# popup-border-lines

Source: https://libtmux.org/en/tmux/3.7c/catalog/options/popup-border-lines/

> Set the type of characters used for drawing popup borders.

option tmux3.7c

Set the type of characters used for drawing popup borders.

* Scope

  window

* Type

  Choice

* Default

  `single`

* Values

  `single` `double` `heavy` `simple` `rounded` `padded` `none`

* Set

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

* Read

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

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

Set the type of characters used for drawing popup borders. `type` may be one of:

* single

  single lines using ACS or UTF-8 characters (default)

* rounded

  variation of single with rounded corners using UTF-8 characters

* double

  double lines using UTF-8 characters

* heavy

  heavy lines using UTF-8 characters

* simple

  simple ASCII characters

* padded

  simple ASCII space character

* none

  no border

‘`double`’ and ‘`heavy`’ will fall back to standard ACS line drawing when UTF-8 is not supported.

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

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

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

* Defined in

  [`options-table.c:1434`](https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/options-table.c#L1434)

* 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-popup-border-lines)

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

Library documentation that names this option.

* Rust

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

* Go

  [`tmux.GlobalWindowScope.SetPopupBorderLines`](https://libtmux.org/en/go/latest/reference/tmux-globalwindowscope-setpopupborderlines/), [`tmux.PopupBorderLines`](https://libtmux.org/en/go/latest/reference/tmux-popupborderlines/), [`tmux.Window.SetPopupBorderLines`](https://libtmux.org/en/go/latest/reference/tmux-window-setpopupborderlines/), [`tmux.WindowOptionValues.PopupBorderLines`](https://libtmux.org/en/go/latest/reference/tmux-windowoptionvalues-popupborderlines/)