It doesn't matter if he intended to follow the RFC, dude. mIRC currently incorrectly selects URLs. What was originally written to provide a convenience to the end-user is now putting more work on the end-user. It should be fixed. The correct answer is not to make the user adjust what they are doing because what they are doing is not wrong. Again, if the developers behind mIRC are going to just sit idle and make the users work around the client's bugs, they need a serious beating with the clue bat. The only reason for leaving this bug in mIRC is pure laziness.
