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From: Eli Zaretskii <eliz@gnu.org>
To: Dmitry Gutov <dmitry@gutov.dev>
Cc: jdtsmith@gmail.com, emacs-devel@gnu.org
Subject: Re: region-based face-remapping
Date: Fri, 05 Jan 2024 10:50:21 +0200	[thread overview]
Message-ID: <834jfsw4du.fsf@gnu.org> (raw)
In-Reply-To: <1cb0b482-1149-4695-9345-a495418da7f9@gutov.dev> (message from Dmitry Gutov on Fri, 5 Jan 2024 05:49:24 +0200)

> Date: Fri, 5 Jan 2024 05:49:24 +0200
> Cc: jdtsmith@gmail.com, emacs-devel@gnu.org
> From: Dmitry Gutov <dmitry@gutov.dev>
> 
> On 04/01/2024 09:05, Eli Zaretskii wrote:
> >    . one of the subroutines of face_at_buffer_position calls some Lisp
> >      hook
> >    . that Lisp hook calls code that calls face-font (or some other
> >      primitive which takes face-remapping-alist into account)
> 
> Could you give an example of a Lisp hook which might be called from 
> face_at_buffer_position's subroutines?

Why is having a specific example important?

Are you saying that there can never be such an example?  With the
current tendency of moving stuff to Lisp and adding hooks to C code,
we clearly cannot convince ourselves such a hook will never happen in
the future, even if it doesn't exist in this particular moment in
time.  Assumptions that certain things "cannot happen" between points
A and B in display code already led to tricky bugs that needed tricky
solutions.  Thus, I don't want to design a new feature on such shaky
assumptions.



  reply	other threads:[~2024-01-05  8:50 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-01-02  0:22 region-based face-remapping JD Smith
2024-01-02 13:00 ` Eli Zaretskii
2024-01-02 15:49   ` JD Smith
2024-01-03 12:31     ` Eli Zaretskii
2024-01-03 12:40       ` Dmitry Gutov
2024-01-03 13:42         ` Eli Zaretskii
2024-01-04  0:07           ` Dmitry Gutov
2024-01-04  7:05             ` Eli Zaretskii
2024-01-05  3:49               ` Dmitry Gutov
2024-01-05  8:50                 ` Eli Zaretskii [this message]
2024-01-05 14:18                   ` Dmitry Gutov
2024-01-05 14:34                     ` Eli Zaretskii
2024-01-05 16:25                       ` Dmitry Gutov
2024-01-03 23:15       ` JD Smith
2024-01-04  6:58         ` Eli Zaretskii
2024-01-05  0:51           ` JD Smith
2024-01-05  8:19             ` Eli Zaretskii
2024-01-05 16:35               ` Dmitry Gutov
2024-01-06 14:04                 ` JD Smith
2024-01-06 13:53               ` JD Smith
2024-01-06 14:27                 ` Eli Zaretskii
2024-01-06 14:56                   ` JD Smith
2024-01-08 17:28                     ` Eli Zaretskii
2024-01-07  3:41                 ` Dmitry Gutov
2024-01-15 19:55     ` Stefan Monnier via Emacs development discussions.
2024-01-15 20:19       ` Eli Zaretskii
2024-01-15 20:25         ` Eli Zaretskii
2024-01-15 20:36         ` Stefan Monnier
  -- strict thread matches above, loose matches on Subject: below --
2024-01-08 21:49 JD Smith
2024-01-09 13:03 ` Eli Zaretskii
2024-01-09 14:15   ` Stefan Monnier
2024-01-09 20:20     ` JD Smith
2024-01-10 12:36       ` Eli Zaretskii
2024-01-09 20:20     ` JD Smith
2024-01-15 20:17       ` Stefan Monnier via Emacs development discussions.
2024-01-09 21:31   ` JD Smith
2024-01-10 12:44     ` Eli Zaretskii

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