Ensure global shortcuts are never sent to children

This was happening with ctrl+tab and ctrl+shift+tab because cocoa eats
these and so glfw has a workaround to always send them. If they are
added as global shortcuts, for exmaple for next/previous tab they were
then being sent to children

kitty/boss.py

@@ -168,6 +168,7 @@ class Boss:
         set_boss(self)
         self.opts, self.args = opts, args
         self.keymap = self.opts.keymap.copy()
+        self.global_shortcuts_map = {v: KeyAction(k) for k, v in global_shortcuts.items()}
         for sc in global_shortcuts.values():
             self.keymap.pop(sc, None)
         if is_macos:
@@ -668,6 +669,8 @@ class Boss:
                 self.pending_sequences = sequences
                 set_in_sequence_mode(True)
                 return True
+            if self.global_shortcuts_map and get_shortcut(self.global_shortcuts_map, ev):
+                return True
         elif isinstance(key_action, KeyAction):
             return self.dispatch_action(key_action)
 

kitty/config.py

@@ -35,7 +35,7 @@ SequenceMap = Dict[SingleKey, SubSequenceMap]
 
 class KeyAction(NamedTuple):
     func: str
-    args: Sequence[str]
+    args: Sequence[str] = ()
 
 
 func_with_args, args_funcs = key_func()