On Tue, 3 Aug 2021 at 12:47, Baruch Burstein via Std-Proposals
<std-proposals_at_[hidden]> wrote:
>
> Hi.
> Why is there no generic scope guard in the standard library?
> I am sure there must have been such a proposal before, probably with an explanation of why it was not accepted, but I couldn't find it.

It hasn't progressed beyond Library Fundamentals:
http://open-std.org/JTC1/SC22/WG21/docs/papers/2020/n4873.html#scopeguard