Subject: perl-mode warns about mismatched parentheses wrongly

From: 積丹尼 Dan Jacobson <[email-masked]>
Date: Tue, 08 Dec 2020 13:45:03 +0800

$ emacs file.pl # and start typing
if(/^[^}]/) ...

During the process you will get spurious warnings about mismatched
parentheses etc.

emacs-version "27.1"