Re: `aset` on strings, changing the size in bytes

[Paul Eggert]

Johan Bockgård wrote:
> According to the documentation, that is already an error...
>
> (info "(elisp) Modifying Strings")

Cool! That means we can do Stefan's request simply by reverting Kenichi Handa's 
patch that introduced the ability to change the byte length of a string (commit 
3c9de1afcde82a99137721436c822059cce79b5b dated 2000-07-21 06:45:30 UTC), since 
that patch made the code explicitly disagree with the documentation. Though this 
leaves open the question of why Handa made that change in the first place.