Re: [PATCH v2 0/2] [GSOC] ref-filter: add %(raw) atom

No need to resend as it's a cover letter, but just in case there is
another round and you copy things from this cover letter:

On Fri, Jun 4, 2021 at 2:12 PM ZheNing Hu via GitGitGadget
[off-list ref] wrote:

In order to make git cat-file --batch use ref-filter logic, %(raw) atom is
adding to ref-filter.

s/adding/added/

Change from last version:

 1. Change --<lang> and --format=%(raw) checkpoint to verify_ref_format(),
    which make it more scalable.

s/make/makes/

 2. Change grab_sub_body_contents() use struct expand_data *data instread of

s/use/to use/
s/instread/instead/

    using obj,buf,buf_size to pass object info which can reduce the delivery
    of function parameters.