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From: Denton Liu <liu.denton@gmail.com>
To: Git Mailing List <git@vger.kernel.org>
Cc: "brian m . carlson" <sandals@crustytoothpaste.net>,
	Eric Sunshine <sunshine@sunshineco.com>,
	Taylor Blau <me@ttaylorr.com>, Junio C Hamano <gitster@pobox.com>,
	Chris Torek <chris.torek@gmail.com>,
	Andreas Schwab <schwab@linux-m68k.org>
Subject: [PATCH v2 3/3] hooks--update.sample: use hash-agnostic zero OID
Date: Wed, 23 Sep 2020 02:38:45 -0700	[thread overview]
Message-ID: <784135549f2fd23a5135cb2b6c2c5ba525885814.1600853895.git.liu.denton@gmail.com> (raw)
In-Reply-To: <cover.1600853895.git.liu.denton@gmail.com>

The update sample hook has the zero OID hardcoded as 40 zeros. However,
with the introduction of SHA-256 support, this assumption no longer
holds true. Replace the hardcoded $z40 with a call to

	git hash-object --stdin </dev/null | tr '[0-9a-f]' '0'

so the sample hook becomes hash-agnostic.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
---
 templates/hooks--update.sample | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/templates/hooks--update.sample b/templates/hooks--update.sample
index 5014c4b31c..c4d426bc6e 100755
--- a/templates/hooks--update.sample
+++ b/templates/hooks--update.sample
@@ -60,7 +60,7 @@ esac
 
 # --- Check types
 # if $newrev is 0000...0000, it's a commit to delete a ref.
-zero="0000000000000000000000000000000000000000"
+zero=$(git hash-object --stdin </dev/null | tr '[0-9a-f]' '0')
 if [ "$newrev" = "$zero" ]; then
 	newrev_type=delete
 else
-- 
2.28.0.760.g8d73e04208


  parent reply	other threads:[~2020-09-23  9:39 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-18 11:19 [PATCH 0/4] sample hooks: become hash agnostic Denton Liu
2020-09-18 11:19 ` [PATCH 1/4] hooks--pre-push.sample: prefer $() for command substitution Denton Liu
2020-09-18 16:57   ` Eric Sunshine
2020-09-18 11:19 ` [PATCH 2/4] builtin/rev-parse: learn --null-oid Denton Liu
2020-09-18 14:11   ` Taylor Blau
2020-09-18 14:16     ` Taylor Blau
2020-09-18 18:16       ` Junio C Hamano
2020-09-18 18:21         ` Taylor Blau
2020-09-18 21:26     ` brian m. carlson
2020-09-20  4:25       ` Chris Torek
2020-09-20 18:58         ` brian m. carlson
2020-09-20 15:35       ` Taylor Blau
2020-09-20 16:03       ` Andreas Schwab
2020-09-18 11:19 ` [PATCH 3/4] hooks--pre-push.sample: use hash-agnostic null OID Denton Liu
2020-09-18 17:06   ` Eric Sunshine
2020-09-18 11:19 ` [PATCH 4/4] hooks--update.sample: " Denton Liu
2020-09-18 17:08   ` Eric Sunshine
2020-09-18 21:35 ` [PATCH 0/4] sample hooks: become hash agnostic brian m. carlson
2020-09-23  9:38 ` [PATCH v2 0/3] " Denton Liu
2020-09-23  9:38   ` [PATCH v2 1/3] hooks--pre-push.sample: modernize script Denton Liu
2020-09-23  9:38   ` [PATCH v2 2/3] hooks--pre-push.sample: use hash-agnostic zero OID Denton Liu
2020-09-23  9:38   ` Denton Liu [this message]
2020-09-23 16:34   ` [PATCH v2 0/3] sample hooks: become hash agnostic Junio C Hamano

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