Splitting files merge with branches

Hi,

I have been using git for now 4 years, and one feature I miss a lot, that would increase the usability of git in many cases, would be having it detect "inter-file" movements, so that if I, in a single commit just part one file into many, git can track that change.

I suppose this is quite difficult, as would mean having extra features in diffs, and I don't know how could it be implemented, but that would ease even more having integration branches, and merging one with eachother.

I wouldn't either know how to split it, in the means that if 5 lines are in the middle of a split, where would those lines go? But as you have resolved quite variety of problems, you might now a way.

Just wanted to collaborate with my idea =)

Cheers,

Javier Domingo Cansino