how to get terminal width and height from init.lua ?

[rumly111]

What system are you running Yazi on?

Linux X11

What terminal are you running Yazi in?

wezterm 20240203-110809-5046fc22

yazi --debug output

Yazi
    Version: 26.1.22 (Arch Linux 2026-01-24)
    Debug  : false
    Triple : x86_64-unknown-linux-gnu (linux-x86_64)
    Rustc  : 1.93.0 (254b5960 2026-01-19)

Ya
    Version: 26.1.22 (Arch Linux 2026-01-24)

Config
    Init             : /home/joseph/.config/yazi/init.lua (2514 chars)
    Yazi             : /home/joseph/.config/yazi/yazi.toml (2146 chars)
    Keymap           : /home/joseph/.config/yazi/keymap.toml (5223 chars)
    Theme            : /home/joseph/.config/yazi/theme.toml (No such file or directory (os error 2))
    VFS              : /home/joseph/.config/yazi/vfs.toml (No such file or directory (os error 2))
    Package          : /home/joseph/.config/yazi/package.toml (1394 chars)
    Dark/light flavor: "" / ""

Emulator
    TERM                : Some("xterm-256color")
    TERM_PROGRAM        : Some("WezTerm")
    TERM_PROGRAM_VERSION: Some("20240203-110809-5046fc22")
    Brand.from_env      : Some(WezTerm)
    Emulator.detect     : Emulator { kind: Left(WezTerm), version: "WezTerm 20240203-110809-5046fc22", light: false, csi_16t: (24, 47), force_16t: false }

Adapter
    Adapter.matches    : Iip
    Dimension.available: Dimension { rows: 41, columns: 148, width: 3552, height: 1927 }

Desktop
    XDG_SESSION_TYPE           : Some("x11")
    WAYLAND_DISPLAY            : None
    DISPLAY                    : Some(":0.0")
    SWAYSOCK                   : None
    HYPRLAND_INSTANCE_SIGNATURE: None
    WAYFIRE_SOCKET             : None

SSH
    shared.in_ssh_connection: false

WSL
    WSL: false

Variables
    SHELL              : Some("/usr/bin/fish")
    EDITOR             : Some("/usr/bin/helix")
    VISUAL             : Some("/usr/bin/helix")
    YAZI_FILE_ONE      : None
    YAZI_CONFIG_HOME   : None
    YAZI_ZOXIDE_OPTS   : None
    FZF_DEFAULT_OPTS   : None
    FZF_DEFAULT_COMMAND: None

Text Opener
    default     : Some(OpenerRule { run: "${EDITOR:-vi} %s", block: true, orphan: false, desc: "$EDITOR", for: None, spread: true })
    block-create: Some(OpenerRule { run: "${EDITOR:-vi} %s", block: true, orphan: false, desc: "$EDITOR", for: None, spread: true })
    block-rename: Some(OpenerRule { run: "${EDITOR:-vi} %s", block: true, orphan: false, desc: "$EDITOR", for: None, spread: true })

Multiplexers
    TMUX               : false
    tmux version       : tmux 3.6a
    tmux build flags   : enable-sixel=Supported
    ZELLIJ_SESSION_NAME: None
    Zellij version     : 0.43.1

Dependencies
    file          : 5.46
    ueberzugpp    : No such file or directory (os error 2)
    ffmpeg/ffprobe: 8.0.1 / 8.0.1
    pdftoppm      : 26.01.0
    magick        : 7.1.2-13
    fzf           : 0.67.0
    fd/fdfind     : 10.3.0 / No such file or directory (os error 2)
    rg            : 15.1.0
    chafa         : 1.16.2
    zoxide        : 0.9.8
    7zz/7z        : No such file or directory (os error 2) / 25.01
    resvg         : 0.46.0
    jq            : 1.8.1

Clipboard
    wl-copy/paste: 2.2.1 / 2.2.1
    xclip        : 0.13
    xsel         : No such file or directory (os error 2)

Routine
    `file -bL --mime-type`: text/plain


See https://yazi-rs.github.io/docs/plugins/overview#debugging on how to enable logging or debug runtime errors.

Describe the question

I want to use the plugin full-border to get nice rounded borders in yazi. But I want them only if my terminal is larger than 200x50 . I tried adding it to my init.lua:

local width = ui.Rect.w
local height = ui.Rect.h

if (width >= 200 and height >= 50) then
  require("full-border"):setup {
  	-- Available values: ui.Border.PLAIN, ui.Border.ROUNDED
  	type = ui.Border.ROUNDED,
  }
end

But it didn't work, saying I try to compare number with nil. Any suggestions?

Anything else?

No response

Checklist

• I have read all the documentation
• I have searched the existing discussions/issues

[sxyazi]

There's no builtin API to do so at the moment, but this works for me:

local lines = Command("tput"):arg("lines"):output().stdout:match("%d+")
local columns = Command("tput"):arg("columns"):output().stdout:match("%d+")
print(lines, columns)

which calls tput(1) to get the terminal width and height

[rumly111]

Command("tput"):arg("columns"):output().stdout:match("%d+")

It doesn't work for me. The weird thing is that when I just run tput cols and tput lines in terminal (not from yazi lua script), it shows me the correct $LINES and $COLUMNS . But if I put it into init.lua:

local width = Command("tput"):arg("cols"):output().stdout:match("%d+")
local height = Command("tput"):arg("lines"):output().stdout:match("%d+")

print(width, height)

if (width >= 200 and height >= 50) then
  require("full-border"):setup {
  	-- Available values: ui.Border.PLAIN, ui.Border.ROUNDED
  	type = ui.Border.ROUNDED,
  }
end

It prints 80 24 and then doesn't draw borders. It seems yazi might give it's lua scripts an isolated environment.

[sxyazi]

It prints 80 24 and then doesn't draw borders.

So tput did return the terminal width and height in init.lua right?

if (width >= 200 and height >= 50) then

Bote width and height are strings, it doesn't seem to be right to compare them with numbers - call tonumber() before doing so

[rumly111]

It prints 80 24 and then doesn't draw borders.

So tput did return the terminal width and height in init.lua right?

if (width >= 200 and height >= 50) then

Bote width and height are strings, it doesn't seem to be right to compare them with numbers - call tonumber() before doing so

This is my current code, I already gave up trying to figure it out.

local width = tonumber(Command("tput"):arg("cols"):output().stdout:match("%d+"))
local height = tonumber(Command("tput"):arg("lines"):output().stdout:match("%d+"))

print(width, height)

if (width >= 200 and height >= 50) then
  require("full-border"):setup {
  	-- Available values: ui.Border.PLAIN, ui.Border.ROUNDED
  	type = ui.Border.ROUNDED,
  }
end

[rumly111]

I also tried height = tonumber(os.getenv("LINES")), but I got nil, still no luck there.

[rumly111]

so it's impossible ?