grep: enable recurse-submodules to work on <tree> objects

diff --git a/t/t3402-rebase-merge.sh b/t/t3402-rebase-merge.sh
index 8f64505e4f94432de6cc287f4ab2f3129703536a..488945e0071b1ba4ae988848b5cb42df72737d2b 100755 (executable)
--- a/t/t3402-rebase-merge.sh
+++ b/t/t3402-rebase-merge.sh
@@ -85,6 +85,15 @@ test_expect_success 'rebase -Xtheirs' '
        ! grep 11 original
 '
 
+test_expect_success 'rebase -Xtheirs from orphan' '
+       git checkout --orphan orphan-conflicting master~2 &&
+       echo "AB $T" >> original &&
+       git commit -morphan-conflicting original &&
+       git rebase -Xtheirs master &&
+       grep AB original &&
+       ! grep 11 original
+'
+
 test_expect_success 'merge and rebase should match' '
        git diff-tree -r test-rebase test-merge >difference &&
        if test -s difference