Support os_window as a destination for the pipe function

kitty/boss.py

@@ -824,6 +824,8 @@ class Boss:
             tm = self.active_tab_manager
             if tm is not None:
                 tm.new_tab(special_window=create_window(), cwd_from=cwd_from)
+        elif dest == 'os_window':
+            self._new_os_window(create_window(), cwd_from=cwd_from)
         else:
             import subprocess
             subprocess.Popen(cmd)

kitty/config_data.py

@@ -840,10 +840,9 @@ run a fullscreen terminal application, the secondary screen will be the screen
 you return to when quitting the application. You can also use ``none`` for no
 :file:`STDIN` input.
 
-To open in a new window or tab use ``window`` or ``tab`` respectively. You can
-also use ``none`` in which case the data will be piped into the program without
-creating any windows.
-'''))
+To open in a new window, tab or new OS window, use ``window``, ``tab``, or
+``os_window`` respectively. You can also use ``none`` in which case the data
+will be piped into the program without creating any windows.  '''))
 
 
 # }}}