WP_HTML_Processor::is_special( WP_HTML_Token|string $tag_name ): bool

Source

public static function is_special( $tag_name ): bool {
	if ( is_string( $tag_name ) ) {
		$tag_name = strtoupper( $tag_name );
	} else {
		$tag_name = 'html' === $tag_name->namespace
			? strtoupper( $tag_name->node_name )
			: "{$tag_name->namespace} {$tag_name->node_name}";
	}

	return (
		'ADDRESS' === $tag_name ||
		'APPLET' === $tag_name ||
		'AREA' === $tag_name ||
		'ARTICLE' === $tag_name ||
		'ASIDE' === $tag_name ||
		'BASE' === $tag_name ||
		'BASEFONT' === $tag_name ||
		'BGSOUND' === $tag_name ||
		'BLOCKQUOTE' === $tag_name ||
		'BODY' === $tag_name ||
		'BR' === $tag_name ||
		'BUTTON' === $tag_name ||
		'CAPTION' === $tag_name ||
		'CENTER' === $tag_name ||
		'COL' === $tag_name ||
		'COLGROUP' === $tag_name ||
		'DD' === $tag_name ||
		'DETAILS' === $tag_name ||
		'DIR' === $tag_name ||
		'DIV' === $tag_name ||
		'DL' === $tag_name ||
		'DT' === $tag_name ||
		'EMBED' === $tag_name ||
		'FIELDSET' === $tag_name ||
		'FIGCAPTION' === $tag_name ||
		'FIGURE' === $tag_name ||
		'FOOTER' === $tag_name ||
		'FORM' === $tag_name ||
		'FRAME' === $tag_name ||
		'FRAMESET' === $tag_name ||
		'H1' === $tag_name ||
		'H2' === $tag_name ||
		'H3' === $tag_name ||
		'H4' === $tag_name ||
		'H5' === $tag_name ||
		'H6' === $tag_name ||
		'HEAD' === $tag_name ||
		'HEADER' === $tag_name ||
		'HGROUP' === $tag_name ||
		'HR' === $tag_name ||
		'HTML' === $tag_name ||
		'IFRAME' === $tag_name ||
		'IMG' === $tag_name ||
		'INPUT' === $tag_name ||
		'KEYGEN' === $tag_name ||
		'LI' === $tag_name ||
		'LINK' === $tag_name ||
		'LISTING' === $tag_name ||
		'MAIN' === $tag_name ||
		'MARQUEE' === $tag_name ||
		'MENU' === $tag_name ||
		'META' === $tag_name ||
		'NAV' === $tag_name ||
		'NOEMBED' === $tag_name ||
		'NOFRAMES' === $tag_name ||
		'NOSCRIPT' === $tag_name ||
		'OBJECT' === $tag_name ||
		'OL' === $tag_name ||
		'P' === $tag_name ||
		'PARAM' === $tag_name ||
		'PLAINTEXT' === $tag_name ||
		'PRE' === $tag_name ||
		'SCRIPT' === $tag_name ||
		'SEARCH' === $tag_name ||
		'SECTION' === $tag_name ||
		'SELECT' === $tag_name ||
		'SOURCE' === $tag_name ||
		'STYLE' === $tag_name ||
		'SUMMARY' === $tag_name ||
		'TABLE' === $tag_name ||
		'TBODY' === $tag_name ||
		'TD' === $tag_name ||
		'TEMPLATE' === $tag_name ||
		'TEXTAREA' === $tag_name ||
		'TFOOT' === $tag_name ||
		'TH' === $tag_name ||
		'THEAD' === $tag_name ||
		'TITLE' === $tag_name ||
		'TR' === $tag_name ||
		'TRACK' === $tag_name ||
		'UL' === $tag_name ||
		'WBR' === $tag_name ||
		'XMP' === $tag_name ||

		// MathML.
		'math MI' === $tag_name ||
		'math MO' === $tag_name ||
		'math MN' === $tag_name ||
		'math MS' === $tag_name ||
		'math MTEXT' === $tag_name ||
		'math ANNOTATION-XML' === $tag_name ||

		// SVG.
		'svg DESC' === $tag_name ||
		'svg FOREIGNOBJECT' === $tag_name ||
		'svg TITLE' === $tag_name
	);
}

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