Re: [WIP/PATCH v4 6/8] for-each-ref: rename some functions and make them public

> This is a preparatory step for moving code from 'for-each-ref'
> to 'ref-filter' to make meaningful, targeted services available to
> other commands via public APIs.
>
> Based-on-patch-by: Jeff King <peff@peff.net>
> Mentored-by: Christian Couder <christian.couder@gmail.com>
> Mentored-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
> Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
> ---
> diff --git a/builtin/for-each-ref.c b/builtin/for-each-ref.c
> index f896e1c..8fed04b 100644
> --- a/builtin/for-each-ref.c
> +++ b/builtin/for-each-ref.c
> @@ -882,10 +882,10 @@ static struct ref_array_item *new_ref_array_item(const char *refname,
>  }
>
>  /*
> - * A call-back given to for_each_ref().  Filter refs and keep them for
> + * A call-back given to for_each_ref(). Filter refs and keep them for

>   * later object processing.
>   */
> -static int grab_single_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
> +int ref_filter_handler(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
>  {
>         struct ref_filter_cbdata *ref_cbdata = cb_data;
>         struct ref_filter *filter = &ref_cbdata->filter;