[codethief]

I think we're completely talking past each other. OP wrote:

> Reviewers should always see only the changes since their last review, no matter how many crazy git operations happen behind the scenes.

I merely wanted to know how they achieve that with git.

[crabbone]

Not only do I think that's a pipe dream... I think it's technically impossible... I mean, diff has to show also what happened before whatever change took place. How do they expect not to see what was replaced? Or maybe I just don't understand what they mean by "changes since their last review".