wp_filter_global_styles_post( string $data ): string

2464function wp_filter_global_styles_post( $data ) {2465	$decoded_data        = json_decode( wp_unslash( $data ), true );2466	$json_decoding_error = json_last_error();2467	if (2468		JSON_ERROR_NONE === $json_decoding_error &&2469		is_array( $decoded_data ) &&2470		isset( $decoded_data['isGlobalStylesUserThemeJSON'] ) &&2471		$decoded_data['isGlobalStylesUserThemeJSON']2472	) {2473		unset( $decoded_data['isGlobalStylesUserThemeJSON'] );2474 2475		$data_to_encode = WP_Theme_JSON::remove_insecure_properties( $decoded_data, 'custom' );2476 2477		$data_to_encode['isGlobalStylesUserThemeJSON'] = true;2478		/**2479		 * JSON encode the data stored in post content.2480		 * Escape characters that are likely to be mangled by HTML filters: "<>&".2481		 *2482		 * This matches the escaping in {@see WP_REST_Global_Styles_Controller::prepare_item_for_database()}.2483		 */2484		return wp_slash( wp_json_encode( $data_to_encode, JSON_UNESCAPED_SLASHES | JSON_HEX_TAG | JSON_HEX_AMP ) );2485	}2486	return $data;2487}