# tmux.SessionHookValues.AfterCopyMode

- **Module:** tmux.SessionHookValues
- **Package:** github.com/libtmux/libtmux-go/tmux
- **Language:** Go
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-go/blob/5f808882015a975a65acc7f9da5b3ff0d5cbdc91/tmux/option_generated.go#L3802
- **Page:** https://libtmux.org/reference/go/tmux-sessionhookvalues-aftercopymode/

```
tmux.SessionHookValues.AfterCopyMode() -> OptionValue[SparseArray[string]]
```

AfterCopyMode returns materialized "after-copy-mode" as [OptionValue] with value type OptionValue[SparseArray[string]] from session hook values; it does not query tmux. Available as COMMAND since tmux 3.2a. Its present SparseArray value preserves assigned tmux indexes, including gaps.