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From:   Junio C Hamano <gitster@pobox.com>
To:     =?utf-8?B?w4Z2YXIgQXJuZmrDtnLDsA==?= Bjarmason <avarab@gmail.com>
Cc:     git@vger.kernel.org,
        =?utf-8?B?Tmd1eeG7hW4gVGjDoWkgTmfhu41j?= Duy <pclouds@gmail.com>
Subject: Re: [PATCH 0/2] update-index doc: note new caveats in 2.17
References: <xmqq6076xabo.fsf@gitster-ct.c.googlers.com>
        <20180209210431.409-1-avarab@gmail.com>
Date:   Fri, 09 Feb 2018 13:40:05 -0800
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        Bjarmason"'s message of "Fri, 9 Feb 2018 21:04:29 +0000")
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Ævar Arnfjörð Bjarmason  <avarab@gmail.com> writes:

> When users upgrade to 2.17 they're going to have git yelling at them
> (as my users did) on existing checkouts, with no indication whatsoever
> that it's due to the UC or how to fix it.

Wait.  Are you saying that the new warning is "warning" against a
condition that is not an error?

> ... doesn't it only warn under that mode? I.e.:
>
>     -"could not open directory '%s'")
>     +"core.untrackedCache: could not open directory '%s'")

For example, if it attempts to open a directory which does *not*
have to exist, and sees an error from opendir() due to ENOENT, then
I do not think it should be giving a warning.  If we positively know
that a directory should exist there and we cannot open it, of course
we should warn.  Also, if we know a directory should be readable
when it exists, then we should be warning when we see an error other
than ENOENT.

So...