 to stdout the new token followed
by a NUL before the list of files.</p>
</div>
<div class="paragraph">
<p>The hook should output to stdout the list of all files in the working
directory that may have changed since the requested time.  The logic
should be inclusive so that it does not miss any potential changes.
The paths should be relative to the root of the working directory
and be separated by a single NUL.</p>
</div>
<div class="paragraph">
<p>It is OK to include files which have not actually changed.  