Eli Zaretskii <eliz@gnu.org> writes:

> Sorry, I needed to revert that, because these changes failed the
> bootstrap.
>
> We cannot call define-minor-mode in bindings.el, because bindings.el
> is loaded by loadup.el before loaddefs.el, and so define-minor-mode is
> not yet known as an autoloaded macro.
>
> One solution is to move the code to simple.el instead.

Fine, I've moved it to simple.el, see patch below: