RE: [PATCH 0/2] [GSOC] ref-filter: add %(raw) atom

> In order to make git cat-file --batch use ref-filter logic, I add %(raw)
> atom to ref-filter.
> 
> Change from last version:
> 
>  1. In my discussion with Junio, I came to the conclusion that
>     --format="%(raw)" should not be used with --python, --perl, --shell,
>     --tcl. Therefore, die if both --format="%(raw)" and
> 
> --language are given in parse_ref_filter_atom(). The reason I don't move
> this part to raw_atom_parser() is if I move it to raw_atom_parser(), when we
> use:
> 
> git --format=%raw --sort=raw --python`