Add an option to control quit on last window behavior

docs/changelog.rst

@@ -48,7 +48,9 @@ Changelog
   working if no kitty window currently has focus. (:iss:`524`)
 
 - macOS: Keep kitty running even when the last window is closed. This is in
-  line with how applications are supposed to behave on macOS (:iss:`543`)
+  line with how applications are supposed to behave on macOS (:iss:`543`).
+  There is a new option (:opt:`macos_quit_when_last_window_closed`) to control
+  this.
 
 - macOS: Add macOS standard shortcuts for copy, paste and new OS window
   (⌘+C, ⌘+V, ⌘+N)

kitty/child-monitor.c

@@ -749,7 +749,9 @@ process_pending_closes(ChildMonitor *self) {
         } else has_open_windows = true;
     }
 #ifdef __APPLE__
-    if (!has_open_windows && !application_quit_requested()) has_open_windows = true;
+    if (!OPT(macos_quit_when_last_window_closed)) {
+        if (!has_open_windows && !application_quit_requested()) has_open_windows = true;
+    }
 #endif
     return has_open_windows;
 }

kitty/config_data.py

@@ -657,14 +657,12 @@ probably better off just hiding the titlebar with :opt:`macos_hide_titlebar`.
 o('macos_hide_titlebar', False, long_text=_('''
 Hide the kitty window's title bar on macOS.'''))
 
-
 o('x11_hide_window_decorations', False, long_text=_('''
 Hide the window decorations (title bar and window borders) on X11 and Wayland.
 Whether this works and exactly what effect it has depends on the window
 manager, as it is the job of the window manager/compositor to draw window
 decorations.'''))
 
-
 o('macos_option_as_alt', True, long_text=_('''
 Use the option key as an alt key. With this set to no, kitty will use
 the macOS native :kbd:`Option+Key` = unicode character behavior. This will
@@ -676,6 +674,12 @@ o('macos_hide_from_tasks', False, long_text=_('''
 Hide the kitty window from running tasks (:kbd:`Option+Tab`) on macOS.
 '''))
 
+o('macos_quit_when_last_window_closed', False, long_text=_('''
+Have kitty quit when all the top-level windows are closed. By default,
+kitty will stay running, even with no open windows, as is the expected
+behavior on macOS.
+'''))
+
 
 # }}}
 

kitty/state.c

@@ -385,6 +385,7 @@ PYWRAP1(set_options) {
     S(window_alert_on_bell, PyObject_IsTrue);
     S(macos_option_as_alt, PyObject_IsTrue);
     S(macos_hide_titlebar, PyObject_IsTrue);
+    S(macos_quit_when_last_window_closed, PyObject_IsTrue);
     S(x11_hide_window_decorations, PyObject_IsTrue);
     S(macos_hide_from_tasks, PyObject_IsTrue);
 

kitty/state.h

@@ -23,7 +23,7 @@ typedef struct {
     color_type url_color, background, active_border_color, inactive_border_color, bell_border_color;
     double repaint_delay, input_delay;
     bool focus_follows_mouse;
-    bool macos_option_as_alt, macos_hide_titlebar, macos_hide_from_tasks, x11_hide_window_decorations;
+    bool macos_option_as_alt, macos_hide_titlebar, macos_hide_from_tasks, x11_hide_window_decorations, macos_quit_when_last_window_closed;
     int adjust_line_height_px, adjust_column_width_px;
     float adjust_line_height_frac, adjust_column_width_frac;
     float background_opacity, dim_opacity;