When --batch is passed to git cat-file, the sha1_object_info_extended()
function is used to get information about the objects passed to
git cat-file.

Unfortunately sha1_object_info_extended() doesn't take care of
object replacement properly, so it will often fail with a
message like this:

$ echo a3fb2e1845a1aaf129b7975048973414dc172173 | git cat-file --batch
a3fb2e1845a1aaf129b7975048973414dc172173 commit 231
fatal: object a3fb2e1845a1aaf129b7975048973414dc172173 change size!?

The goal of this patch is to show this breakage.

Signed-off-by: Christian Couder <chrisc...@tuxfamily.org>
 t/t6050-replace.sh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/t/t6050-replace.sh b/t/t6050-replace.sh
index 7d47984..b90dbdc 100755
--- a/t/t6050-replace.sh
+++ b/t/t6050-replace.sh
@@ -276,6 +276,11 @@ test_expect_success '-f option bypasses the type check' '
        git replace -f HEAD^ $BLOB
+test_expect_failure 'git cat-file --batch works on replace objects' '
+       git replace | grep $PARA3 &&
+       echo $PARA3 | git cat-file --batch
 test_expect_success 'replace ref cleanup' '
        test -n "$(git replace)" &&
        git replace -d $(git replace) &&

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