From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Eli Zaretskii <eliz@gnu.org>
Cc: acm@muc.de, emacs-devel@gnu.org, dgutov@yandex.ru
Subject: Re: master 7362554: Widen around c-font-lock-fontify-region. This fixes bug #38049.
Date: Fri, 15 Nov 2019 18:27:21 -0500 [thread overview]
Message-ID: <jwveey8d8nw.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <83r22932if.fsf@gnu.org> (Eli Zaretskii's message of "Fri, 15 Nov 2019 11:36:08 +0200")
>> IIUC this can't be fixed in font-lock or jit-lock.
> Why not?
Good question. Looks like I was wrong.
I think the patch below is a better general solution.
Stefan
diff --git a/lisp/font-lock.el b/lisp/font-lock.el
index 01c19e6e87..9c1c193eda 100644
--- a/lisp/font-lock.el
+++ b/lisp/font-lock.el
@@ -1071,7 +1071,9 @@ font-lock-fontify-region
If LOUDLY is non-nil, print status messages while fontifying.
This works by calling `font-lock-fontify-region-function'."
(font-lock-set-defaults)
- (funcall font-lock-fontify-region-function beg end loudly))
+ (save-restriction
+ (unless font-lock-dont-widen (widen))
+ (funcall font-lock-fontify-region-function beg end loudly)))
(defun font-lock-unfontify-region (beg end)
"Unfontify the text between BEG and END.
@@ -1221,8 +1221,6 @@
(save-buffer-state
;; Use the fontification syntax table, if any.
(with-syntax-table (or font-lock-syntax-table (syntax-table))
- (save-restriction
- (unless font-lock-dont-widen (widen))
;; Extend the region to fontify so that it starts and ends at
;; safe places.
(let ((funs font-lock-extend-region-functions)
@@ -1251,7 +1249,7 @@
(unless font-lock-keywords-only
(font-lock-fontify-syntactically-region beg end loudly))
(font-lock-fontify-keywords-region beg end loudly)
- `(jit-lock-bounds ,beg . ,end)))))
+ `(jit-lock-bounds ,beg . ,end))))
;; The following must be rethought, since keywords can override fontification.
;; ;; Now scan for keywords, but not if we are inside a comment now.
next prev parent reply other threads:[~2019-11-15 23:27 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20191109144026.20810.76129@vcs0.savannah.gnu.org>
[not found] ` <20191109144027.DDC3720927@vcs0.savannah.gnu.org>
2019-11-11 16:52 ` master 7362554: Widen around c-font-lock-fontify-region. This fixes bug #38049 Dmitry Gutov
2019-11-11 20:34 ` Alan Mackenzie
2019-11-12 13:36 ` Dmitry Gutov
2019-11-13 21:19 ` Alan Mackenzie
2019-11-13 22:33 ` Dmitry Gutov
2019-11-14 13:42 ` Stefan Monnier
2019-11-14 14:05 ` Dmitry Gutov
2019-11-14 14:29 ` Eli Zaretskii
2019-11-14 14:35 ` Dmitry Gutov
2019-11-14 14:48 ` Eli Zaretskii
2019-11-14 14:50 ` Dmitry Gutov
2019-11-14 16:08 ` Eli Zaretskii
2019-11-14 21:07 ` Dmitry Gutov
2019-11-15 9:31 ` Eli Zaretskii
2019-11-15 10:24 ` Dmitry Gutov
2019-11-15 13:00 ` Eli Zaretskii
2019-11-14 13:49 ` Eli Zaretskii
2019-11-14 14:08 ` Dmitry Gutov
2019-11-14 14:37 ` Dmitry Gutov
2019-11-14 14:55 ` Stefan Monnier
2019-11-14 15:02 ` Dmitry Gutov
2019-11-14 15:33 ` Stefan Monnier
2019-11-14 16:12 ` Eli Zaretskii
2019-11-14 18:51 ` Stefan Monnier
2019-11-14 19:19 ` Eli Zaretskii
2019-11-14 19:48 ` Dmitry Gutov
2019-11-14 19:56 ` Eli Zaretskii
2019-11-14 19:59 ` Dmitry Gutov
2019-11-15 7:34 ` Eli Zaretskii
2019-11-15 7:52 ` Dmitry Gutov
2019-11-14 21:29 ` Stefan Monnier
2019-11-14 21:46 ` Dmitry Gutov
2019-11-15 9:36 ` Eli Zaretskii
2019-11-15 10:26 ` Dmitry Gutov
2019-11-15 23:27 ` Stefan Monnier [this message]
2019-11-16 8:02 ` Eli Zaretskii
2019-11-17 0:50 ` Stefan Monnier
2019-11-17 3:33 ` Eli Zaretskii
2019-11-17 7:36 ` Dmitry Gutov
2019-11-17 15:44 ` Eli Zaretskii
2019-11-17 17:59 ` Dmitry Gutov
2019-11-17 18:26 ` Eli Zaretskii
2019-11-17 18:35 ` Dmitry Gutov
2019-11-14 19:58 ` Dmitry Gutov
2019-11-14 21:24 ` Several Major Modes. [Was: master 7362554: Widen around c-font-lock-fontify-region. This fixes bug #38049.] Alan Mackenzie
2019-11-14 22:11 ` Dmitry Gutov
2019-11-15 20:10 ` Several Major Modes Alan Mackenzie
2019-11-15 21:45 ` Dmitry Gutov
2019-11-16 13:10 ` Alan Mackenzie
2019-11-17 12:48 ` Dmitry Gutov
2019-11-17 16:03 ` Alan Mackenzie
2019-11-17 21:56 ` Dmitry Gutov
2019-11-14 13:35 ` master 7362554: Widen around c-font-lock-fontify-region. This fixes bug #38049 Eli Zaretskii
2019-11-15 22:43 ` Dmitry Gutov
2019-11-14 12:02 ` Eli Zaretskii
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