Examines paths in the working tree that has changes unrecorded
to the index file, and changes between the index file and the
current HEAD commit. The former paths are what you _could_
-commit by running 'git-update-index' before running 'git
+commit by running 'git add' (or 'git rm' if you are deleting) before running 'git
commit', and the latter paths are what you _would_ commit by
running 'git commit'.