class="paragraph">
<p>&lt;start&gt; and &lt;end&gt; can take one of these forms:</p>
</div>
<div class="ulist">
<ul>
<li>
<p>number</p>
<div class="paragraph">
<p>If &lt;start&gt; or &lt;end&gt; is a number, it specifies an
absolute line number (lines count from 1).</p>
</div>
</li>
<li>
<p>/regex/</p>
<div class="paragraph">
<p>This form will use the first line matching the given
POSIX regex. If &lt;start&gt; is a regex, it will search from the end of
the previous <code>-L</code> range, if any, otherwise f