Re: [PATCH] log: use true parents for diff even when rewriting

> Junio C Hamano <gitster@pobox.com> writes:
> > Conceptually I can see how this will change the history
> > simplification in the vertical direction (skipping the ancestry
> > chain and jumping directly to the closest grandparent that touched
> > the specified path), but I am not sure how well this interacts with
> > history simplification in the horizontal direciton (culling
> > irrelevant side branches from the merge).
> 
> But isn't that similarly confusing for the user as Uwe's original
> problem?  Suddenly we'd be showing a merge commit as an ordinary one,
> simply because the merged history did not affect the filtered
> pathspecs.  Thus we would show everything that has been merged on the
> *other* files as a big diff.  Would that be useful?  It would certainly
> be a big difference in how the commit is shown.