[rmunn]

Seconded, I diff diffs all the time after a rebase or after merging the `develop` branch into my feature branch (which I sometimes do when the rebase would have produced so many merge conflicts over so many commits that it's just not worth the hassle, even using rerere — and since our team routinely uses the GitHub "Squash and merge" button, the develop->feature branch merge gets squashed away and doesn't end up showing up in the develop branch log once the PR is merged). It's the best way I've found to double-check that I didn't made a mistake in merge conflict resolution: does the diff from branchpoint to before-rebase still match the diff from new branchpoint to after-rebase? Yes? Then I probably didn't screw up the merge conflict resolution.