bug#64075: 28.2; ispell broken on uncolored terminals

[Eli Zaretskii]

> Cc: 64075@debbugs.gnu.org
> Date: Wed, 14 Jun 2023 23:25:10 +0000
> From: Gregory Heytings <gregory@heytings.org>
> 
> > emacs-28.2 -Q -nw --color=no
> > s t o n k s M-$ 1
> >
> > At this point, I expect to see the word "stonks" replaced with "stocks", 
> > but it is instead replaced with "stockstonks".
> > 
> > The problem seems to be in ispell-highlight-spelling-error-generic, a 
> > 20th-century kludge from before face support for ttys was added in 
> > emacs-21 in 2001.  It's been unnecessary since then, and it looks like 
> > it's been breaking ispell on colorless ttys since at least emacs-23.
> >
> 
> This recipe can be reproduced with Emacs 25, 26, 27 and 28... but not with 
> Emacs 29, in which "stonks" is indeed replaced with "stocks".

Yes, see bug#56219.