for (String ipString : ipStrings) {
      for (String scopeId : getMachineScopesAndInterfaces()) {
        String withScopeId = ipString + "%" + scopeId;
        assertTrue(
            "InetAddresses.isInetAddress(" + withScopeId + ") should be true but was false",
            InetAddresses.isInetAddress(withScopeId));
        Inet6Address parsed;
        boolean isNumeric = scopeId.matches("\\d+");
        try {

type Mark struct {
	// Pos is the position of the token that marks the scope
	// change.
	Pos src.XPos

	// Scope identifies the innermost scope to the right of Pos.
	Scope ScopeID
}

// A ScopeID represents a lexical scope within a function.
type ScopeID int32

const (
	funcDupok      = 1 << iota // duplicate definitions ok

	scopes.Framework.Debugf("Creating new testContext: %q", id)

	if parentScope == nil {
		parentScope = s.globalScope
	}

	scopeID := fmt.Sprintf("[%s]", id)
	ctx := &testContext{
		id:         id,
		test:       test,
		T:          goTest,
		suite:      s,
		scope:      newScope(scopeID, parentScope),
		workDir:    workDir,
		FileWriter: yml.NewFileWriter(workDir),
	}

	if test.topLevel {