GNU bug report logs - #79009
[PATCH] Improve 'vtable' object handling, cache handling, messages

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From: Visuwesh <visuweshm <at> gmail.com>
To: Stéphane Marks <shipmints <at> gmail.com>
Cc: Spencer Baugh <sbaugh <at> janestreet.com>, Kristoffer Balintona <krisbalintona <at> gmail.com>, Joost Kremers <joostkremers <at> fastmail.fm>, 79009 <at> debbugs.gnu.org, Adam Porter <adam <at> alphapapa.net>, Lars Ingebrigtsen <larsi <at> gnus.org>, Augusto Stoffel <arstoffel <at> gmail.com>, ijqq <at> protonmail.com
Subject: bug#79009: [PATCH] Improve 'vtable' object handling, cache handling, messages, [PATCH] Improve 'vtable' object handling, cache handling, messages
Date: Tue, 15 Jul 2025 21:11:25 +0530

[செவ்வாய் ஜூலை 15, 2025] Stéphane Marks wrote:

> On Mon, Jul 14, 2025 at 3:54 PM Spencer Baugh <sbaugh <at> janestreet.com> wrote:
>
>> Stéphane Marks <shipmints <at> gmail.com> writes:
>> > On Sun, Jul 13, 2025 at 2:16 PM Stéphane Marks <shipmints <at> gmail.com>
>> wrote:
>> > I've updated the broader vtable update in the referenced 78843 bug to
>> check out if interested.
>> >
>> > I've removed support for the duplicate-object feature.  After careful
>> consideration, it was half baked and I think better for vtable
>> > programmers to handle their own objects.  I will be sure the
>> documentation stresses to avoid duplicate objects as vtable's design is
>> > predicated on unique objects (or race conditions ensue among duplicate
>> object references).
>>
>> Thank you, this was going to be my first bit of feedback.
>>
>> Folowup question: What is the motivation for adding customizable object
>> equality?  Could the need for that be avoided by some changes specific
>> to vtable-update-object?
>>
>
> It's really a policy question and future proofing.  I believe Lars
> originated this idea and probably has use cases for this in his vtable code.

This question came up in emacs-devel once before: https://yhetil.org/emacs-devel/CANVbq5kjPpCKwMBSYfHHLMFXAX7vAgy+D=uLAwJoTGQ5cLSjFQ <at> mail.gmail.com

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