Variable: gnus-sum-opening-bracket
gnus-sum-opening-bracket is a customizable variable defined in
gnus-sum.el.gz.
Value
"["
Documentation
With %[ spec, used to identify normal (non-adopted) articles.
This variable was added, or its default value changed, in Emacs 28.1.
Probably introduced at or before Emacs version 28.1.
Source Code
;; Defined in /usr/src/emacs/lisp/gnus/gnus-sum.el.gz
(defcustom gnus-sum-opening-bracket "["
"With %[ spec, used to identify normal (non-adopted) articles."
:version "28.1"
:type 'string
:group 'gnus-summary-format)