# tmux.SetEnvironmentOptions

- **Module:** tmux
- **Package:** github.com/libtmux/libtmux-go/tmux
- **Language:** Go
- **Kind:** struct
- **Source:** https://github.com/libtmux/libtmux-go/blob/52968a3181c1c9e6d1b26c565d4b170968ae61c0/tmux/environment.go#L21
- **Page:** https://libtmux.org/en/go/latest/reference/tmux-setenvironmentoptions/

SetEnvironmentOptions controls tmux's value expansion and visibility flags. Its zero value stores Value literally and exposes it to child processes.

## Members

- `ExpandFormat` (attribute): ExpandFormat expands tmux format expressions in Value before storing it.
- `Hidden` (attribute): Hidden keeps the value available to tmux but out of child environments.