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From:   Junio C Hamano <gitster@pobox.com>
To:     ZheNing Hu <adlternative@gmail.com>
Cc:     ZheNing Hu via GitGitGadget <gitgitgadget@gmail.com>,
        Git List <git@vger.kernel.org>,
        Christian Couder <christian.couder@gmail.com>,
        =?utf-8?B?w4Z2YXIgQXJuZmrDtnLDsA==?= Bjarmason <avarab@gmail.com>
Subject: Re: [PATCH v2] ls-files.c: add --object-only option
References: <pull.1250.git.1654509678718.gitgitgadget@gmail.com>
        <pull.1250.v2.git.1654778272871.gitgitgadget@gmail.com>
        <xmqq35gdk44i.fsf@gitster.g>
        <CAOLTT8SNOYYVmk3fvEc=Vp9MuRp+1H--wh72rP=ORRtffonUfQ@mail.gmail.com>
Date:   Mon, 13 Jun 2022 10:19:12 -0700
In-Reply-To: <CAOLTT8SNOYYVmk3fvEc=Vp9MuRp+1H--wh72rP=ORRtffonUfQ@mail.gmail.com>
        (ZheNing Hu's message of "Sun, 12 Jun 2022 18:24:26 +0800")
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ZheNing Hu <adlternative@gmail.com> writes:

> I think those atoms are undoubtedly necessary to keep
>
> %(tag)
> %(objectmode)
> %(objectname)
> %(stage)
> %(path)

I am not sure what you mean by "keep".  You cannot keep what you do
not have yet ;-)

If ls-files needs (that is a big if; it is a plumbing to be used by
whatever program that want to assemble the pieces, and it shouldn't
have to learn such assembly itself) to support "--format", so that
people can reinvent its "-s" output (but why?  There already is "-s"
output available), then the above would be necessary (assuming that
via the "--format" the user will be able to supply inter-field
spaces and tabs properly).  I do not know if there are other things
available in output other than the "-s" option produces offhand, but
if there are, they would need to be added for completeness.