test_cmp important c1.c
'
+test_expect_failure 'will not overwrite unstaged changes in renamed file' '
+ git reset --hard c1 &&
+ git mv c1.c other.c &&
+ git commit -m rename &&
+ cp important other.c &&
+ git merge c1a &&
+ test_cmp important other.c
+'
+
test_expect_success 'will not overwrite untracked subtree' '
git reset --hard c0 &&
rm -rf sub &&