Re: Adding the `prescient` packages to NonGNU ELPA?

[Stefan Monnier]

> Would you please explain why one would want to use `add-function`
> instead of directly setting `corfu-sort-function`, since setting the
> variable is the intended use? Do you think that storing the old value is
> insufficient?

Two main reasons:
- It's simpler (less code).
- It has a chance of working correctly if some other package also comes
  and installs its own function there.

> Also, you suggest using `message` to warn that `corfu` isn't found.
> Would use of the function `user-error` be incorrect for this?

Either way seems fine.


        Stefan