Update Improve exact choice recipe ingredients#13788
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kennytv merged 3 commits intoPaperMC:mainfrom Apr 29, 2026
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This PR updates the last remaining feature patch to 26.1
I'd personally pay close attention to the following two parts when reviewing this PR:
io.papermc.paper.inventory.recipe.ItemOrExact#getMaxStackSizenet.minecraft.world.item.crafting.Ingredient#displayAs for 1, I took the code from
net.minecraft.world.item.Item#getDefaultMaxStackSize, which is how vanilla is handling the max stack size now.As for 2, the record constructor
net.minecraft.world.item.crafting.display.SlotDisplay.ItemStackSlotDisplayno longer expects anItemStack, but anItemStackTemplateinstead. I took as reference the code atorg.bukkit.craftbukkit.inventory.CraftItemStack#asTemplate. In theory itemstacks at this point in the code should not be empty. An alternative approach would be to useSlotDisplay.ItemSlotDisplayinstead should that be a concern, or create a helper method that creates templates considering the possibility of empty items.