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From: Junio C Hamano <gitster@pobox.com>
To: Patrick Steinhardt <ps@pks.im>
Cc: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>, git@vger.kernel.org
Subject: Re: [PATCH 2/2] config: allow specifying config entries via envvar pairs
Date: Mon, 16 Nov 2020 23:06:17 -0800
Message-ID: <xmqq4klo7992.fsf@gitster.c.googlers.com> (raw)
In-Reply-To: <X7NtovvfE7IjWzie@ncase> (Patrick Steinhardt's message of "Tue, 17 Nov 2020 07:28:50 +0100")

Patrick Steinhardt <ps@pks.im> writes:

>> I especially do not think we want to read from unbounded number of
>> GIT_CONFIG_KEY_<N> variables like this patch does.  How would a
>> script cleanse its environment to protect itself from stray such
>> environment variable pair?  Count up from 1 to forever?  Run "env"
>> and grep for "GIT_CONFIG_KEY_[0-9]*=" (the answer is No.  What if
>> some environment variables have newline in its values?)
>
> You only have to unset `GIT_CONFIG_KEY_1` as the parser will stop
> iterating on the first missing key. More generally, if you set `n` keys,
> it's sufficient to unset key `n+1`.

Yes, but those who want to set N keys would likely to be content
with setting 1..N and happily forget unsetting N+1, and that is
where "how would one cleanse the environment to give a clean slate?"
comes from.

  reply	other threads:[~2020-11-17  7:07 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-13 12:16 [PATCH 0/2] " Patrick Steinhardt
2020-11-13 12:16 ` [PATCH 1/2] config: extract function to parse config pairs Patrick Steinhardt
2020-11-13 12:16 ` [PATCH 2/2] config: allow specifying config entries via envvar pairs Patrick Steinhardt
2020-11-13 13:04   ` Ævar Arnfjörð Bjarmason
2020-11-16 19:39     ` Junio C Hamano
2020-11-17  2:34       ` Jeff King
2020-11-17  6:37         ` Patrick Steinhardt
2020-11-17  7:01           ` Jeff King
2020-11-17 14:22         ` Ævar Arnfjörð Bjarmason
2020-11-17 23:57           ` Jeff King
2020-11-18 13:44             ` Ævar Arnfjörð Bjarmason
2020-11-18  0:50         ` brian m. carlson
2020-11-18  1:59           ` Jeff King
2020-11-18  2:25             ` brian m. carlson
2020-11-18  7:04               ` Patrick Steinhardt
2020-11-19  2:11                 ` brian m. carlson
2020-11-19  6:37                   ` Patrick Steinhardt
2020-11-18  5:44           ` Junio C Hamano
2020-11-17  6:28       ` Patrick Steinhardt
2020-11-17  7:06         ` Junio C Hamano [this message]
2020-11-18 13:49           ` Ævar Arnfjörð Bjarmason
2020-11-18 13:56             ` Patrick Steinhardt
2020-11-18 16:01             ` Junio C Hamano
2020-11-17 14:03       ` Ævar Arnfjörð Bjarmason
2020-11-13 16:37   ` Philip Oakley
2020-11-17  6:40     ` Patrick Steinhardt
2020-11-13 13:11 ` [PATCH 0/2] " Ævar Arnfjörð Bjarmason

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