> Quoting the specification of make-hashtable, which is normative:
>
>     Implementations using a hashing strategy that involves a single hash
>     function should ignore one of the functions in the pair when given a
>     pair of hash functions.
>
> That's all; it's unspecified which should be ignored.
Thanks! My eyes skipped reading the part you quoted. It's clearly said,
sorry for bothering.

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_/_/
Takashi Kato
E-mail: ktakashi19@gmail.com