what is $0 and %0 in lighttpd configuration?
<p>so in this doc,
<a href="https://redmine.lighttpd.net/projects/lighttpd/wiki/HowToRedirectHttpToHttps" rel="nofollow">https://redmine.lighttpd.net/projects/lighttpd/wiki/HowToRedirectHttpToHttps</a></p>

<pre><code>$HTTP["scheme"] == "http" {
    # capture vhost name with regex conditiona -&gt; %0 in redirect pattern
    # must be the most inner block to the redirect rule
    $HTTP["host"] =~ ".*" {
        url.redirect = (".*" =&gt; "https://%0$0")
    }
}
</code></pre>

<p><a href="http://1.2.3.4/dir/" rel="nofollow">http://1.2.3.4/dir/</a>
what is %0 and what is $0 please ? </p>

<p>Thanks !</p>