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<?php
function build_post_subject($listtag, $forumtag, $subject, $reply) {
// strip the '[list]' and '[forum]' tags
$tagpat = '/(' . preg_quote($listtag, '/') .
'|' . preg_quote($forumtag, '/') . ')\\s*/';
$subject = preg_replace($tagpat, '', $subject);
// strip leading sequences of Re-equivalents and Edit
$re = '/^(?:(?:RE|AW|SV|VS|EDIT)(?:\\[\\d+\\])?:\\s*)+/i';
if (preg_match($re, $subject, $m)) {
$subject = substr($subject, strlen($m[0]));
}
// ensure nonempty subject
$subject = trim($subject);
if ($subject == '') {
$subject = '(no subject)';
}
if ($reply) {
$subject = 'Re: ' . $subject;
}
return $subject;
}
?>
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