Removing Empty Files
====================

   Sometimes when comparing two directories, the first directory
contains a file that the second directory does not.  If you give `diff'
the `-N' or `--new-file' option, it outputs a diff that deletes the
contents of this file.  By default, `patch' leaves an empty file after
applying such a diff.  The `-E' or `--remove-empty-files' option to
`patch' deletes output files that are empty after applying the diff.