On 4/9/24 15:57, Stefan Monnier via Bug reports for GNU Emacs, the Swiss 
army knife of text editors wrote:
>> -            (lambda (form) (keymap--compile-check from to) form)))
>> +            (lambda (form) (keymap--compile-check from (if to to nil)) form)))
>                                                            ^^^^^^^^^^^^^^
>
> ??
>
> Just like (and to to), this is just a complicated way to say `to`.
> What is the underlying idea?

I was trying to pass nil to keymap--compile-check but I was complicating 
this for no reason. Reverted it completely, apologies.