WP_HTML_Processor::seek( string $bookmark_name ): bool

Source

 *
 * @since 6.7.0 Stub implementation.
 *
 * @throws WP_HTML_Unsupported_Exception When encountering unsupported HTML input.
 *
 * @see https://html.spec.whatwg.org/#the-after-head-insertion-mode
 * @see WP_HTML_Processor::step
 *
 * @return bool Whether an element was found.
 */
private function step_after_head(): bool {
	$token_name = $this->get_token_name();
	$token_type = $this->get_token_type();
	$is_closer  = parent::is_tag_closer();
	$op_sigil   = '#tag' === $token_type ? ( $is_closer ? '-' : '+' ) : '';
	$op         = "{$op_sigil}{$token_name}";

	switch ( $op ) {
		/*
		 * > A character token that is one of U+0009 CHARACTER TABULATION,
		 * > U+000A LINE FEED (LF), U+000C FORM FEED (FF),
		 * > U+000D CARRIAGE RETURN (CR), or U+0020 SPACE
		 */
		case '#text':
			if ( parent::TEXT_IS_WHITESPACE === $this->text_node_classification ) {
				// Insert the character.
				$this->insert_html_element( $this->state->current_token );
				return true;
			}
			goto after_head_anything_else;
			break;

		/*
		 * > A comment token
		 */
		case '#comment':
		case '#funky-comment':
		case '#presumptuous-tag':
			$this->insert_html_element( $this->state->current_token );
			return true;

		/*
		 * > A DOCTYPE token
		 */
		case 'html':
			// Parse error: ignore the token.
			return $this->step();

		/*
		 * > A start tag whose tag name is "html"
		 */
		case '+HTML':
			return $this->step_in_body();

		/*
		 * > A start tag whose tag name is "body"
		 */
		case '+BODY':
			$this->insert_html_element( $this->state->current_token );
			$this->state->frameset_ok    = false;
			$this->state->insertion_mode = WP_HTML_Processor_State::INSERTION_MODE_IN_BODY;
			return true;

		/*
		 * > A start tag whose tag name is "frameset"
		 */
		case '+FRAMESET':
			$this->insert_html_element( $this->state->current_token );
			$this->state->insertion_mode = WP_HTML_Processor_State::INSERTION_MODE_IN_FRAMESET;
			return true;

		/*
		 * > A start tag whose tag name is one of: "base", "basefont", "bgsound",
		 * > "link", "meta", "noframes", "script", "style", "template", "title"
		 *
		 * Anything here is a parse error.
		 */
		case '+BASE':
		case '+BASEFONT':
		case '+BGSOUND':
		case '+LINK':
		case '+META':
		case '+NOFRAMES':
		case '+SCRIPT':
		case '+STYLE':

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