From: Denton Liu <liu.denton@gmail.com>
Date: Wed, 23 Sep 2020 09:38:44 +0000 (-0700)
Subject: hooks--pre-push.sample: use hash-agnostic zero OID
X-Git-Tag: v2.29.0-rc0~36^2~1
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=8c7e5059506c6840bfbd4dd8d1730784a5689719;p=thirdparty%2Fgit.git

hooks--pre-push.sample: use hash-agnostic zero OID

The pre-push 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--pre-push.sample b/templates/hooks--pre-push.sample
index d0f30190ac..4ce688d32b 100755
--- a/templates/hooks--pre-push.sample
+++ b/templates/hooks--pre-push.sample
@@ -22,16 +22,16 @@
 remote="$1"
 url="$2"
 
-z40=0000000000000000000000000000000000000000
+zero=$(git hash-object --stdin </dev/null | tr '[0-9a-f]' '0')
 
 while read local_ref local_oid remote_ref remote_oid
 do
-	if test "$local_oid" = $z40
+	if test "$local_oid" = "$zero"
 	then
 		# Handle delete
 		:
 	else
-		if test "$remote_oid" = $z40
+		if test "$remote_oid" = "$zero"
 		then
 			# New branch, examine all commits
 			range="$local_oid"