return s
		}
	}
	return "errno " + itoa.Itoa(int(e))
}

func (e Errno) Is(target error) bool {
	switch target {
	case oserror.ErrPermission:
		return e == EACCES || e == EPERM
	case oserror.ErrExist:
		return e == EEXIST || e == ENOTEMPTY
	case oserror.ErrNotExist:
		return e == ENOENT
	case errorspkg.ErrUnsupported:
		return e == ENOSYS || e == ENOTSUP || e == EOPNOTSUPP
	}
	return false
}

)

func (e Errno) Is(target error) bool {
	switch target {
	case oserror.ErrPermission:
		return e == ERROR_ACCESS_DENIED ||
			e == EACCES ||
			e == EPERM
	case oserror.ErrExist:
		return e == ERROR_ALREADY_EXISTS ||
			e == ERROR_DIR_NOT_EMPTY ||
			e == ERROR_FILE_EXISTS ||
			e == EEXIST ||
			e == ENOTEMPTY
	case oserror.ErrNotExist:
		return e == ERROR_FILE_NOT_FOUND ||

		{"(FileMode).IsRegular", Method, 16},
		{"(FileMode).Perm", Method, 16},
		{"(FileMode).String", Method, 16},
		{"(FileMode).Type", Method, 16},
		{"DirEntry", Type, 16},
		{"ErrClosed", Var, 16},
		{"ErrExist", Var, 16},
		{"ErrInvalid", Var, 16},
		{"ErrNotExist", Var, 16},
		{"ErrPermission", Var, 16},
		{"FS", Type, 16},
		{"File", Type, 16},
		{"FileInfo", Type, 16},
		{"FileInfoToDirEntry", Func, 17},

pkg io/fs, type SubFS interface, Open(string) (File, error)
pkg io/fs, type SubFS interface, Sub(string) (FS, error)
pkg io/fs, type WalkDirFunc func(string, DirEntry, error) error
pkg io/fs, var ErrClosed error
pkg io/fs, var ErrExist error
pkg io/fs, var ErrInvalid error
pkg io/fs, var ErrNotExist error
pkg io/fs, var ErrPermission error
pkg io/fs, var SkipDir error
pkg log, func Default() *Logger
pkg net, var ErrClosed error

pkg os, type Signal interface, String() string
pkg os, type SyscallError struct
pkg os, type SyscallError struct, Err error
pkg os, type SyscallError struct, Syscall string
pkg os, var Args []string
pkg os, var ErrExist error
pkg os, var ErrInvalid error
pkg os, var ErrNotExist error
pkg os, var ErrPermission error
pkg os, var Interrupt Signal
pkg os, var Kill Signal
pkg os, var Stderr *File
pkg os, var Stdin *File