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From:   Junio C Hamano <gitster@pobox.com>
To:     Eric Sunshine <sunshine@sunshineco.com>
Cc:     Michael Brown <michael.brown@discourse.org>,
        Git List <git@vger.kernel.org>
Subject: Re: "git diff-files" command reports differences that don't exist
References: <4210f5f1-dd7e-f425-6ab2-e220a33e82bf@discourse.org>
        <xmqqa6rh9sph.fsf@gitster.c.googlers.com>
        <CAPig+cSRKJUhwMagx_h21pJbBiX9paA5cvDbudDNcRVea6g3Mg@mail.gmail.com>
Date:   Fri, 05 Mar 2021 14:28:30 -0800
In-Reply-To: <CAPig+cSRKJUhwMagx_h21pJbBiX9paA5cvDbudDNcRVea6g3Mg@mail.gmail.com>
        (Eric Sunshine's message of "Fri, 5 Mar 2021 17:18:13 -0500")
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Eric Sunshine <sunshine@sunshineco.com> writes:

> On Fri, Mar 5, 2021 at 4:50 PM Junio C Hamano <gitster@pobox.com> wrote:
>> This is totally expected behaviour.  In general when you are working
>> with plumbing commands like diff-files and diff-index, you are
>> expected to do "update-index --refresh" upfront.
>>
>> A plumbing command "git diff" has an equivalent of "update-index
>> --refresh" built into it, but the plumbing commands are designed
>> to be used in scripts, and in order to allow scripting programmers
>> to avoid making unnecessary "update-index --refresh", e.g.
>
> Did you mean:
>
>     A porcelain command "git diff" has an equivalent...

Yes.