On Friday, June 6th, 2025 at 8:12 AM, Zhao YunShan via Std-Proposals <std-proposals@lists.isocpp.org> wrote:

From: Zhihao Yuan <zy_at_[hidden]>
Date: Tue, 20 May 2025 17:28:47 +0000

> Are you looking for https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3627.html ?

This paper is from 2013, and 12 years have passed since then. 

When does the "future" become true?

That's a question for you :)