# options_set_string

- **Language:** C
- **Kind:** function
- **Source:** https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/options.c#L712
- **Page:** https://libtmux.org/en/tmux/3.2a/reference/c-function-options_set_string/

```c
struct options_entry * options_set_string(struct options *oo, const char *name, int append, const char *fmt,...)
```

## Parameters

- `oo` (`struct options *`)
- `name` (`const char *`)
- `append` (`int`)
- `fmt` (`const char *`)
- `` (`...`)

## Called by

- [`cmd_new_session_exec`](/en/tmux/3.2a/reference/c-function-cmd-new-session-c-cmd_new_session_exec/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/cmd-new-session.c#L256)
- [`cmd_select_pane_exec`](/en/tmux/3.2a/reference/c-function-cmd-select-pane-c-cmd_select_pane_exec/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/cmd-select-pane.c#L160)
- [`cmd_set_option_exec`](/en/tmux/3.2a/reference/c-function-cmd-set-option-c-cmd_set_option_exec/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/cmd-set-option.c#L177)
- [`main`](/en/tmux/3.2a/reference/c-function-main/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/tmux.c#L471)
- [`options_from_string`](/en/tmux/3.2a/reference/c-function-options_from_string/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/options.c#L1037)

## Calls

- [`fatalx`](/en/tmux/3.2a/reference/c-function-fatalx/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/options.c#L744)
- [`options_add`](/en/tmux/3.2a/reference/c-function-options-c-options_add/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/options.c#L736)
- [`options_default`](/en/tmux/3.2a/reference/c-function-options_default/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/options.c#L738)
- [`options_get_only`](/en/tmux/3.2a/reference/c-function-options_get_only/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/options.c#L724)
- [`xasprintf`](/en/tmux/3.2a/reference/c-function-xasprintf/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/options.c#L731)
- [`xvasprintf`](/en/tmux/3.2a/reference/c-function-xvasprintf/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/options.c#L721)

## Other function references

- [`options_parent_table_entry`](/en/tmux/3.2a/reference/c-function-options-c-options_parent_table_entry/) (function)

## Referenced declarations

- [`options_entry.cached`](/en/tmux/3.2a/reference/c-struct-options_entry-cached/) (attribute)
- [`options_entry.name`](/en/tmux/3.2a/reference/c-struct-options_entry-name/) (attribute)
- [`options`](/en/tmux/3.2a/reference/c-struct-options/) (struct)
- [`options_entry`](/en/tmux/3.2a/reference/c-struct-options_entry/) (struct)
- [`OPTIONS_IS_STRING`](/en/tmux/3.2a/reference/c-define-options-c-options_is_string/) (constant)
- [`options_table_entry.separator`](/en/tmux/3.2a/reference/c-struct-options_table_entry-separator/) (attribute)
- [`options_value.string`](/en/tmux/3.2a/reference/c-union-options_value-string/) (attribute)
- [`options_entry.tableentry`](/en/tmux/3.2a/reference/c-struct-options_entry-tableentry/) (attribute)
- [`options_entry.value`](/en/tmux/3.2a/reference/c-struct-options_entry-value/) (attribute)