bug#67536: 29.1; Calc mode's math-read-preprocess-string conses unnecessarily

[Eli Zaretskii]

> From: Raffael Stocker <r.stocker@mnet-mail.de>
> Cc: 67536@debbugs.gnu.org
> Date: Fri, 01 Dec 2023 22:10:22 +0100
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> >> I use cl-flet and (eval-when-compile (require 'cl-lib)).  I hope that is
> >> ok.
> >
> > I'd prefer a simple internal function, or a lambda.
> 
> I went with the lambda, it is the more concise choice.
> 
> >> +      (buffer-string))))
> >
> > I think buffer-substring-no-properties would be better than
> > buffer-string, as we don't need to copy any text properties, right?
> 
> Yes, indeed.  I fixed that too.

Thanks.

Mattias, any comments, or should I install this?