Subject: bug#47993: curious color switching when adding characters in perl-mode

From: 積丹尼 Dan Jacobson <[email-masked]>
Date: Sat, 24 Apr 2021 06:09:04 +0800

Interesting, for each p I type, they all change color...
for (@m){
    /[[:uppppppppppppppp

perl-mode, emacs-version "27.1"