Re: [PATCH] diff: Make numstat machine friendly also for renames (and copies)

[Jakub Narebski <jnareb@gmail.com>]

Junio C Hamano wrote:
> Jakub Narebski <jnareb@gmail.com> writes:
> 
> > "git diff --numstat" used the same format as "git diff --stat" for
> > renamed (and copied) files, except that filenames were not shortened
> > when they didn't fit in the column width.  This format is suitable for
> > human consumption, but it cannot be unambiguously parsed.
> 
> Agreed about the (un)parsability, and --numstat is all about parsability
> so I would not object.  A fix is really needed there.
> 
> I do not have time to look at the patch right now, but if the changed
> output is in line with what --name-status would show, that would be
> great.  I'd call that "the format that should have been from day one".
> 
> I.e. no '=>' rename marker, but show two names c-quoted (unless -z is
> used) and separated with inter_name_termination).  IIRC, that is how
> rename/copy is shown with --name-status.

Unfortunately this is not possible, at least if we want to retain
the assertion that -z output looks like normal output, only without
quoting.

diff --name-status has _status_ field which can be used to distinguish
if the NUL (for -z output) is the end of source filename, or the end
of record.

The patch send changes --numstat to use only _destination_ name.
What you want I'd left for futore --numstat-extended (basically --numstat,
but with status field.

-- 
Jakub Narebski
Poland