From: Junio C Hamano <gitster@pobox.com>
To: Jerry Zhang <jerry@skydio.com>
Cc: git@vger.kernel.org, ross@skydio.com, abe@skydio.com,
brian.kubisiak@skydio.com
Subject: Re: [PATCH V2] git-apply: add --allow-empty flag
Date: Wed, 28 Apr 2021 14:08:06 +0900 [thread overview]
Message-ID: <xmqqmttjate1.fsf@gitster.g> (raw)
In-Reply-To: <20210427194049.14399-1-jerry@skydio.com> (Jerry Zhang's message of "Tue, 27 Apr 2021 12:40:49 -0700")
Jerry Zhang <jerry@skydio.com> writes:
> Some users or scripts will pipe "git diff"
> output to "git apply" when replaying diffs
> or commits. In these cases, they will rely
> on the return value of "git apply" to know
> whether the diff was applied successfully.
>
> However, for empty commits, "git apply" will
> fail. This complicates scripts since they
> have to either buffer the diff and check
> its length, or run diff again with "exit-code",
> essentially doing the diff twice.
>
> Add the "--allow-empty" flag to "git apply"
> which allows it to handle both empty diffs
> and empty commits created by "git format-patch
> --always" by doing nothing and returning 0.
>
> Add tests for both with and without --allow-empty.
>
> Signed-off-by: Jerry Zhang <jerry@skydio.com>
> ---
> This patch applies on top of "git-apply: add --quiet flag".
> The conflict is in Documentation -> Synopsis and is
> trivial to solve.
> V1 -> V2:
> - Moved behavior under a flag
> - Added tests for both cases
When people add a flag (a boolean option), it becomes tempting to
add a corresponding configuration variable.
I wonder it this step should start calling
git apply --no-allow-empty
when "git am" drives it, so that a futre end-user configuration
variable would not break it?
next prev parent reply other threads:[~2021-04-28 5:08 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-27 1:12 [PATCH] git-apply: allow empty patch text Jerry Zhang
2021-04-27 5:46 ` Eric Wong
2021-04-27 6:28 ` Junio C Hamano
2021-04-27 19:40 ` [PATCH V2] git-apply: add --allow-empty flag Jerry Zhang
2021-04-28 5:08 ` Junio C Hamano [this message]
2021-04-28 18:40 ` Jerry Zhang
2021-04-29 0:32 ` Ævar Arnfjörð Bjarmason
2021-12-11 3:13 ` [PATCH V3] " Jerry Zhang
2021-12-11 7:36 ` Bagas Sanjaya
2021-12-13 20:28 ` [PATCH V4] " Jerry Zhang
2021-12-13 21:44 ` Junio C Hamano
2021-12-13 21:52 ` Jerry Zhang
2021-12-13 21:57 ` Junio C Hamano
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