Variable: flyspell-case-fold-duplications
flyspell-case-fold-duplications is a customizable variable defined in
flyspell.el.gz.
Value
t
Documentation
Non-nil means Flyspell matches duplicate words case-insensitively.
This variable was added, or its default value changed, in Emacs 27.1.
Probably introduced at or before Emacs version 27.1.
Source Code
;; Defined in /usr/src/emacs/lisp/textmodes/flyspell.el.gz
(defcustom flyspell-case-fold-duplications t
"Non-nil means Flyspell matches duplicate words case-insensitively."
:type 'boolean
:version "27.1")