Fix: alt+leftbracket for splitter filters got dropped somehow, bring it back

Author: ahicks92

control.lua

@@ -3225,9 +3225,24 @@ EventManager.on_event(
       local p = game.get_player(pindex)
       local stack = p.cursor_stack
 
-      -- Only handle offshore pumps with alt+[
+      -- Handle offshore pumps with alt+[
       if stack and stack.valid_for_read and stack.name == "offshore-pump" then
          BuildingTools.build_offshore_pump_in_hand(pindex)
+         return
+      end
+
+      -- Handle splitter filter set/clear
+      local selected = p.selected
+      if selected and selected.valid and selected.type == "splitter" then
+         local result
+         if stack and stack.valid_for_read then
+            -- Set filter to item in hand
+            result = TransportBelts.set_splitter_priority(selected, nil, nil, stack, false)
+         else
+            -- Clear filter with empty hand
+            result = TransportBelts.set_splitter_priority(selected, nil, nil, nil, true)
+         end
+         Speech.speak(pindex, result)
       end
    end
 )

locale/en/controls.cfg

@@ -7,4 +7,4 @@ fa-backspace=Clear field (Backspace)
 fa-c-backspace=Delete blueprint/planner (Ctrl+Backspace)
 fa-n=Circuit network immediate neighbors (N)
 fa-s-n=Circuit network navigator (Shift+N)
-fa-a-leftbracket=Assisted offshore pump placement (Alt+[)
+fa-a-leftbracket=Assisted offshore pump placement / Set or clear splitter filter (Alt+[)