Dynamic padding for neovim

[erlestor]

What Operating System(s) are you running on?

Windows

Which Wayland compositor or X11 Window manager(s) are you using?

komorebi

WezTerm version

20240203-110809-5046fc22

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Actual question

Is there a way to set the padding to 0 only when I have neovim open in the active tab?

Background

I often have neovim in one tab and a development server running in another. When Im in the neovim tab I want 0 padding, but when i go the powershell tab with my dev server running I want 8px padding.

I've seen some gh issues mentioning the same, but the best solution I found was to use the "VimEnter" and "VimLeavePre" events to set change padding. The issue is that I often leave neovim running while i open another tab. Since I never left vim my padding is still set to zero.

I've also tried using pane:get_foreground_process_name() to check if neovim is currently open in the active tab, but this usually gives me the path to eg. "node.exe" which would be the same as when running a node command in powershell

[nekowinston]

You could try the approach I posted in #3839 (comment)

[erlestor]

Thanks a lot! I changed it a bit so the padding is 0 as long as one of the panes in the active tab has an alt screen active

wezterm.on("update-status", function(window, _)
    local tab = window:active_tab()
    local panes = tab:panes()
    local alt_screen_active = false
    
    for i = 1, #panes, 1 do
        local pane = panes[i]
        if pane:is_alt_screen_active() then
	    alt_screen_active = true
	    break
        end
    end
    
    if alt_screen_active then
    window:set_config_overrides({
        window_padding = { left = 0, right = 0, top = 0, bottom = 0 },
    })
    else
    window:set_config_overrides({
        window_padding = default_padding,
    })
    end
end)