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

>
> From: ZheNing Hu <adlternative@gmail.com>
>
> Add new formatting option `%(raw)`, which will print the raw
> object data without any changes. It will help further to migrate
> all cat-file formatting logic from cat-file to ref-filter.
>
> The raw data of blob, tree objects may contain '\0', but most of
> the logic in `ref-filter` depands on the output of the atom being

> diff --git a/Documentation/git-for-each-ref.txt b/Documentation/git-for-each-ref.txt
> index 2ae2478de706..8f8d8cd1e04f 100644
> --- a/Documentation/git-for-each-ref.txt
> +++ b/Documentation/git-for-each-ref.txt
> @@ -235,6 +235,15 @@ and `date` to extract the named component.  For email fields (`authoremail`,
>  without angle brackets, and `:localpart` to get the part before the `@` symbol
>  out of the trimmed email.
>
> +The raw data in a object is `raw`.

> +
> +raw:size::
> +       The raw data size of the object.
> +
> +Note that `--format=%(raw)` can not be used with `--python`, `--shell`, `--tcl`,
> +`--perl` because the host language may not support arbitrary binary data in the
> +variables of its string type.

> @@ -1765,7 +1815,7 @@ static int populate_value(struct ref_array_item *ref, struct strbuf *err)
>                 int deref = 0;
>                 const char *refname;
>                 struct branch *branch = NULL;
> -
> +               v->s_size = ATOM_VALUE_S_SIZE_INIT;