# fill-character

Source: https://libtmux.org/en/tmux/3.7c/catalog/options/fill-character/

> Set the character used to fill areas of the terminal unused by a window.

option tmux3.7c

Set the character used to fill areas of the terminal unused by a window.

* Scope

  window

* Type

  Text

* Set

  [`set-option`](https://libtmux.org/en/tmux/3.7c/manual/set-option/) `-w fill-character value`

* Read

  [`show-options`](https://libtmux.org/en/tmux/3.7c/manual/show-options/) `-w fill-character`

## Description[#](https://libtmux.org/en/tmux/3.7c/catalog/options/fill-character/#description)

Set the character used to fill areas of the terminal unused by a window.

## Releases[#](https://libtmux.org/en/tmux/3.7c/catalog/options/fill-character/#releases)

* [tmux 3.7c](https://libtmux.org/en/tmux/3.7c/catalog/options/fill-character/) : present
* tmux 3.2a : not present

## Source[#](https://libtmux.org/en/tmux/3.7c/catalog/options/fill-character/#source)

* Defined in

  [`options-table.c:1234`](https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/options-table.c#L1234)

* C source reference

  [`options_table`](https://libtmux.org/en/tmux/3.7c/reference/c-variable-options_table/)

* CLI Manual

  [Original manual entry](https://libtmux.org/en/tmux/3.7c/manual/full/#options-fill-character)

## Used by[#](https://libtmux.org/en/tmux/3.7c/catalog/options/fill-character/#used-by)

Library documentation that names this option.

* Rust

  [`options.generated.FILL_CHARACTER`](https://libtmux.org/en/rs/latest/reference/options-generated-fill_character/)

* Go

  [`tmux.GlobalWindowScope.SetFillCharacter`](https://libtmux.org/en/go/latest/reference/tmux-globalwindowscope-setfillcharacter/), [`tmux.Window.SetFillCharacter`](https://libtmux.org/en/go/latest/reference/tmux-window-setfillcharacter/), [`tmux.WindowOptionValues.FillCharacter`](https://libtmux.org/en/go/latest/reference/tmux-windowoptionvalues-fillcharacter/)