func reSubMatchMap(r *regexp.Regexp, str string) map[string]string {
	match := r.FindStringSubmatch(str)
	if match == nil {
		return nil
	}
	subMatchMap := make(map[string]string)
	for i, name := range r.SubexpNames() {
		if i != 0 {
			subMatchMap[name] = match[i]
		}
	}
	return subMatchMap
}

func isValidCGroupPathMatches(matches map[string]string) bool {
	if matches == nil {
		return false
	}

pkg regexp, method (*Regexp) ReplaceAllString(string, string) string
pkg regexp, method (*Regexp) ReplaceAllStringFunc(string, func(string) string) string
pkg regexp, method (*Regexp) String() string
pkg regexp, method (*Regexp) SubexpNames() []string
pkg regexp, type Regexp struct
pkg regexp/syntax, const ClassNL Flags
pkg regexp/syntax, const DotNL Flags
pkg regexp/syntax, const EmptyBeginLine EmptyOp
pkg regexp/syntax, const EmptyBeginText EmptyOp