Hi Kokisan,
There is no config variable to set a header but its really easy to edit the script to do it. open plugins/sueverules/rcube_sieve_script.php, find this at the end of the as_text function:
// requires
$exts = array_unique($exts);
if (sizeof($exts))
$script = 'require ["' . implode('","', $exts) . "\"];\n" . $script;
return $script;
change it to something like:
// requires
$exts = array_unique($exts);
if (sizeof($exts))
$script = 'require ["' . implode('","', $exts) . "\"];\n" . $script;
return "# Sieve filter\n" . $script;