That's not always the case, and sometimes if you don't know the language very well - in my case, Ruby - then certain patterns aren't available to you and it looks hokey without you realizing it.
That's the douchiest diff I've seen yet. I've seen diffs where a shitty and misconfigured IDE had reformatted half the code and the guy hadn't reviewed his diff, but "incidentally spaces to tab" is the biggest "fuck you reviewer" I can think of.
