I didn't say "now", I talked about "hopes". E.g. hopes for "Source" Control Tool being aware of refactorings and other *operations* I apply to my program, instead of treating it as a plain text with some changes of unknown nature. I'm not sure it's possible right now (I know it's not, better to say?). But with a Smalltalk-based source control we can have it on one splendid day in the future. And I think on the Git way we'll finish with just some advanced text-comparison algorithms. No?