}

func splitList(path string) []string {
	if path == "" {
		return []string{}
	}
	return strings.Split(path, string(ListSeparator))
}

func abs(path string) (string, error) {
	return unixAbs(path)
}

func join(elem []string) string {
	// If there's a bug here, fix the logic in ./path_unix.go too.
	for i, e := range elem {
		if e != "" {
			return Clean(strings.Join(elem[i:], string(Separator)))
		}

}

func splitList(path string) []string {
	if path == "" {
		return []string{}
	}
	return strings.Split(path, string(ListSeparator))
}

func abs(path string) (string, error) {
	return unixAbs(path)
}

func join(elem []string) string {
	// If there's a bug here, fix the logic in ./path_plan9.go too.
	for i, e := range elem {
		if e != "" {
			return Clean(strings.Join(elem[i:], string(Separator)))
		}

// path name for a given file is not guaranteed to be unique.
// Abs calls [Clean] on the result.
func Abs(path string) (string, error) {
	return abs(path)
}

func unixAbs(path string) (string, error) {
	if IsAbs(path) {
		return Clean(path), nil
	}
	wd, err := os.Getwd()
	if err != nil {
		return "", err
	}
	return Join(wd, path), nil
}

func packagefile(pkg string) string {
	return pathf("%s/pkg/obj/go-bootstrap/%s_%s/%s.a", goroot, goos, goarch, pkg)
}

// unixOS is the set of GOOS values matched by the "unix" build tag.
// This is the same list as in go/build/syslist.go and
// cmd/go/internal/imports/build.go.
var unixOS = map[string]bool{
	"aix":       true,
	"android":   true,
	"darwin":    true,
	"dragonfly": true,
	"freebsd":   true,

		return true
	}
	if ctxt.GOOS == "illumos" && name == "solaris" {
		return true
	}
	if ctxt.GOOS == "ios" && name == "darwin" {
		return true
	}
	if name == "unix" && unixOS[ctxt.GOOS] {
		return true
	}
	if name == "boringcrypto" {
		name = "goexperiment.boringcrypto" // boringcrypto is an old name for goexperiment.boringcrypto
	}

	// other tags

				// content.  Similarly, atime is set whenever
				// the contents are accessed; also, it is set
				// whenever mtime is set.
			case "windows":
				t.Error(errormsg)
			default: // unix's
				if got, want := at0, tt.wantATime; !got.Equal(want) {
					mounts, err := ReadFile("/bin/mounts")
					if err != nil {
						mounts, err = ReadFile("/etc/mtab")
					}