Re: [PATCH v14 07/13] ref-filter: add support for %(contents:lines=X)

> In 'tag.c' we can print N lines from the annotation of the tag using
> the '-n<num>' option. Copy code from 'tag.c' to 'ref-filter' and
> modify it to support appending of N lines from the annotation of tags
> to the given strbuf.
>
> Implement %(contents:lines=X) where X lines of the given object are
> obtained.
>
> Add documentation and test for the same.
>
> Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
> ---
> @@ -608,6 +672,15 @@ static void grab_sub_body_contents(struct atom_value *val, int deref, struct obj
>                         v->s = xmemdupz(sigpos, siglen);
>                 else if (!strcmp(name, "contents"))
>                         v->s = xstrdup(subpos);
> +               else if (skip_prefix(name, "contents:lines=", &valp)) {
> +                       struct contents *contents = xmalloc(sizeof(struct contents));
> +
> +                       if (strtoul_ui(valp, 10, &contents->lines))
> +                               die(_("positive width expected align:%s"), valp);

> +                       hashcpy(contents->oid.hash, obj->sha1);
> +                       v->handler = contents_lines_handler;
> +                       v->contents = contents;
> +               }
>         }
>  }