sed to perform repository validity checks, auto-display
differences from the previous HEAD if different, or set working dir metadata
properties.</p>
</div>
</div>
<div class="sect2">
<h3 id="_post_merge">post-merge</h3>
<div class="paragraph">
<p>This hook is invoked by <a href="git-merge.html">git-merge(1)</a>, which happens when a <code>git pull</code>
is done on a local repository.  The hook takes a single parameter, a status
flag specifying whether or not the merge being done was a squash merge.
This ho