Thank you for your reply. I noticed the difference only in the
definition in GNU Guile, except for the Chibi-Scheme implementation
reported before, although it seems to be practically equivalent to the
reference implementation. Here is a gist code which has reduce-right
definitions in some Scheme implementations arranged by me to same
variables and indents:
https://gist.github.com/ytaki0801/4ce2f5390e265b0bb11970a19f3ee7df

--
TAKIZAWA Yozo

2022-01-09 Sun 1:47 Arthur A. Gleckler <xxxxxx@speechcode.com>:
>
> On Tue, Dec 28, 2021 at 12:50 AM TAKIZAWA Yozo <xxxxxx@nbk.bz> wrote:
>>
>> Although this is not a specification topic but implementation, I send
>> it to the list as a related issue to confirm or clarify.
>
>
> Thanks for the question.  Would you mind showing some examples to make the question clearer?  It would be great if you could show examples that differ between Scheme implementations.
>
> Thanks, and happy new year.