 when you need to
pass the command-line option to another command. Any previous value
will be overwritten, so this should only be used for options where
the last one specified on the command line wins.</p>
</dd>
<dt class="hdlist1"><code>OPT_PASSTHRU_ARGV(short, long, &amp;argv_array_var, arg_str, description, flags)</code></dt>
<dd>
<p>Introduce an option where all instances of it on the command-line will
be reconstructed into an argv_array. This is useful when you need to
pass the command-line option, whi