Automatic_Upgrader_Skin::feedback( string|array|WP_Error $feedback, mixed $args )

74	public function feedback( $feedback, ...$args ) {75		if ( is_wp_error( $feedback ) ) {76			$string = $feedback->get_error_message();77		} elseif ( is_array( $feedback ) ) {78			return;79		} else {80			$string = $feedback;81		}82 83		if ( ! empty( $this->upgrader->strings[ $string ] ) ) {84			$string = $this->upgrader->strings[ $string ];85		}86 87		if ( str_contains( $string, '%' ) ) {88			if ( ! empty( $args ) ) {89				$string = vsprintf( $string, $args );90			}91		}92 93		$string = trim( $string );94 95		// Only allow basic HTML in the messages, as it'll be used in emails/logs rather than direct browser output.96		$string = wp_kses(97			$string,98			array(99				'a'      => array(100					'href' => true,101				),102				'br'     => true,103				'em'     => true,104				'strong' => true,105			)106		);107 108		if ( empty( $string ) ) {109			return;110		}111 112		$this->messages[] = $string;113	}