tches aggregate values), a bit like <code>getopt(1)</code> does.</p>
</div>
<div class="paragraph">
<p>It takes on the standard input the specification of the options to parse and
understand, and echoes on the standard output a string suitable for <code>sh(1)</code> <code>eval</code>
to replace the arguments with normalized ones.  In case of error, it outputs
usage on the standard error stream, and exits with code 129.</p>
</div>
<div class="paragraph">
<p>Note: Make sure you quote the result when 