Ya, the problem comes down to what's actually put up into the little editor box. There's no connection between the information you see there and what you are actually editing. I just make note of the line of information, where in the line the information was found and the line number. It's not really meant to be edited.
Now what you ask is possible, but would require a complete re-write of that section. Since I've barely had time to work on it at all, large additions like that are almost impossible.
But it's a good feature, and I'll add it to the wish list. So when I win the lottery and have lots of spare time I can add those special features.
