Variable: font-lock-keywords-only
font-lock-keywords-only is a variable defined in font-lock.el.gz.
Value
nil
Documentation
Non-nil means Font Lock should not fontify comments or strings.
This is normally set via 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 font-lock-keywords-only nil
"Non-nil means Font Lock should not fontify comments or strings.
This is normally set via `font-lock-defaults'.")