Turtle inventory sort

print("Press CTRL+T to stop")
local turtle_inventory_slot = 1
local selected_item_details = turtle.getItemDetail(turtle_inventory_slot)
local inventory_details = 1
local open_inventory_slot = 1

--Sort inventory of turtle
while turtle_inventory_slot <= 16 do
	turtle.select(turtle_inventory_slot)
	selected_item_details = turtle.getItemDetail(turtle_inventory_slot)

	if selected_item_details ~= nil then
		if selected_item_details.name ~= "minecraft:netherrack" then
			turtle.dropUp()
		else --Space has correct item in it
			turtle.transferTo(open_inventory_slot)
			open_inventory_slot = open_inventory_slot + 1
		end
	end
	turtle_inventory_slot = turtle_inventory_slot + 1

end