bug#51089: 28.0.60; Using read-symbol-shorthands (("-" . "foo-")) shouldn't shadow the '-' symbol

[Eli Zaretskii]

> From: João Távora <joaotavora@gmail.com>
> Date: Fri, 8 Oct 2021 15:02:32 +0100
> Cc: 51089@debbugs.gnu.org, Richard Stallman <rms@gnu.org>
> 
> what is 
> the easiest C-way of checking if every character is a multibyte string is 
> punctuation?  Call into Elisp?

No need to call into Lisp.  See alphanumericp and friends in
character.c for how to do it.  We need a new function like those.  I
will post the general categories of punctuation characters in a while.

Thanks.