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Diffstat (limited to 'lisp/font-lock.el')
| -rw-r--r-- | lisp/font-lock.el | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lisp/font-lock.el b/lisp/font-lock.el index 083bfb8626b..d8a1fe399b6 100644 --- a/lisp/font-lock.el +++ b/lisp/font-lock.el @@ -1906,8 +1906,9 @@ preserve `hi-lock-mode' highlighting patterns." Sets various variables using `font-lock-defaults' and `font-lock-maximum-decoration'." ;; Set fontification defaults if not previously set for correct major mode. - (unless (and font-lock-set-defaults - (eq font-lock-major-mode major-mode)) + (when (or (not font-lock-set-defaults) + (not font-lock-major-mode) + (not (derived-mode-p font-lock-major-mode))) (setq font-lock-major-mode major-mode) (setq font-lock-set-defaults t) (let* ((defaults font-lock-defaults) |