Commerce already defines two menu items in the Navigation menu:
- Shopping cart - 'cart' - enabled by default, static
- Shopping cart - 'cart/my' - disabled by default, dynamic
'cart/my' uses a custom title callback, 'commerce_cart_menu_item_title' that builds a dynamic menu link in the form: Shopping cart (2 items)
If I want to add a new menu item for the shopping cart to the User Menu, what's the proper way to do this? Do I first need to duplicate a menu item, then override the duplicate?
Ideally, I would be able to set my own title callback so that I can optionally build a dynamic menu in any format I choose.