Re: diff-mode misinterprets empty lines.

[Stefan Monnier]

>> GNU diff since version 2.8.7 outputs empty lines in the unified diff
>> format for empty context lines that don't change (instead of single
>> space followed by newline). See, e.g., the thread starting here:
>> 
>> <http://lists.gnu.org/archive/html/bug-gnu-utils/2006-09/msg00005.html>

> I have to agree with those thinking it is a terrible idea to prune
> trailing spaces that are part of the _diff_ format.

Agreed as well, this is a terrible idea.  Making tools somewhat robust
in the face of lost trailing whitespace is good (diff-mode does that),
but actively removing them is bad.

What's the benefit, really?
The original post said "This doesn't really matter..." and I agree with
this part.  So breaking every/most program that parses diffs just
because "when the only trailing blanks in a diff are those in context headers,
it's a little annoying" seems gratuitous.

Could you please revert this change?


        Stefan "Author of Emacs's diff-mode"