return exp, fmt.Errorf("bad header line for FAILURE: %q", s.Text())
			}
			matcher, err := parseMatcher(c[1])
			if err != nil {
				return exp, err
			}
			exp.errorMatcher = matcher
		default:
			return exp, fmt.Errorf("bad header line: %q", s.Text())
		}
		return exp, nil
	}
	return exp, s.Err()
}

func parseMatcher(quoted string) (*regexp.Regexp, error) {
	pattern, err := strconv.Unquote(quoted)
	if err != nil {