On 5/6/2025 3:09 AM, Andre Kostur via SG14 wrote:
> I’ll have to defer to other people who are more knowledgeable, but as I
> recall, we had to wait until we were in the appropriate ISO groups to
> join this mailing list. Also, wasn’t there a recent concern about
> something posted to the SG23 list that became public?
>
> On Mon, May 5, 2025 at 6:03 PM Khalil Estell via SG14
> <sg14_at_[hidden] <mailto:sg14_at_[hidden]>> wrote:
>
> Procedural question, am I allowed to add non committee people to
> these threads. I didn't initially because I was waiting for a
> response to this question from someone else.
>

SG14 is special here in that it is explicitly open to participation from
non-committee people. SG14's mailing list is public and anyone can sign
up. The mailing list archives are openly accessible at
  https://lists.isocpp.org/sg14/
So you won't make any information public that wasn't public before. Be
aware though that if you Cc people that are not on the list, their
replies will not get forwarded to the list.

For the other WG21 subgroups though, Andre is correct that it is usually
not advisable to Cc non-committee members, as posts to those lists are
non-public.

Best regards,
Andreas