Minecraft Version

1.21.x

Version

1.115.0

Details

THERE IS NOT A CRASH OR ERROR, SO NO LOGS EXIST

To reproduce:

1. Create a lua program
2. Wrap an inventory peripheral
3. Fetch item details from the inventory
4. Update the returned information
5. Don't see changes in the the actual item (or an error message)

Example lua program:

inv = peripheral.warp("left")
item = inv.getItemDetail(1)
item.displayName = "Test"

When ran this program will not update the item's display name to "Test". If this is inteaded I expect to see an error instead.

No, every time you invoke getItemDetail, it returns a separate copy of the item data.
When you editing the table, you are only editing the copy, not the raw one.
You cannot edit the raw data by CC directly

Sorry for posting an incomplete issue, browser was being stupid. FIXED

No, every time you invoke getItemDetail, it returns a separate copy of the item data. When you editing the table, you are only editing the copy, not the raw one. You cannot edit the raw data by CC directly

If that's the case then I expect to see an error as this would cause confusion when people think there operation worked.

You are doing valid Lua operations, so there won't be & shouldn't be any error.
And if you continue accessing item.displayName later, it will return "Test", which is completely what should happen.

You just have to know that the Lua table will never sync with item datas, which means, after you change the item data, the Lua table won't update, and when you update the Lua table, in game item won't sync either.

Yeah, that makes snese.

Could the documentation for getItemDetail say "A copy of the information about the item in this slot, or nil if not present." instead of "Information about the item in this slot, or nil if not present." to make this more clear to beginners?

I think these are the methods which return a copy of information in the world, so we should update all of these:

• inventory.list()
• inventory.getItemDetail()
• turtle.getItemDetail()
• turtle.inspect()
• turtle.getEquippedLeft()/turtle.getEquippedRight().
• commands.getBlockInfo()/commands.getBlockInfos()
• fluid.tanks()