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

[Eli Zaretskii]

> Date: Thu, 5 Sep 2019 08:44:37 +0200
> From: <tomas@tuxteam.de>
> 
> [...] since chars in Emacs Lisp are simply integers, and since
> encoding is almost-UTF-8 which is basically ASCII [...]

Actually, encoding is not relevant here.  We are not talking about how
characters are stored in buffers and strings, we are talking about the
characters themselves.  A character is represented by an integer whose
value is that character's Unicode codepoint.