# Match the index to the working tree, and do a three-way.
git diff-files --name-only | git update-index --remove --stdin &&
work=`git write-tree` &&
- git read-tree --reset $new &&
- git checkout-index -f -u -q -a &&
+ git read-tree --reset -u $new &&
git read-tree -m -u --aggressive $old $new $work || exit
if result=`git write-tree 2>/dev/null`