save on exit message, * symbol on unsaved docs, saved status on history

engine/main.cpp

@@ -671,6 +671,10 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT msg, WPARAM wp, LPARAM lp)
         break;
     }
     }
+
+    // avoid annoying alt system menu
+    if (wp == SC_KEYMENU && (lp >> 16) <= 0) return 0;
+
     return DefWindowProc(hWnd, msg, wp, lp);
 }