refactor chat message then you haven't the required privs

mods/MISC/mcl_commands/init.lua

@@ -216,7 +216,11 @@ function mcl_commands.build(func, def)
 						return sub.func(unpack(params))
 					end
 				else
-					return false, "You don't have permission to run this command (missing privilege: "..minetest.serialize(missing_privs)..")" --TODO:replace message
+					local missing_privs_str = ""
+					for i = 1, #missing_privs do
+						missing_privs_str = missing_privs_str..missing_privs[i].." "
+					end
+					return false, "You don't have permission to run this command (missing privilege: "..missing_privs_str..")" --TODO:replace message
 				end
 			end
 		end
@@ -225,11 +229,7 @@ function mcl_commands.build(func, def)
 	if not def.params then
 		def.params = ""
 	end
-	local params_help = ""
+	cmd.params = def.params
-	for i = 1, #cmd._subs do
-		params_help = params_help..def.params.." "..cmd._subs[i].params_desc.." "
-	end
-	cmd.params = params_help
 	cmd.privs = def.privs
 	cmd.description = def.description
 	return cmd

mods/MISC/mcl_commands/title.lua

@@ -108,7 +108,6 @@ mcl_commands.register_command("title", function(cmd)
 		func = function(name, target, json)
 			return mcl_title.set(target, "title", json)
 		end,
-		params = "<json>",
 	})
 	cmd:sub(":name:username subtitle :params:json", {
 		func = function(name, target, json)
@@ -137,6 +136,7 @@ mcl_commands.register_command("title", function(cmd)
 	})
 end, {
     description = "Controls text displayed on the screen.",
+	params = "<target> command <params>",
     privs = {
         server = true,
     }