org\parser\driver\Markdown::_doBlockQuotes_callback PHP Метод

    protected function _doBlockQuotes_callback($matches)
    {
        $bq = $matches[1];
        # trim one level of quoting - trim whitespace-only lines
        $bq = preg_replace('/^[ ]*>[ ]?|^[ ]+$/m', '', $bq);
        $bq = $this->runBlockGamut($bq);
        # recurse
        $bq = preg_replace('/^/m', "  ", $bq);
        # These leading spaces cause problem with <pre> content,
        # so we need to fix that:
        $bq = preg_replace_callback('{(\\s*<pre>.+?</pre>)}sx', array(&$this, '_doBlockQuotes_callback2'), $bq);
        return "\n" . $this->hashBlock("<blockquote>\n{$bq}\n</blockquote>") . "\n\n";
    }