I have given you a detailed explanation of the minimum set of complexity that is required of a project to even hit such a problem.
And have showed you how that minimum set must include doing things that are considered bad practice.

All I got from you is just some handwave "I have this secret setup that doesn't work but I'm not going to actually show you".
Either show us the problem or bugger off.

-----Original Message-----
From: Ville Voutilainen <ville.voutilainen_at_gmail.com>
Sent: Monday, September 2, 2024 2:18 PM
To: Tiago Freire <tmiguelf_at_[hidden]m>
Cc: std-proposals_at_[hidden]; Tom Honermann <tom_at_honermann.net>
Subject: Re: [std-proposals] Revising #pragma once

On Mon, 2 Sept 2024 at 15:16, Tiago Freire <tmiguelf_at_hotmail.com> wrote:
>
> > Well, you're the one who keeps saying "you don't need this, you don't need that, keep it simple". And other people have pointed to real existing projects where that 'simple' approach doesn't work.
>
> So you keep saying. But I have seen 0 examples so far!

What difference does that make? You have read descriptions of such examples.