Using a tool to refactor is better for source control. The diff sucks, but it sucks because it actually found every instance and refactored properly, meaning go

Using a tool to refactor is better for source control. The diff sucks, but it sucks because it actually found every instance and refactored properly, meaning going through to review it is simpler as long as you trust the tool. We should be using tools for this type of thing, for exactly the same rules as automated formatting should be the default response to any debate on formatting issues.