Get rid of recursive call in default.dig_up

game.conf

@@ -1,4 +1,4 @@
 title       = Minetest Game
 author      = Minetest
 description = A basic exploration, mining, crafting, and building, sandbox game with no NPCs, monsters, or animals. Minetest Game is usually used with mods added, and many mods are available for this game. Reliably maintained by Minetest Engine core developers.
-min_minetest_version = 5.8
+min_minetest_version = 5.9

mods/default/functions.lua

@@ -293,15 +293,46 @@ minetest.register_abm({
 -- Dig upwards
 --
 
-function default.dig_up(pos, node, digger)
+local in_dig_up = false
+
+---Find all nodes above this one that is the same, then dig them all
+---@param pos vector The position of the base node
+---@param node { name: string, param1: integer, param2: integer } Node table of the base node
+---@param digger ObjectRef The object (e.g. player) digging the node
+---@param max_height The maximum height to search for, excluding the base node
+function default.dig_up(pos, node, digger, max_height)
+	if in_dig_up then return end -- Do not recurse
 	if digger == nil then return end
-	local np = {x = pos.x, y = pos.y + 1, z = pos.z}
-	local nn = minetest.get_node(np)
-	if nn.name == node.name then
-		minetest.node_dig(np, nn, digger)
+	max_height = max_height or 100
+
+	in_dig_up = true
+	for y = pos.y + 1, pos.y + max_height do
+		local up_pos  = vector.new(pos.x, y, pos.z)
+		local up_node = minetest.get_node(up_pos)
+		if up_node.name ~= node.name then
+			break
+		end
+		local noerr, success = xpcall(function()
+			return minetest.dig_node(up_pos, digger)
+		end, function(...)
+			in_dig_up = false
+			local errmsg = "Error raised during `default.dig_up` call: " .. minetest.error_handler(...)
+			for line in errmsg:gmatch("([^\n]*)\n?") do
+				minetest.log("error", line)
+			end
+		end)
+		if not noerr then
+			error("Error raised during `default.dig_up` call")
+		elseif not success then
+			break
+		end
 	end
+	in_dig_up = false
 end
 
+minetest.register_globalstep(function()
+	in_dig_up = false
+end)
 
 --
 -- Fence registration helper

mods/default/init.lua

@@ -17,7 +17,7 @@ default.get_translator = S
 -- and avoids obscure, hard to debug runtime errors.
 -- This section should be updated before release and older checks can be dropped
 -- when newer ones are introduced.
-if ItemStack("").add_wear_by_uses == nil then
+if not minetest.features.node_interaction_actor then
 	error("\nThis version of Minetest Game is incompatible with your engine version "..
 		"(which is too old). You should download a version of Minetest Game that "..
 		"matches the installed engine version.\n")