Added "select all units" keybind

core/src/mindustry/input/Binding.java

@@ -19,6 +19,8 @@ public enum Binding implements KeyBind{
     deselect(KeyCode.mouseRight),
     break_block(KeyCode.mouseRight),
 
+    select_all_units(KeyCode.g),
+
     pickupCargo(KeyCode.leftBracket),
     dropCargo(KeyCode.rightBracket),
 

core/src/mindustry/input/DesktopInput.java

@@ -254,6 +254,15 @@ public class DesktopInput extends InputHandler{
         //validate commanding units
         selectedUnits.removeAll(u -> !u.isCommandable() || !u.isValid());
 
+        if(commandMode && input.keyTap(Binding.select_all_units) && !scene.hasField() && !scene.hasDialog()){
+            selectedUnits.clear();
+            for(var unit : player.team().data().units){
+                if(unit.isCommandable()){
+                    selectedUnits.add(unit);
+                }
+            }
+        }
+
         if(!scene.hasMouse() && !locked && state.rules.possessionAllowed){
             if(Core.input.keyDown(Binding.control) && Core.input.keyTap(Binding.select)){
                 Unit on = selectedUnit();