bug#58168: string-lessp glitches and inconsistencies

[Eli Zaretskii]

> From: Mattias Engdegård <mattias.engdegard@gmail.com>
> Date: Sat, 1 Oct 2022 15:37:25 +0200
> Cc: 58168@debbugs.gnu.org,
>  Eli Zaretskii <eliz@gnu.org>
> 
> > Funnily enough, the latter displays in a different way for me, which may
> > or may not be a bug:
> > 
> > This is with `display-raw-bytes-as-hex' t.
> 
> You are right, that is completely broken -- display-raw-bytes-as-hex 
> shouldn't affect the display of C1 controls.

I think the variable is a misnomer of sorts: the request back when it
was introduced to display hex where we usually display octal \nnn
escapes.  And the latter happens not only for raw bytes.

> It seems to be a relic from the pre-Unicode days of Emacs: the code 
> responsible muddles the display of raw bytes and unicode controls.

No, I think we decided to keep the display of C1 characters as octal
escapes.