Stefan Monnier <monnier@iro.umontreal.ca> writes:

> Why not just replace (make-separator-line) with
> (if (fboundp 'make-separator-line) (make-separator-line) "")?
> `newline` is a command and I think it's preferable not to use it
> from ELisp.

Turns out that Compat supports this, so we don't need the check.

Here is the revised patch: