+import net.minecraft.core.registries.BuiltInRegistries;
+import net.minecraft.server.level.ServerLevel;
+import net.minecraft.server.level.ServerPlayer;
+import org.jetbrains.annotations.Nullable;
+
+@SuppressWarnings("UnstableApiUsage")
+public class QuiltServerCommand extends ServerCommand {
+
+    @Override
+    protected @Nullable String fillContainer(ServerLevel world, BlockPos pos, ServerPlayer player) {
+        var storage = ItemStorage.SIDED.find(world, pos, Direction.UP);
+        if (storage == null) return "No storage at " + pos.toShortString();
+
+        try (var tx = Transaction.openOuter()) {
+            while (true) {
+                var offHandStack = player.getOffhandItem();
+                var item = !offHandStack.isEmpty()
+                    ? offHandStack.getItem()
+                    : BuiltInRegistries.ITEM.getRandom(world.random).orElseThrow().value();
+
+                if (storage.insert(ItemVariant.of(item), item.getMaxStackSize(), tx) == 0L) break;
+            }
+            tx.commit();
+            return null;
+        }
+    }
+
+}

platform/quilt/src/main/java/mcp/mobius/waila/quilt/QuiltWaila.java

@@ -19,7 +19,7 @@ public void onInitialize(ModContainer mod) {
         Packets.initServer();
 
         CommandRegistrationCallback.EVENT.register((dispatcher, registryAccess, environment) ->
-            new ServerCommand().register(dispatcher));
+            new QuiltServerCommand().register(dispatcher));
 
         ServerLifecycleEvents.STARTING.register(server -> PluginConfig.reload());
         ServerLifecycleEvents.STOPPED.register(server -> onServerStopped());

src/main/java/mcp/mobius/waila/command/ServerCommand.java

@@ -19,6 +19,7 @@
 import net.minecraft.commands.Commands;
 import net.minecraft.commands.arguments.EntityArgument;
 import net.minecraft.commands.arguments.coordinates.BlockPosArgument;
+import net.minecraft.core.BlockPos;
 import net.minecraft.core.registries.BuiltInRegistries;
 import net.minecraft.network.FriendlyByteBuf;
 import net.minecraft.network.chat.ClickEvent;