Surely you can't be serious. The IRC RFC (1459) has nothing to do with this discussion. The IRC RFC discusses IRC, whereas we are discussing URLs. Therefore, the URL RFC is the appropriate standard to use. And just because mIRC doesn't claim compliance with it doesn't mean it shouldn't shoot for it. There is no better standard for what defines a URL than that. All of the web browsers and web servers around the world aim to comply with it, why not mIRC? The fix can't be that difficult, and it has the added bonus of bringing it into the modern age (read: finally up to date with the 90s) of what defines a URL.