This is not an issue for me, because - which is strange - the diff viewers I use seem to be more advanced than my editors, in that the diff viewers can ignore u

This is not an issue for me, because - which is strange - the diff viewers I use seem to be more advanced than my editors, in that the diff viewers can ignore unimportant whitespace changes while editors can't handle alignment properly :-) But that is a trade-off, of course.