Re: Why does using aset sometimes output raw bytes?

[Eli Zaretskii]

> From: Stephen Berman <stephen.berman@gmx.net>
> Cc: help-gnu-emacs@gnu.org
> Date: Sun, 09 Dec 2018 19:50:08 +0100
> 
> I was experimenting with aset to make random permutations of a string
> and didn't understand why there were sometimes raw bytes in the result
> (which also led to args-out-of-range errors), but using (make-string len
> 128) as the container for the permutations prevents that.  And with your
> above explanations I now think I understand why.

Yes, you need to start with a multibyte string to do this kind of
thing safely.