xpressengine / xe-core

        /* A character token that is one of one of U+0009 CHARACTER TABULATION,

        U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),

        or U+0020 SPACE */

        } elseif(isset($token['data']) && preg_match('/^[\t\n\x0b\x0c ]+$/',

        $token['data'])) {

            /* Append that character  to the Document node. */

            $text = $this->dom->createTextNode($token['data']);

            $this->dom->appendChild($text);

        }

    }

    private function rootElementPhase($token) {

        /* A character token that is one of one of U+0009 CHARACTER TABULATION,

        U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),

        or U+0020 SPACE */

        } elseif($token['type'] === HTML5::CHARACTR &&

        preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {

            /* Append that character  to the Document node. */

            $text = $this->dom->createTextNode($token['data']);

            $this->dom->appendChild($text);

        /* A character token that is not one of U+0009 CHARACTER TABULATION,

            U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED

            (FF), or U+0020 SPACE

        A start tag token

        An end tag token

        An end-of-file token */

        } elseif(($token['type'] === HTML5::CHARACTR &&

        !preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) ||

        $token['type'] === HTML5::STARTTAG ||

        $token['type'] === HTML5::ENDTAG ||