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Update shell scripts to compute empty tree object ID

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Several of our shell scripts hard-code the object ID of the empty tree.
To avoid any problems when changing hashes, compute this value on
startup of the script.  For performance, store the value in a variable
and reuse it throughout the life of the script.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
brian m. carlson
2018-05-02 00:26:08 +00:00
committed by Junio C Hamano
parent e1ccd7e2b1
commit 03a7f388da
3 changed files with 7 additions and 3 deletions
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templates/hooks--pre-commit.sample
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@@ -12,7 +12,7 @@ then
against=HEAD
else
# Initial commit: diff against an empty tree object
against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
against=$(git hash-object -t tree /dev/null)
fi
# If you want to allow non-ASCII filenames set this variable to true.