// Output:
	// true
	// false
}

func ExampleRegexp_FindString() {
	re := regexp.MustCompile(`foo.?`)
	fmt.Printf("%q\n", re.FindString("seafood fool"))
	fmt.Printf("%q\n", re.FindString("meat"))
	// Output:
	// "food"
	// ""
}

func ExampleRegexp_FindStringIndex() {
	re := regexp.MustCompile(`ab?`)
	fmt.Println(re.FindStringIndex("tablett"))

	if !ok {
		return types.MaybeNoSuchOverloadErr(regexVal)
	}
	re, err := regexp.Compile(regex)
	if err != nil {
		return types.NewErr("Illegal regex: %v", err.Error())
	}
	result := re.FindString(str)
	return types.String(result)
}

func findAll(args ...ref.Val) ref.Val {
	argn := len(args)
	if argn < 2 || argn > 3 {
		return types.NoSuchOverloadErr()
	}
	str, ok := args[0].Value().(string)

		arg := list[i]
		if disallow != nil && disallow.FindString(arg) == arg {
			goto Bad
		}
		if allow != nil && allow.FindString(arg) == arg {
			continue Args
		}
		for _, re := range invalid {
			if re.FindString(arg) == arg { // must be complete match
				goto Bad
			}
		}
		for _, re := range valid {
			if re.FindString(arg) == arg { // must be complete match
				continue Args
			}
		}

func MajorMinor(v version.Info) (int, int, error) {
	major, err := strconv.Atoi(v.Major)
	if err != nil {
		return 0, 0, err
	}
	minor, err := strconv.Atoi(leadingDigits.FindString(v.Minor))
	if err != nil {
		return 0, 0, err
	}
	return major, minor, nil
}

// IsDeprecated returns true if obj implements APILifecycleDeprecated() and returns

}

func checkNCPU(list []string) error {
	listString := strings.Join(list, ",")
	if len(listString) == 0 {
		return fmt.Errorf("could not check against an empty CPU list")
	}

	cListString := cpuSetRE.FindString(listString)
	if len(cListString) == 0 {
		return fmt.Errorf("invalid cpuset output '%s'", listString)
	}
	// Launch FreeBSDNumCPUHelper() with specified CPUs list.

	for _, featureText := range utilfeature.DefaultFeatureGate.KnownFeatures() {
		// we have to parse this from KnownFeatures, because usage of mutable FeatureGate is not allowed in unit tests
		feature := featureGateRegex.FindString(featureText)
		if strings.Contains(featureText, string(featuregate.Alpha)) && feature != "AllAlpha" {
			alphaFeatures.Insert(feature)
		}

	}

	for name, controller := range NewControllerDescriptors() {

	cmd, args := input[:1], input[1:]
	name := cmd[0]

	c := pprofCommands[name]
	if c == nil {
		// Attempt splitting digits on abbreviated commands (eg top10)
		if d := tailDigitsRE.FindString(name); d != "" && d != name {
			name = name[:len(name)-len(d)]
			cmd[0], args = name, append([]string{d}, args...)
			c = pprofCommands[name]
		}
	}
	if c == nil {
		if _, ok := configHelp[name]; ok {

	{"32M", 32 << 20},
}

func TestLongest(t *testing.T) {
	re, err := Compile(`a(|b)`)
	if err != nil {
		t.Fatal(err)
	}
	if g, w := re.FindString("ab"), "a"; g != w {
		t.Errorf("first match was %q, want %q", g, w)
	}
	re.Longest()
	if g, w := re.FindString("ab"), "ab"; g != w {
		t.Errorf("longest match was %q, want %q", g, w)
	}
}

// TestProgramTooLongForBacktrack tests that a regex which is too long

)

// validateWithRegex checks whether the given value matches the regexp r.
func validateWithRegex(path util.Path, val any, r *regexp.Regexp) (errs util.Errors) {
	valStr := fmt.Sprint(val)
	if len(r.FindString(valStr)) != len(valStr) {
		errs = util.AppendErr(errs, fmt.Errorf("invalid value %s: %v", path, val))
		printError(errs.ToError())
	}
	return errs
}

	b.StopTimer()
	re := MustCompile("a+b+")
	wantSubs := "aaabb"
	s := "acbb" + wantSubs + "dd"
	b.StartTimer()
	b.ReportAllocs()
	for i := 0; i < b.N; i++ {
		subs := re.FindString(s)
		if subs != wantSubs {
			b.Fatalf("FindString(%q) = %q; want %q", s, subs, wantSubs)
		}
	}
}

func BenchmarkFindSubmatch(b *testing.B) {
	b.StopTimer()
	re := MustCompile("a(a+b+)b")
	wantSubs := "aaabb"