Prevent ForgeCaps from being set with zero size (#421)

mezz · Sep 8, 2016 · 9bd0ee5 · 9bd0ee5
1 parent ecba234
commit 9bd0ee5
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/src/main/java/mezz/jei/util/StackHelper.java b/src/main/java/mezz/jei/util/StackHelper.java
@@ -389,7 +389,10 @@ public String getUniqueIdentifierForStack(@Nonnull ItemStack stack, @Nonnull Uid
 				if (nbtTagCompound == null) {
 					nbtTagCompound = new NBTTagCompound();
 				}
-				nbtTagCompound.setTag("ForgeCaps", serializedNbt.getCompoundTag("ForgeCaps"));
+				NBTTagCompound forgeCaps = serializedNbt.getCompoundTag("ForgeCaps");
+				if (!forgeCaps.hasNoTags()) { // ForgeCaps should never be empty
+					nbtTagCompound.setTag("ForgeCaps", forgeCaps);
+				}
 			}
 			if (nbtTagCompound != null && !nbtTagCompound.hasNoTags()) {
 				itemKey.append(':').append(nbtTagCompound);