"at" and "atm" are still considered the same

Hello,

Taking a look at https://docs.oasis-open.org/office/OpenDocument/v1.3/csprd01/part4-formula/OpenDocument-v1.3-csprd01-part4-formula.html, it seems "at" and "atm" are still considered equivalent where it's not the case, see https://issues.oasis-open.org/browse/OFFICE-3851.

I'm contributing a bit to LibreOffice and am still angry against choice made in https://bugs.documentfoundation.org/show_bug.cgi?id=72174. I thought that Oasis standard will change after some years, but it seems it won't be the case.

Must we really mimic Excel because some consider interopability a priority until implementing their bugs too?
IMHO, it's just wrong since it doesn't respect Physics standards. Quite confusing when we're making another standard.

Regards,

Julien Nabet