I still think that signaling an error is wrong (and against the spirit
of the R[67]RS exceptions).  See here:
https://srfi-email.schemers.org/srfi-234/msg/20488634/.

Am Mi., 30. Nov. 2022 um 13:24 Uhr schrieb Amirouche <xxxxxx@hyper.dev>:
>
> ------- Original Message -------
> On Tuesday, November 22nd, 2022 at 12:26, Shiro Kawai <xxxxxx@gmail.com> wrote:
>
>
> > Shouldn't the specification of the error object 'circular-graph' be in the srfi text?
>
>
> Indeed, the following procedures are exported, but not part of the spec:
>
>
> circular-graph?
>
> circular-graph-message
>
> circular-graph-cycle