Bugfix.

multiblock.lua

@@ -32,20 +32,32 @@ digiline_routing.multiblock.build2 = function(node1, node2, itemstack, placer, p
 	minetest.set_node(pos, {name = node1, param2 = dir})
 	minetest.set_node(botpos, {name = node2, param2 = dir})
 
+	digiline:update_autoconnect(pos)
+	digiline:update_autoconnect(botpos)
+
 	if not minetest.setting_getbool("creative_mode") then
 		itemstack:take_item()
 	end
 	return itemstack, true
 end
 
+local removing_head = false
+
 digiline_routing.multiblock.dig2 = function(pos, node)
+	if removing_head then
+		error("Infinite recursion detected")
+	end
+	removing_head = true
 	local dir = minetest.facedir_to_dir(node.param2)
 	local tail = vector.add(pos, dir)
-	minetest.swap_node(tail, {name = "air"}) -- not remove_node
+	minetest.dig_node(tail)
+	removing_head = false
 end
 
 digiline_routing.multiblock.dig2b = function(pos, node)
 	local dir = minetest.facedir_to_dir(node.param2)
 	local head = vector.subtract(pos, dir)
-	minetest.remove_node(head)
+	if not removing_head then
+		minetest.dig_node(head)
+	end
 end

splitter.lua

@@ -72,6 +72,7 @@ minetest.register_node("digiline_routing:splitter", {
 	},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	groups = {dig_immediate=2},
 	node_box = {
 		type = "fixed",
@@ -108,11 +109,14 @@ minetest.register_node("digiline_routing:splitter_b", {
 	},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
+	pointable = false,
 	groups = {dig_immediate=2, not_in_creative_inventory=1},
 	node_box = {
 		type = "fixed",
-		fixed = {{ -1/32, -31/64, -7/16, 1/32, -29/64, 7/16 }}, -- hidden, but nonempty for the case of some bug
+		fixed = {},
 	},
+	drop = "",
 	after_destruct = digiline_routing.multiblock.dig2b,
 	digiline = {
 		effector = {