# options_first

- **Language:** C
- **Kind:** function
- **Source:** https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/options.c#L204
- **Page:** https://libtmux.org/en/tmux/3.7c/reference/c-function-options_first/

```c
struct options_entry * options_first(struct options *oo)
```

## Parameters

- `oo` (`struct options *`)

## Called by

- [`cmd_show_options_all`](/en/tmux/3.7c/reference/c-function-cmd-show-options-c-cmd_show_options_all/) (function) [Call site](https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/cmd-show-options.c#L211)
- [`format_add_window_neighbor`](/en/tmux/3.7c/reference/c-function-format-c-format_add_window_neighbor/) (function) [Call site](https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/format.c#L4725)
- [`window_customize_build_options`](/en/tmux/3.7c/reference/c-function-window-customize-c-window_customize_build_options/) (function) [Call site](https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/window-customize.c#L418)
- [`window_customize_find_user_options`](/en/tmux/3.7c/reference/c-function-window-customize-c-window_customize_find_user_options/) (function) [Call site](https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/window-customize.c#L349)

## Referenced declarations

- [`options`](/en/tmux/3.7c/reference/c-struct-options/) (struct)
- [`options_entry`](/en/tmux/3.7c/reference/c-struct-options_entry/) (struct)
- [`options.tree`](/en/tmux/3.7c/reference/c-struct-options-tree/) (attribute)