}
	if len(x) > len(y) {
		return +1
	}
	if x < y {
		return -1
	} else {
		return +1
	}
}

// DecInt returns the decimal string decremented by 1, or the empty string
// if the decimal is all zeroes.
// (Copied from golang.org/x/mod/module's decDecimal.)
func DecInt(decimal string) string {
	// Scan right to left turning 0s to 9s until you find a digit to decrement.
	digits := []byte(decimal)

//
// Examples:
//
//	Prev("1.2") = "1.1"
//	Prev("1.3rc4") = "1.2"
func Prev(x string) string {
	v := gover.Parse(x)
	if gover.CmpInt(v.Minor, "1") <= 0 {
		return v.Major
	}
	return v.Major + "." + gover.DecInt(v.Minor)
}

// IsValid reports whether the version x is valid.
func IsValid(x string) bool {
	return gover.IsValid(x)