You would still not know where in the text the control codes were, so editing would be a pain, even if you think you cleared some control codes, it may just be that those left are not visible to you (control+o or a control+k before a space with a control+o after it).

The wysiwyg method works fine for word processors, but i have my doubts about its convenience and usefulness in a chat client like mirc.

"Allen is having a small problem and needs help adjusting his attitude" - Flutterby