fixed single nodename crash

worldeditadditions_commands/commands/wireframe/wcompass.lua

@@ -11,23 +11,22 @@ worldedit.register_command("wcompass", {
 	require_pos = 1,
 	parse = function(params_text)
 		local parts = wea.split(params_text," ",true)
+		if not parts[1] then
+			return false, "Error: too few arguments! Expected: \"<replace_node> [<bead_node>]\""
+		elseif not parts[2] then
+			parts[2] = parts[1]
+		end
 		local node1 = worldedit.normalize_nodename(parts[1])
 		local node2 = worldedit.normalize_nodename(parts[2])
 		if not node1 then
 			return false, "Invalid <replace_node>: " .. parts[1]
-		elseif parts[2] and not node2 then
+		elseif not node2 then
 			return false, "Invalid <bead_node>: " .. parts[2]
-		elseif not parts[2] then
-			node2 = node1
 		end
 		return true, node1, node2
 	end,
 	nodes_needed = function(name)
-		local p1, p2, total = worldedit.pos1[name], worldedit.pos2[name], 1
-		for k,v in pairs({"x","y","z"}) do
-			if p1[v] ~= p2[v] then total = total*2 end
-		end
-		return total
+		return 26
 	end,
 	func = function(name, node1, node2)
 		local _, count = wea.make_compass(worldedit.pos1[name], node1, node2)