! test -d .git/rebase-merge
'
+test_expect_success 'abort with error when new base cannot be checked out' '
+ git rm --cached file1 &&
+ git commit -m "remove file in base" &&
+ test_must_fail git rebase -i master > output 2>&1 &&
+ grep "Untracked working tree file .file1. would be overwritten" \
+ output &&
+ ! test -d .git/rebase-merge &&
+ git reset --hard HEAD^
+'
+
test_expect_success 'retain authorship' '
echo A > file7 &&
git add file7 &&