Variable: font-lock-keywords-case-fold-search
font-lock-keywords-case-fold-search is a buffer-local variable defined
in font-lock.el.gz.
Documentation
Non-nil means the patterns in font-lock-keywords are case-insensitive.
This is set via the function font-lock-set-defaults(var)/font-lock-set-defaults(fun), based on
the CASE-FOLD argument of font-lock-defaults.
Probably introduced at or before Emacs version 19.30.
Source Code
;; Defined in /usr/src/emacs/lisp/font-lock.el.gz
(defvar-local font-lock-keywords-case-fold-search nil
"Non-nil means the patterns in `font-lock-keywords' are case-insensitive.
This is set via the function `font-lock-set-defaults', based on
the CASE-FOLD argument of `font-lock-defaults'.")