I was just making a valid point raccoon, RFC compliant or not. Most networks now allow you to register channels. While you assume adding that line to be of no use, I feel you have overlooked the fact that many people use mIRC across multiple networks.
If this script is network specific and you don't wish to adapt it so it doesn't cause problems on other networks, you should at least put that in the description.
I spent quite a bit of time on EFnet when I first started learning eggdrops and tcl scripting. I really don't recall a channel mode +r and I don't know of any networks that use it for anything other than registered channel.