args.RecordDelimiter = s
			case "FieldDelimiter":
				args.FieldDelimiter = s
			case "QuoteCharacter":
				switch utf8.RuneCountInString(s) {
				case 0:
					args.QuoteCharacter = "\x00"
				case 1:
					args.QuoteCharacter = s
				default:
					return fmt.Errorf("unsupported QuoteCharacter '%v'", s)
				}
			case "QuoteEscapeCharacter":
				switch utf8.RuneCountInString(s) {
				case 0: