# tmux.Plan.JoinPane

- **Module:** tmux.Plan
- **Package:** github.com/libtmux/libtmux-go/tmux
- **Language:** Go
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-go/blob/5f808882015a975a65acc7f9da5b3ff0d5cbdc91/tmux/plan_pane.go#L216
- **Page:** https://libtmux.org/reference/go/tmux-plan-joinpane/

```
tmux.Plan.JoinPane(target: Ref, horizontal: bool)
```

JoinPane records the pane source names being moved beside the pane target names, splitting that pane's space.

Horizontal splits left and right; Detach leaves active selection alone.