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Re: Partly deferred font-locking?
From: |
Ihor Radchenko |
Subject: |
Re: Partly deferred font-locking? |
Date: |
Thu, 12 Jan 2023 15:40:51 +0000 |
Eli Zaretskii <eliz@gnu.org> writes:
> My point is that when you call an expensive calculation inside
> while-no-input, you are entirely at the mercy of the code run by the
> body of while-no-input, wrt how soon after a keypress will
> while-no-input be interrupted. And since Michael was asking precisely
> about such situations, I commented that it _might_ make Emacs less
> responsive.
I'd say that the chances are slim. Primitives like `funcall_lambda',
`if', and `when' are all calling `maybe_quit'. So, pretty much any Lisp
code will trigger interruption.
The exceptions are subroutines and external library calls, but most of
the subroutines are also sparkled with maybe_quit.
I think that it is a reasonable assumption that Emacs will not block
inside `while-no-input' in the overwhelming majority of real-world
scenarios. Exceptions are possible, but should not be a blocker - few
exceptions are much better with the current stable inflow of font-lock
performance complaints that are coming from inefficient or buggy
font-lock code in third-party packages.
--
Ihor Radchenko // yantar92,
Org mode contributor,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>
- Re: Partly deferred font-locking?, (continued)
- Re: Partly deferred font-locking?, Eli Zaretskii, 2023/01/11
- Re: Partly deferred font-locking?, Michael Heerdegen, 2023/01/12
- Re: Partly deferred font-locking?, Eli Zaretskii, 2023/01/12
- Re: Partly deferred font-locking?, Michael Heerdegen, 2023/01/12
- Re: Partly deferred font-locking?, Eli Zaretskii, 2023/01/12
- Re: Partly deferred font-locking?, Ihor Radchenko, 2023/01/12
- Re: Partly deferred font-locking?, Ihor Radchenko, 2023/01/12
- Re: Partly deferred font-locking?, Eli Zaretskii, 2023/01/12
- Re: Partly deferred font-locking?, Ihor Radchenko, 2023/01/12
- Re: Partly deferred font-locking?, Eli Zaretskii, 2023/01/12
- Re: Partly deferred font-locking?,
Ihor Radchenko <=
- Re: Partly deferred font-locking?, Eli Zaretskii, 2023/01/12
- Re: Partly deferred font-locking?, Ihor Radchenko, 2023/01/12
- Re: Partly deferred font-locking?, Michael Heerdegen, 2023/01/12
- Re: Partly deferred font-locking?, Michael Heerdegen, 2023/01/12
- Re: Partly deferred font-locking?, Eli Zaretskii, 2023/01/12
- Re: Partly deferred font-locking?, Michael Heerdegen, 2023/01/12