Re: how to force auto-save of buffers not visiting files, right now?

[hw]

On Mon, 2022-03-14 at 14:48 +0200, Eli Zaretskii wrote:
> > From: hw <hw@adminart.net>
> > Date: Mon, 14 Mar 2022 05:55:34 +0100
> > 
> > how do I force auto-saving of a particular buffer, or of all buffers,
> > that are not visiting a file, right now?
> 
> "M-x do-auto-save RET"
> 
> As for buffers not visiting files: you should set that up separately,
> e.g. by turning on the auto-save-mode in those buffers (manually or
> otherwise).
> 

Yes, and how do I make it so that a buffer not visiting a file is
being auto-saved without delay once the auto-save-mode has been
enabled?  Or can I make it auto-save once before enabling auto-save
mode?