Re: Ugly regexps

[Eli Zaretskii]

> From: Stefan Kangas <stefankangas@gmail.com>
> Date: Tue, 2 Mar 2021 20:08:53 -0600
> 
>     https://lists.gnu.org/archive/html/emacs-devel/2012-01/msg00736.html
> 
> Long story short, it may be a non-trivial job.  In particular supporting
> the \s and \c operators seems like a hard nut to crack.

Yes.  But I think supporting non-ASCII characters is also not easy,
and the main reason we still don't use Gnulib's regexp code in Emacs.

Another worthy goal, if we are talking about this, is to support more
of the Unicode Regular Expressions, at least at the functional level,
if not syntactically.  See https://unicode.org/reports/tr18/ for the
details.