# tmux.Server.SetCodepointWidths

- **Module:** tmux.Server
- **Package:** github.com/libtmux/libtmux-go/tmux
- **Language:** Go
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-go/blob/5f808882015a975a65acc7f9da5b3ff0d5cbdc91/tmux/option_generated.go#L7050
- **Page:** https://libtmux.org/reference/go/tmux-server-setcodepointwidths/

```
tmux.Server.SetCodepointWidths(ctx: context.Context, value: SparseArray[string]) -> (SetArrayResult, error)
```

SetCodepointWidths replaces the complete "codepoint-widths" server option array with SparseArray[string], preserving holes and empty values (tmux 3.6 or later). Read it with [ServerOptionValues.CodepointWidths] from [Server.Options]; [Server.UnsetOption] restores inheritance or the global default. Replacement is not atomic: the result reports confirmed writes, and failures stop without rollback. Serialize concurrent replacement of the same target and option.