It would be nigh on impossible for Khaled to incorporate what is essentially an artificially intelligent code checker in mIRC, not to mention not hugely useful. If you're writing the code then one assumes you know what it's SUPPOSED to do, and if it does do that then mIRC telling you it's doing it is pointless. If you want mIRC to predict that your code is wrong, then yes, given the scope of mIRC's scripting language it would be impossible.
Sorry.
Regards,
