Add quit_when_all_windows_are_closed config option

refs: https://github.com/wez/wezterm/issues/3057

config/src/config.rs

@@ -671,6 +671,9 @@ pub struct Config {
     #[dynamic(default = "default_stateless_process_list")]
     pub skip_close_confirmation_for_processes_named: Vec<String>,
 
+    #[dynamic(default = "default_true")]
+    pub quit_when_all_windows_are_closed: bool,
+
     #[dynamic(default = "default_true")]
     pub warn_about_missing_glyphs: bool,
 

docs/changelog.md

@@ -66,6 +66,8 @@ As features stabilize some brief notes about them will accumulate here.
 * macOS: added a dock menu that allows spawning new windows. Thanks to
   [@dahlia](https://github.com/dahlia)!
   [#3054](https://github.com/wez/wezterm/pull/3054)
+* [quit_when_all_windows_are_closed](config/lua/config/quit_when_all_windows_are_closed.md)
+  configuration option.
 
 #### Fixed
 * X11: hanging or killing the IME could hang wezterm

docs/config/lua/config/quit_when_all_windows_are_closed.md

@@ -0,0 +1,9 @@
+# `quit_when_all_windows_are_closed = true`
+
+*Since: nightly builds only*
+
+When set to `true`, wezterm will terminate when all windows are closed. This is
+the default behavior.
+
+When set to `false`, wezterm will continue running.
+

wezterm-gui/src/frontend.rs

@@ -103,8 +103,7 @@ impl GuiFrontEnd {
                         | Alert::SetUserVar { .. },
                 } => {}
                 MuxNotification::Empty => {
-                    #[cfg(not(target_os = "macos"))]
-                    {
+                    if config::configuration().quit_when_all_windows_are_closed {
                         promise::spawn::spawn_into_main_thread(async move {
                             if mux::activity::Activity::count() == 0 {
                                 log::trace!("Mux is now empty, terminate gui");