In the meantime I think about a workaround for it that I can suggest, I want to thank you for your clear explanation and your time. I wonder of it would be possible to enable a switch for non-explicit irc server commands to be tracked, showing script/line number for them.
My usual situation is receiving an "ELSE unknown command" which leaves me clueless and I guess the same thing happens to a few more mirc scripters.
Thank you again for your time.