Re: Is there a --stat or --numstat like option that'll allow me to have my cake and eat it too?

From: Junio C Hamano <gitster@pobox.com>
Date: Mar 8, 2016, 17:40 UTC
Message-ID: <xmqqoaaolvfl.fsf@gitster.mtv.corp.google.com>
In-Reply-To: <CACBZZX7o+VA1RVvja3xtBQf+rr2bWoByas4D5GKZ_VfQr7H19w@mail.gmail.com>

Ævar Arnfjörð Bjarmason <avarab@gmail.com> writes:

Show 17 quoted lines

> What I really want is something for git-log more like
> git-for-each-ref, so I could emit the following info for each file
> being modified delimited by some binary marker:
>
>     - file name before
>     - file name after
>     - is rename?
>     - is binary?
>     - size in bytes before
>     - size it bytes after
>     - removed lines
>     - added lines
>
> I think no combination of git-log options or any built-in machinery
> comes close to giving me all of that without having to do multiple
> passes with some combination of git-log and git-show, but I'd love to
> be proven wrong.

I do not think such a thing exists. From the look of the above list, if I were implementing it, I'd think it would be the easiest if it is built as a new output format of "diff" that sits next to existing --stat, --patch, and --numstat formats, i.e. you would be writing a new aevars_stat_consume() callback function and calling xdi_diff_outf() like everybody else. A possible output format may look as if we are showing "log --patch" output with a bit more extended diff header lines (e.g. in addition to "rename from", etc., you would have "bytes before" and other new types of headers), but without the actual patch text.