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bug#56682: Fix the long lines font locking related slowdowns
From: |
Eli Zaretskii |
Subject: |
bug#56682: Fix the long lines font locking related slowdowns |
Date: |
Mon, 01 Aug 2022 15:08:16 +0300 |
> Date: Mon, 1 Aug 2022 04:23:21 +0300
> Cc: 56682@debbugs.gnu.org, Eli Zaretskii <eliz@gnu.org>,
> Stefan Monnier <monnier@iro.umontreal.ca>
> From: Dmitry Gutov <dgutov@yandex.ru>
>
> IIUC this state of affairs is caused by your chosen approach to speeding
> up font-lock (hard narrowing while it is called), which makes the
> initial call to syntax-ppss happen inside that narrowing as well.
>
> The alternative being that font-lock would call syntax-ppss right away
> with no restriction, but then only apply highlighting to limited parts
> of the buffer.
AFAIU, this seems to assume that highlighting is much faster than
syntax-ppss. Is that a given? If not, I don't think I understand how
this could help.
> > It is way better to wait
> > a few seconds more while the file is being opened than to wait before
> > two basic motion commands when the file is already opened.
>
> I agree, yes.
I don't.
> > It doesn't only solve the syntax-ppss problem, it also makes
> > flyspell-mode usable in such files, for example.
>
> Does flyspell-mode always scan the full buffer?
flyspell-mode doesn't scan anything but the text you type, as you type
it. Anything else must be explicitly invoked by the user.
- bug#56682: Fix the long lines font locking related slowdowns, (continued)
- bug#56682: Fix the long lines font locking related slowdowns, Dmitry Gutov, 2022/08/01
- bug#56682: Fix the long lines font locking related slowdowns, Eli Zaretskii, 2022/08/01
- bug#56682: Fix the long lines font locking related slowdowns, Dmitry Gutov, 2022/08/02
- bug#56682: Fix the long lines font locking related slowdowns, Eli Zaretskii, 2022/08/02
- bug#56682: Fix the long lines font locking related slowdowns, Dmitry Gutov, 2022/08/03
- bug#56682: Fix the long lines font locking related slowdowns, Gregory Heytings, 2022/08/03
- bug#56682: Fix the long lines font locking related slowdowns, Dmitry Gutov, 2022/08/05
- bug#56682: Fix the long lines font locking related slowdowns, Eli Zaretskii, 2022/08/04
- bug#56682: Fix the long lines font locking related slowdowns, Stefan Monnier, 2022/08/02
bug#56682: Fix the long lines font locking related slowdowns, Stefan Monnier, 2022/08/02
bug#56682: Fix the long lines font locking related slowdowns,
Eli Zaretskii <=
- bug#56682: Fix the long lines font locking related slowdowns, Dmitry Gutov, 2022/08/01
- bug#56682: Fix the long lines font locking related slowdowns, Eli Zaretskii, 2022/08/02
- bug#56682: Fix the long lines font locking related slowdowns, Dmitry Gutov, 2022/08/02
- bug#56682: Fix the long lines font locking related slowdowns, Gregory Heytings, 2022/08/02
- bug#56682: Fix the long lines font locking related slowdowns, Stefan Monnier, 2022/08/02
bug#56682: Fix the long lines font locking related slowdowns, Eli Zaretskii, 2022/08/02
bug#56682: Fix the long lines font locking related slowdowns, Stefan Monnier, 2022/08/02
bug#56682: Fix the long lines font locking related slowdowns, Eli Zaretskii, 2022/08/02