Re: diff-mode misinterprets empty lines.

[Richard Stallman]

    When people don't want trailing whitespace warnings to trigger in their
    editor, they should obviously amend diff-mode for that.  But changing
    the diff format instead is insane.  And that patch happens to have
    tolerance code intended to deal with utterly broken mailers is no excuse
    for that.

Are you suggesting I should ask the diff maintainers to revert that
change?  That might be a good idea.

But in the mean time let's make Emacs work with the format generated
by diff 2.8.7.  Even if diff 2.8.8 undoes this change, 2.8.7 won't
disappear.  Would someone please do that and ack?