Re: [PATCH] diff: squelch empty diffs even more

> Hmm.  Like this?
>
> The patch adds a new diff_options bitfield member, no_index, that
> is used instead of the special value of -2 of the rev_info field
> max_count to indicate that the index is not to be used.  This makes
> it possible to pass that flag down to diffcore_skip_stat_unmatch(),
> which only has one diff_options parameter.
>
> This could even become a cleanup if we removed all assignments of
> max_count to a value of -2 (viz. replacement of a magic value with
> a self-documenting field name) but I didn't dare to do that so late
> in the rc game..
>
> The no_index bit, if set, then tells diffcore_skip_stat_unmatch()
> to not account for any skipped stat-mismatches, which avoids the
> suggestion to run git-status.