On Sat, Jun 13, 2020 at 02:31:52PM +0000, Gregory Heytings wrote:
> 
> Dear List,
> 
> I've now been using Emacs for many, many years, and there is perhaps
> a single feature I'm really missing, namely opening more than one
> file in a single buffer, with the contents of the files appearing
> one after the other in the same buffer, with some kind of visual
> separator between them. I don't know if that feature exists in other
> text editors.

Would "insert-file" (bound to C-x i) do what you want?

Cheers
-- t