_get_wptexturize_split_regex( string $shortcode_regex = '' ): string

686function _get_wptexturize_split_regex( $shortcode_regex = '' ) {687	static $html_regex;688 689	if ( ! isset( $html_regex ) ) {690		// phpcs:disable Squiz.Strings.ConcatenationSpacing.PaddingFound -- don't remove regex indentation691		$comment_regex =692			'!'             // Start of comment, after the <.693			. '(?:'         // Unroll the loop: Consume everything until --> is found.694			.     '-(?!->)' // Dash not followed by end of comment.695			.     '[^\-]*+' // Consume non-dashes.696			. ')*+'         // Loop possessively.697			. '(?:-->)?';   // End of comment. If not found, match all input.698 699		$html_regex = // Needs replaced with wp_html_split() per Shortcode API Roadmap.700			'<'                  // Find start of element.701			. '(?(?=!--)'        // Is this a comment?702			.     $comment_regex // Find end of comment.703			. '|'704			.     '[^>]*>?'      // Find end of element. If not found, match all input.705			. ')';706		// phpcs:enable707	}708 709	if ( empty( $shortcode_regex ) ) {710		$regex = '/(' . $html_regex . ')/';711	} else {712		$regex = '/(' . $html_regex . '|' . $shortcode_regex . ')/';713	}714 715	return $regex;716}