Ah, that is weird. Obviously, I have tested it (although, clearly, not
correctly) before creating the issue.
But indeed I can not reproduce it. I am quite sure that I got some 'non
existing buffer' message when
using `switch-to-buffer` somewhere (don't remember exactly where), and
again, then I remember to have
tested it before creating the issue (testing it, in this case, is of course
much less work than creating the issue).

Well, I don't understand what caused me to draw this conclusion (I hope
that I will encounter it again to
investigate it)

Anyway, sorry for spamming the mailing list, and thank you for checking
it...

On Tue, 12 Apr 2022 at 01:52, Drew Adams <drew.adams@oracle.com> wrote:

> > "If BUFFER-OR-NAME is a string that does not identify an
> > existing buffer, create a buffer with that name."
> >
> > However, this is only true when called interactively.
>
> How so?  Seems to be true when called from Lisp also,
> AFAICT.
>
>