[m-rev.] for review: avoid instances containing cluases in the io module

[Julien Fischer]

On Mon, 12 Feb 2024, Zoltan Somogyi wrote:

> On 2024-02-12 20:50 +11:00 AEDT, "Julien Fischer" <jfischer at opturion.com> wrote:
>> In the absence of any review comments, I will commit this one later this
>> evening.
>
> Go ahead and commit; I will take a look later tonight.

Thanks -- the only thing worth reviewing is the names of the new
predicates; the rest is trivial.

Julien.