Show engine id in build window in newgrf developer mode

cm_changelog.txt

@@ -74,6 +74,13 @@ This is usable for any OpenTTD servers
 
 == CHANGELOG ==
 
+*** next
+- Show engine id in build window in newgrf developer mode.
+
+*** 1.10.1 (15 Apr 2020) ***
+- Add a setting to autoopen vehicle window when cloning vehicles while sharing orders.
+- Add a setting to autoopen orders window along with a vehicle window for new vehicles.
+
 *** 1.10.0 (1 Apr 2020) ***
 - OpenTTD update.
 

src/build_vehicle_gui.cpp

@@ -870,6 +870,12 @@ int DrawVehiclePurchaseInfo(int left, int right, int y, EngineID engine_number,
 	bool refittable = IsArticulatedVehicleRefittable(engine_number);
 	bool articulated_cargo = false;
 
+	if (_settings_client.gui.newgrf_developer_tools) {
+		SetDParam(0, e->index);
+		DrawString(left, right, y, STR_CM_PURCHASE_ENGINE_ID);
+		y += FONT_HEIGHT_NORMAL;
+	}
+
 	switch (e->type) {
 		default: NOT_REACHED();
 		case VEH_TRAIN:

src/lang/english.txt

@@ -5515,4 +5515,5 @@ STR_CM_STATION_BUILD_TOWN_SMALL :{BLACK}Town: {GOLD}{TOWN} (S)
 STR_CM_CONFIG_SETTING_OPEN_VEHICLE_FOR_SHARED_CLONE :Open vehicle window for shared clones: {STRING2}
 STR_CM_CONFIG_SETTING_OPEN_VEHICLE_FOR_SHARED_CLONE_HELPTEXT :Open vehicle window when cloning vehicles with shared orders (as it does for non-shared ones)
 STR_CM_CONFIG_SETTING_OPEN_ORDERS_FOR_NEW_VEHICLES :Open orders window for new vehicles: {STRING2}
-STR_CM_CONFIG_SETTING_OPEN_ORDERS_FOR_NEW_VEHICLES_HELPTEXT :Automatically open oreders windown along with a vehicle window for a new vehicles
+STR_CM_CONFIG_SETTING_OPEN_ORDERS_FOR_NEW_VEHICLES_HELPTEXT :Automatically open oreders windown along with a vehicle window for a new vehicles
+STR_CM_PURCHASE_ENGINE_ID :{BLACK}Engine ID: {GOLD}{NUM}