n text files, such as NUL.</p>
</dd>
<dt class="hdlist1">Unset</dt>
<dd>
<p>A path to which the <code>diff</code> attribute is unset will
generate <code>Binary files differ</code> (or a binary patch, if
binary patches are enabled).</p>
</dd>
<dt class="hdlist1">Unspecified</dt>
<dd>
<p>A path to which the <code>diff</code> attribute is unspecified
first gets its contents inspected, and if it looks like
text and is smaller than core.bigFileThreshold, it is treated
as text. Otherwise it would gen