bug#16567: 24.3.50; pcase should signal an error if no case matches

[Stefan Monnier]

>> For now, pcase-exhaustive is still a better choice.
>> A quick grep shows that most first args to pcase are rather short, so
>> the line-length argument is not very compelling.
> OK, let's go with `pcase-exhaustive' for now. Any objection if we also
> make an short alias to it for the convenience of people that know they
> want the exhaustive version most of the time?

No, I'd rather wait to see if it's really used that often.  If it turns
out to be popular, we can then add a shorter version.


        Stefan