code: func validEncodedPath(s string) bool {
  	for i := 0; i < len(s); i++ {
  		// RFC 3986, Appendix A.
  		// pchar = unreserved / pct-encoded / sub-delims / ":" / "@".
  		// shouldEscape is not quite compliant with the RFC,
  		// so we check the sub-delims ourselves and let
  		// shouldEscape handle the others.
  		switch s[i] {
  		case '!', '$', '&', '\'', '(', ')', '*', '+', ',', ';', '=', ':', '@':
  			// ok
  		case '[', ']':
  			// ok - not specified in RFC 3986 but left alone by modern browsers
  		case '%':
  			// ok - percent encoded, will decode
  		default:
  			if shouldEscape(s[i], encodePath) {
  				return false
  			}
  		}
  	}
  	return true
  }
docs: // From https://github.com/golang/go/blob/31d19c0ba34782d16b91e9d41aa88147e858bb34/src/net/url/url.go#L710
  // validEncodedPath reports whether s is a valid encoded path.
  // It must not contain any bytes that require escaping during path encoding.