Enchantments in CraftBukkit are still broken, but it works with Essentials :)

Essentials/src/com/earth2me/essentials/EssentialsPlayerListener.java

@@ -1,5 +1,6 @@
 package com.earth2me.essentials;
 
+import com.earth2me.essentials.craftbukkit.EnchantmentFix;
 import static com.earth2me.essentials.I18n._;
 import com.earth2me.essentials.textreader.IText;
 import com.earth2me.essentials.textreader.KeywordReplacer;
@@ -114,7 +115,7 @@ public class EssentialsPlayerListener extends PlayerListener
 		}
 		if (user.getSavedInventory() != null)
 		{
-			user.getInventory().setContents(user.getSavedInventory());
+			EnchantmentFix.setContents(user.getInventory(), user.getSavedInventory());
 			user.setSavedInventory(null);
 		}
 		user.updateActivity(false);

Essentials/src/com/earth2me/essentials/InventoryWorkaround.java

@@ -1,5 +1,6 @@
 package com.earth2me.essentials;
 
+import com.earth2me.essentials.craftbukkit.EnchantmentFix;
 import java.util.HashMap;
 import java.util.Map;
 import org.bukkit.Location;
@@ -145,13 +146,13 @@ public final class InventoryWorkaround
 						{
 							ItemStack stack = item.clone();
 							stack.setAmount(item.getType().getMaxStackSize());
-							cinventory.setItem(firstFree, stack);
+							EnchantmentFix.setItem(cinventory, firstFree, stack);
 							item.setAmount(item.getAmount() - item.getType().getMaxStackSize());
 						}
 						else
 						{
 							// Just store it
-							cinventory.setItem(firstFree, item);
+							EnchantmentFix.setItem(cinventory, firstFree, item);
 							break;
 						}
 					}
@@ -230,7 +231,7 @@ public final class InventoryWorkaround
 					{
 						// split the stack and store
 						itemStack.setAmount(amount - toDelete);
-						cinventory.setItem(first, itemStack);
+						EnchantmentFix.setItem(cinventory, first, itemStack);
 						toDelete = 0;
 					}
 				}

Essentials/src/com/earth2me/essentials/commands/Commandenchant.java

@@ -2,6 +2,7 @@ package com.earth2me.essentials.commands;
 
 import com.earth2me.essentials.User;
 import com.earth2me.essentials.Util;
+import com.earth2me.essentials.craftbukkit.EnchantmentFix;
 import java.util.HashMap;
 import java.util.Locale;
 import java.util.Map;
@@ -97,7 +98,7 @@ public class Commandenchant extends EssentialsCommand
 			level = enchantment.getMaxLevel();
 		}
 		stack.addEnchantment(enchantment, level);
-		user.setItemInHand(stack);
+		EnchantmentFix.setItemInHand(user.getInventory(), stack);
 		user.updateInventory();
 		final String enchantmentName = enchantment.getName().toLowerCase(Locale.ENGLISH);
 		user.sendMessage(_("enchantmentApplied", enchantmentName.replace('_', ' ')));

Essentials/src/com/earth2me/essentials/commands/Commandgive.java

@@ -1,5 +1,6 @@
 package com.earth2me.essentials.commands;
 
+import com.earth2me.essentials.InventoryWorkaround;
 import com.earth2me.essentials.User;
 import java.util.Locale;
 import org.bukkit.ChatColor;
@@ -76,7 +77,7 @@ public class Commandgive extends EssentialsCommand
 		final User giveTo = getPlayer(server, args, 0);
 		final String itemName = stack.getType().toString().toLowerCase(Locale.ENGLISH).replace('_', ' ');
 		sender.sendMessage(ChatColor.BLUE + "Giving " + stack.getAmount() + " of " + itemName + " to " + giveTo.getDisplayName() + ".");
-		giveTo.getInventory().addItem(stack);
+		InventoryWorkaround.addItem(giveTo.getInventory(), true, stack);
 		giveTo.updateInventory();
 	}
 }

Essentials/src/com/earth2me/essentials/commands/Commandinvsee.java

@@ -2,6 +2,7 @@ package com.earth2me.essentials.commands;
 
 import static com.earth2me.essentials.I18n._;
 import com.earth2me.essentials.User;
+import com.earth2me.essentials.craftbukkit.EnchantmentFix;
 import java.util.Arrays;
 import org.bukkit.Server;
 import org.bukkit.inventory.ItemStack;
@@ -29,7 +30,7 @@ public class Commandinvsee extends EssentialsCommand
 		}
 		if (invUser == user && user.getSavedInventory() != null)
 		{
-			invUser.getInventory().setContents(user.getSavedInventory());
+			EnchantmentFix.setContents(invUser.getInventory(), user.getSavedInventory());
 			user.setSavedInventory(null);
 			user.sendMessage(_("invRestored"));
 			throw new NoChargeException();
@@ -49,7 +50,7 @@ public class Commandinvsee extends EssentialsCommand
 		{
 			throw new Exception(_("invBigger"));
 		}
-		user.getInventory().setContents(invUserStack);
+		EnchantmentFix.setContents(user.getInventory(), invUserStack);
 		user.sendMessage(_("invSee", invUser.getDisplayName()));
 		user.sendMessage(_("invSeeHelp"));
 		throw new NoChargeException();

Essentials/src/com/earth2me/essentials/commands/Commanditem.java

@@ -1,5 +1,6 @@
 package com.earth2me.essentials.commands;
 
+import com.earth2me.essentials.InventoryWorkaround;
 import static com.earth2me.essentials.I18n._;
 import com.earth2me.essentials.User;
 import java.util.Locale;
@@ -71,7 +72,7 @@ public class Commanditem extends EssentialsCommand
 
 		final String displayName = stack.getType().toString().toLowerCase(Locale.ENGLISH).replace('_', ' ');
 		user.sendMessage(_("itemSpawn", stack.getAmount(), displayName));
-		user.getInventory().addItem(stack);
+		InventoryWorkaround.addItem(user.getInventory(), true, stack);
 		user.updateInventory();
 	}
 }

Essentials/src/com/earth2me/essentials/commands/Commandkit.java

@@ -1,5 +1,6 @@
 package com.earth2me.essentials.commands;
 
+import com.earth2me.essentials.InventoryWorkaround;
 import static com.earth2me.essentials.I18n._;
 import com.earth2me.essentials.Trade;
 import com.earth2me.essentials.User;
@@ -113,7 +114,7 @@ public class Commandkit extends EssentialsCommand
 					final int id = Material.getMaterial(Integer.parseInt(parts[0])).getId();
 					final int amount = parts.length > 1 ? Integer.parseInt(parts[parts.length > 2 ? 2 : 1]) : 1;
 					final short data = parts.length > 2 ? Short.parseShort(parts[1]) : 0;
-					final HashMap<Integer, ItemStack> overfilled = user.getInventory().addItem(new ItemStack(id, amount, data));
+					final Map<Integer, ItemStack> overfilled = InventoryWorkaround.addItem(user.getInventory(), true, new ItemStack(id, amount, data));
 					for (ItemStack itemStack : overfilled.values())
 					{
 						user.getWorld().dropItemNaturally(user.getLocation(), itemStack);

Essentials/src/com/earth2me/essentials/craftbukkit/EnchantmentFix.java

@@ -0,0 +1,66 @@
+package com.earth2me.essentials.craftbukkit;
+
+import org.bukkit.craftbukkit.inventory.CraftInventory;
+import org.bukkit.craftbukkit.inventory.CraftInventoryPlayer;
+import org.bukkit.craftbukkit.inventory.CraftItemStack;
+import org.bukkit.inventory.Inventory;
+import org.bukkit.inventory.ItemStack;
+
+
+public class EnchantmentFix
+{
+	public static void setContents(Inventory inventory, ItemStack[] items)
+	{
+		CraftInventory cInventory = (CraftInventory)inventory;
+		if (cInventory.getContents().length != items.length)
+		{
+			throw new IllegalArgumentException("Invalid inventory size; expected " + cInventory.getContents().length);
+		}
+
+		net.minecraft.server.ItemStack[] mcItems = cInventory.getInventory().getContents();
+
+		for (int i = 0; i < items.length; i++)
+		{
+			ItemStack item = items[i];
+			if (item == null || item.getTypeId() <= 0)
+			{
+				mcItems[i] = null;
+			}
+			else
+			{
+				mcItems[i] = new net.minecraft.server.ItemStack(item.getTypeId(), item.getAmount(), item.getDurability());
+				new CraftItemStack(mcItems[i]).addUnsafeEnchantments(item.getEnchantments());
+			}
+		}
+	}
+
+	public static void setItem(Inventory inventory, int index, ItemStack item)
+	{
+		CraftInventory cInventory = (CraftInventory)inventory;
+		if (item == null)
+		{
+			cInventory.getInventory().setItem(index, null);
+		}
+		else
+		{
+			net.minecraft.server.ItemStack stack = new net.minecraft.server.ItemStack(item.getTypeId(), item.getAmount(), item.getDurability());
+			new CraftItemStack(stack).addUnsafeEnchantments(item.getEnchantments());
+			cInventory.getInventory().setItem(index, stack);
+		}
+	}
+	
+	public static void setItemInHand(Inventory inventory, ItemStack item)
+	{
+		CraftInventoryPlayer cInventory = (CraftInventoryPlayer)inventory;
+		if (item == null)
+		{
+			cInventory.getInventory().setItem(cInventory.getInventory().itemInHandIndex, null);
+		}
+		else
+		{
+			net.minecraft.server.ItemStack stack = new net.minecraft.server.ItemStack(item.getTypeId(), item.getAmount(), item.getDurability());
+			new CraftItemStack(stack).addUnsafeEnchantments(item.getEnchantments());
+			cInventory.getInventory().setItem(cInventory.getInventory().itemInHandIndex, stack);
+		}
+	}
+}