Re: combined diff does not detect binary files and ignores -diff attribute

> > It is conceivable that we _could_ newly define a "combined external diff
> > driver" that would take 3 or more files, and compute and show the combined
> > result by itself, but that will certainly not go through the codepath you
> > touched with the textconv patch. Calling out to such a new type of
> > external diff driver would have to happen at the level where we have 1+N
> > blob object names for a N-parent commit, namely, at the beginning of
> > show_patch_diff(), bypassing the entire contents of that function and
> > instead letting the new n-way external diff driver do everything.
> > 
> > I however highly doubt that such an interface would make sense. For
> > example, what would be the desirable format to compare three versions of
> > "What's cooking" postings, and how would the updated compare-cooking.perl
> > script would look like?
> 
> Yeah, currently --cc with external makes no sense, but there are several
> external tools which could present a 3-way diff in a useful way (or even
> n-way with n>3), e.g. vimdiff, kdiff3, meld.