# tmux.SetOptionOptions

- **Module:** tmux
- **Package:** github.com/libtmux/libtmux-go/tmux
- **Language:** Go
- **Kind:** struct
- **Source:** https://github.com/libtmux/libtmux-go/blob/5f808882015a975a65acc7f9da5b3ff0d5cbdc91/tmux/option_mutation.go#L7
- **Page:** https://libtmux.org/reference/go/tmux-setoptionoptions/

SetOptionOptions controls set-option mutation flags. Its zero value sends no optional mutation flags.

## Members

- `ExpandFormat` (attribute) — ExpandFormat expands tmux formats in the value before storing it.
- `PreventOverwrite` (attribute) — PreventOverwrite leaves an existing option unchanged.
- `Quiet` (attribute) — Quiet suppresses tmux's missing-option diagnostic.