test $grandparent = $(git rev-parse HEAD~2)
'
+test_expect_success 'rebase a commit violating pre-commit' '
+
+ mkdir -p .git/hooks &&
+ PRE_COMMIT=.git/hooks/pre-commit &&
+ echo "#!/bin/sh" > $PRE_COMMIT &&
+ echo "test -z \"\$(git diff --cached --check)\"" >> $PRE_COMMIT &&
+ chmod a+x $PRE_COMMIT &&
+ echo "monde! " >> file1 &&
+ test_tick &&
+ ! git commit -m doesnt-verify file1 &&
+ git commit -m doesnt-verify --no-verify file1 &&
+ test_tick &&
+ FAKE_LINES=2 git rebase -i HEAD~2
+
+'
+
+test_expect_success 'rebase with a file named HEAD in worktree' '
+
+ rm -fr .git/hooks &&
+ git reset --hard &&
+ git checkout -b branch3 A &&
+
+ (
+ GIT_AUTHOR_NAME="Squashed Away" &&
+ export GIT_AUTHOR_NAME &&
+ >HEAD &&
+ git add HEAD &&
+ git commit -m "Add head" &&
+ >BODY &&
+ git add BODY &&
+ git commit -m "Add body"
+ ) &&
+
+ FAKE_LINES="1 squash 2" git rebase -i to-be-rebased &&
+ test "$(git show -s --pretty=format:%an)" = "Squashed Away"
+
+'
+
test_done