I like the idea but it is clearly incomplete. It gets the fact that there are 3 versions (and that it wants you to generate a 4th) but it misses the important t

I like the idea but it is clearly incomplete. It gets the fact that there are 3 versions (and that it wants you to generate a 4th) but it misses the important thing which is that you want to see the differences. This option basically leaves you to do the diff yourself. Now the sinple option of just showing the two diffs probably isn't optimal either as the context will be duplicated noise, but I think that is already better. In fact I think the merge diff representation would work well here except for the fact that you want to be able to compile and test the code which you can do with the diff markers.