bug#72296: 29.4; cperl-mode parsing error

[Andrea Corallo]

brian <me@briang.org> writes:

> I started emacs using 'emacs -Q /tmp/some-empty-file.pl' and activated
> cperl mode by 'M-x cperl-mode'. I typed 'for (2..$n/2) {}' into the
> empty buffer and as soon as I pressed '/' there was an error message in
> the minibuffer
>
> End of ‘/ ... /’ string/RE not found: (scan-error Unbalanced
> parentheses 11 38)
>
> and syntax hilighting was broken. Inserting a single space before '$'
> cleared the error and fixed the hilighting.
>
>
>
> In GNU Emacs 29.4 (build 2, x86_64-pc-linux-gnu, GTK+ Version 3.24.38,
> cairo version 1.18.0) of 2024-06-24 built on dev
> Windowing system distributor 'The X.Org Foundation', version 11.0.12302000
> System Description: Ubuntu 23.10

I might be doing something wrong but I cannot reproduce on emacs-30,
could you confirm?  29 is not under development anymore.

  Andrea