Pertaining to whether @ should trigger for op AND oper. With the $nick identifier I can specify custom usermodes. A server I script for uses ', so to check for them I use $nick(#,$nick,').
It could be a solution to allow the prefixes to not be so fixed so that you can only use . or @ but instead be able to include non-formal usermodes. It sounds like it could cause issues or be too much of a pain to implement. But just in case I wanted to offer this idea.
Thank you.
