wezterm: Allow toggling tab bar display

Tab display can be toggled on or off with `Ctrl+Shift+T`. The toggling
takes place per-window and not globally, so we can have a wezterm
terminal on desktop 1 with a tabbar and on desktop 2 without. Opening
a new terminal always defaults to an enabled tab bar.

terminal/.config/wezterm/events.lua

@@ -67,15 +67,27 @@ local function setup()
 		wezterm.log_info("toggling the leader")
 		local overrides = window:get_config_overrides() or {}
 		if not overrides.leader then
-			wezterm.log_info("leader wasn't set")
+			wezterm.log_info("enabling leader key")
 			overrides.leader = { key = "s", mods = "SUPER" }
 		else
-			wezterm.log_info("leader was set")
+			wezterm.log_info("disabling leader key")
 			overrides.leader = nil
 		end
 
 		window:set_config_overrides(overrides)
 	end)
+
+	wezterm.on("toggle-tabbar", function(window, _)
+		local overrides = window:get_config_overrides() or {}
+		if overrides.enable_tab_bar == false then
+			wezterm.log_info("showing tab bar")
+			overrides.enable_tab_bar = true
+		else
+			wezterm.log_info("hiding tab bar")
+			overrides.enable_tab_bar = false
+		end
+		window:set_config_overrides(overrides)
+	end)
 end
 
 return { setup = setup }

terminal/.config/wezterm/maps.lua

@@ -100,6 +100,7 @@ local keys = {
 		action = act.EmitEvent("ActivatePaneDirection-Right"),
 	},
 	{ key = "a", mods = "CTRL|ALT", action = act.EmitEvent("toggle-leader") },
+	{ key = "T", mods = "CTRL", action = act.EmitEvent("toggle-tabbar") },
 }
 -- Leader + number to activate that tab
 for i = 1, 8 do

terminal/.config/wezterm/wezterm.lua

@@ -25,6 +25,7 @@ end
 
 local settings = {
 	enable_wayland = true,
+	enable_tab_bar = true,
 	hide_tab_bar_if_only_one_tab = true,
 	use_fancy_tab_bar = false,
 	tab_bar_at_bottom = true,