func (r *Request) PathValue(name string) string {
	if i := r.patIndex(name); i >= 0 {
		return r.matches[i]
	}
	return r.otherValues[name]
}

// SetPathValue sets name to value, so that subsequent calls to r.PathValue(name)
// return value.
func (r *Request) SetPathValue(name, value string) {
	if i := r.patIndex(name); i >= 0 {
		r.matches[i] = value
	} else {
		if r.otherValues == nil {