From: Denton Liu <liu.denton@gmail.com>
Date: Wed, 23 Sep 2020 09:38:45 +0000 (-0700)
Subject: hooks--update.sample: use hash-agnostic zero OID
X-Git-Tag: v2.29.0-rc0~36^2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d8d3d632f4165955da49032d50279c20cfbde2e5;p=thirdparty%2Fgit.git

hooks--update.sample: use hash-agnostic zero OID

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>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---

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