bug#72296: 29.4; cperl-mode parsing error

[Andrea Corallo]

Eli Zaretskii <eliz@gnu.org> writes:

>> Cc: 72296@debbugs.gnu.org
>> From: Andrea Corallo <acorallo@gnu.org>
>> Date: Thu, 25 Jul 2024 13:01:30 -0400
>> 
>> 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.
>
> I can reproduce on master.  Be sure to invoke cperl-mode, and type
> exactly the text the OP shows.

So I do but can't reproduce, I must be doing something wrong sorry 🤷