test $H = $(git rev-parse HEAD)
'
+TRASHDIR=$(pwd)
+test_expect_success 'correct GIT_DIR while using -d' '
+ mkdir drepo &&
+ ( cd drepo &&
+ git init &&
+ test_commit drepo &&
+ git filter-branch -d "$TRASHDIR/dfoo" \
+ --index-filter "cp \"$TRASHDIR\"/dfoo/backup-refs \"$TRASHDIR\"" \
+ ) &&
+ grep drepo "$TRASHDIR/backup-refs"
+'
+
+test_expect_success 'Fail if commit filter fails' '
+ test_must_fail git filter-branch -f --commit-filter "exit 1" HEAD
+'
+
test_expect_success 'rewrite, renaming a specific file' '
git filter-branch -f --tree-filter "mv d doh || :" HEAD
'