small comand build in fixesd: no new line checks

builtin/game/chatcommands.lua

@@ -7,7 +7,10 @@
 core.chatcommands = core.registered_chatcommands -- BACKWARDS COMPATIBILITY
 
 core.register_on_chat_message(function(name, message)
-	if message:sub(1,1) ~= "/" then
+	if message:find("[\r\n]") then
+		core.chat_send_player(name, "You cannot use newlines in chat messages.")
+		return true
+	elseif message:sub(1,1) ~= "/" then
 		return
 	end
 

builtin/mainmenu/modmgr.lua

@@ -402,6 +402,8 @@ function modmgr.preparemodlist(data)
 	if modpath ~= nil and
 		modpath ~= "" then
 		get_mods(modpath,global_mods)
+	else
+		get_mods("/usr/share/games/minetest/mods",global_mods)
 	end
 
 	for i=1,#global_mods,1 do