code>ATTR</code> be set.</p>
</li>
<li>
<p>"<code>-ATTR</code>" requires that the attribute <code>ATTR</code> be unset.</p>
</li>
<li>
<p>"<code>ATTR=VALUE</code>" requires that the attribute <code>ATTR</code> be
set to the string <code>VALUE</code>.</p>
</li>
<li>
<p>"<code>!ATTR</code>" requires that the attribute <code>ATTR</code> be
unspecified.</p>
<div class="paragraph">
<p>Note that when matching against a tree object, attributes are still
obtained from working tree, not from the given tree object.</