On Sun, Jul 07, 2013 at 10:49:46AM -0700, Junio C Hamano wrote:

> Jeff King <p...@peff.net> writes:
> > Perhaps we need
> >
> >   git cat-file --batch-format="%(disk-size) %(object)"
> >
> > or similar.
> I agree with your reasoning.  It may be simpler to give an interface
> to ask for which pieces of info, e.g. --batch-cols=size,disksize,
> without giving the readers a flexible "format".

I started on this, and it turned out not to really be any simpler. In
particular there is the question of whether

  git cat-file --batch-cols=size,type

is different from

  git cat-file --batch-cols=type,size

If so, then you are basically implementing the equivalent of a macro
format anyway (you have to parse it left to right to know the order).
And if not, you end up translating the column list into a bit-field, and
the boilerplate for adding a new item is about the same as for a macro

So I went ahead with the full formats for my re-roll. It turned out
pretty reasonable, I think.

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