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Re: compute ISBN-10, char-to-int?

From: Stefan Monnier
Subject: Re: compute ISBN-10, char-to-int?
Date: Sat, 07 Sep 2019 13:45:35 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

> All true, but not really relevant to the issue at hand, because in
> Emacs characters are always Unicode codepoints.

That hasn't always been the case, tho: they started as basically ASCII,
and then switched to some iso-2022 system (in Emacs-20) before getting
to the current unicode (in Emacs-23).

I must admit that it seems highly unlikely it will change in the
foreseeable future, but it's always a possibility (Unicode has its
shortcomings, so it's possible that we'll be using something else next


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