rate form.
<code>--option=Arg</code> is stuck, <code>--option Arg</code> is separate form.</p>
</li>
<li>
<p>Long options may be <em>abbreviated</em>, as long as the abbreviation
is unambiguous.</p>
</li>
<li>
<p>Short options may be bundled, e.g. <code>-a -b</code> can be specified as <code>-ab</code>.</p>
</li>
<li>
<p>Boolean long options can be <em>negated</em> (or <em>unset</em>) by prepending
<code>no-</code>, e.g. <code>--no-abbrev</code> instead of <code>--abbrev</code>. Conversely,
options that beg