On 1/23/20 7:17 PM, Paul W. Rankin wrote:
> The relationship doesn't appear as the same as on GNU/Linux.

It's similar, in that one can launch apps in various ways (e.g., via Gnome) 
without involving shell environment variables.

Looking into this a bit more, I see that Alan Third wrote a fix for this problem 
(which is apparently quite a zoo in macOS, as Apple keeps changing how to set 
environment variables!) into Emacs in master commit 
2016-02-11T02:26:50Z!alan@idiocy.org. However, Emacs currently sets the LANG 
environment variable in ns_init_locale *after* Emacs uses LANG to set the 
LC_TIME locale, which is not what is wanted here. So, please try the attached 
patch to master. You'll need to grab the latest master as I recently installed a 
locale cleanup patch while looking into this mess.

If this patch doesn't work for you, perhaps you can write a small variant of it 
that does work.