There is currently no way in core to allow editing a term machine name via the admin UI. In Drupal, Taxonomy Machine Name module solves this problem:

Is this something that 80% could use, or does this belong in contrib?
That module claims integration with Views/Token/Pathauto, all of which are in Backdrop core. So does it make sense to have such a feature in core?
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Have you tried uc_cart_add_item()? You need to provide the nid of the product. Then you can use backdrop_goto('cart/checkout'); to send the user to the checkout screen. uc_cart_add_item...
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I could request hashing support, but that's the lazy way 🤣 I would appreciate it if you as an active maintainer would 'officially' add a hashing support...
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