// A gccgo command line can contain -( and -).
		// Make sure we quote them since they are special to the shell.
		// The trimpath argument can also contain > (part of =>) and ;. Quote those too.
		if s == "" || strings.ContainsAny(s, " ()>;") || len(q) > len(s)+2 {
			buf.WriteString(q)
		} else {
			buf.WriteString(s)
		}
	}
	return buf.String()

		}

		fields, _ := quoted.Split(compiler)
		if len(fields) == 0 {
			return "", "", fmt.Errorf("%s: compilation command confusion %q", name, out)
		}
		exe = fields[0]
		if !strings.ContainsAny(exe, `/\`) {
			if lp, err := cfg.LookPath(exe); err == nil {
				exe = lp
			}
		}
		id, err = buildid.ReadFile(exe)
		if err != nil {
			return "", "", err
		}

	}

	modload.WriteWorkFile(gowork, workFile)
}

// flagEditworkGodebug implements the -godebug flag.
func flagEditworkGodebug(arg string) {
	key, value, ok := strings.Cut(arg, "=")
	if !ok || strings.ContainsAny(arg, "\"`',") {
		base.Fatalf("go: -godebug=%s: need key=value", arg)
	}
	workedits = append(workedits, func(f *modfile.WorkFile) {
		if err := f.AddGodebug(key, value); err != nil {

	// case letter, it can only be a symbol in the current directory.
	// Kills the problem caused by case-insensitive file systems
	// matching an upper case name as a package name.
	if !strings.ContainsAny(arg, `/\`) && token.IsExported(arg) {
		pkg, err := build.ImportDir(".", build.ImportComment)
		if err == nil {
			return pkg, "", arg, false
		}
	}

}

func CheckGodebug(verb, k, v string) error {
	if strings.ContainsAny(k, " \t") {
		return fmt.Errorf("key contains space")
	}
	if strings.ContainsAny(v, " \t") {
		return fmt.Errorf("value contains space")
	}
	if strings.ContainsAny(k, ",") {
		return fmt.Errorf("key contains comma")
	}
	if strings.ContainsAny(v, ",") {
		return fmt.Errorf("value contains comma")
	}

			return []string{"fossil", "cat", "-R", ".fossil", "-r", rev, file}
		},
		readZip: func(rev, subdir, remote, target string) []string {
			extra := []string{}
			if subdir != "" && !strings.ContainsAny(subdir, "*?[],") {
				extra = []string{"--include", subdir}
			}
			// Note that vcsRepo.ReadZip below rewrites this command
			// to run in a different directory, to work around a fossil bug.

	}

	if !utf8.ValidString(val) {
		return fmt.Errorf("invalid UTF-8 in %s=... value", key)
	}
	if strings.Contains(val, "\x00") {
		return fmt.Errorf("invalid NUL in %s=... value", key)
	}
	if strings.ContainsAny(val, "\v\r\n") {
		return fmt.Errorf("invalid newline in %s=... value", key)
	}
	return nil
}

func readEnvFileLines(mustExist bool) []string {
	file, _, err := cfg.EnvFile()
	if file == "" {

	{[]byte("aRegExp*"), ".(|)*+?^$[]", true},
	{[]byte(dots + dots + dots), " ", false},
}

func TestContainsAny(t *testing.T) {
	for _, ct := range ContainsAnyTests {
		if ContainsAny(ct.b, ct.substr) != ct.expected {
			t.Errorf("ContainsAny(%s, %s) = %v, want %v",
				ct.b, ct.substr, !ct.expected, ct.expected)
		}
	}
}

var ContainsRuneTests = []struct {
	b        []byte
	r        rune

			return
		}
	}
	if name := pathpkg.Base(p.ImportPath); !SafeArg(name) {
		setError(fmt.Errorf("invalid input directory name %q", name))
		return
	}
	if strings.ContainsAny(p.Dir, "\r\n") {
		setError(fmt.Errorf("invalid package directory %q", p.Dir))
		return
	}

	// Build list of imported packages and full dependency list.
	imports := make([]*Package, 0, len(p.Imports))

			log.Fatalf("creating coverage meta-data builder: %v\n", err)
		}
		p = &Package{
			mdb: mdb,
		}
	}
	// TODO: process files in parallel here if it matters.
	for k, name := range names {
		if strings.ContainsAny(name, "\r\n") {
			// annotateFile uses '//line' directives, which don't permit newlines.
			log.Fatalf("cover: input path contains newline character: %q", name)
		}

		fd := os.Stdout
		isStdout := true