window:active_tab()
{{since('nightly')}}
A convenience accessor for returning the active tab within the window.
In earlier versions of wezterm, you could obtain this via:
function active_tab_for_gui_window(gui_window)
for _, item in ipairs(gui_window:mux_window():tabs_with_info()) do
if item.is_active then
return item.tab
end
end
end