I attached a patch. Feel free to edit (including the commit message --
I tried to mimic the format, I hope it's fine). This patch works fine
for me locally.

Best,
Tim

On Fri, 2020-12-11 at 21:33 +0100, Lars Ingebrigtsen wrote:
> Tim Ruffing <public@timruffing.de> writes:
> 
> > I think the proper thing to do is 
> >  - remove the ExecStop line (it's at least redundant and confusing)
> >  - add SuccessExitStatus=15 (to tell systemd that 15 is fine)
> 
> Thanks for the analysis of the situation.  This sounds like the right
> solution -- could you submit a patch for the emacs.service file? 
> Even
> if this sounds like an easy fix, I don't use systemd myself for
> Emacs,
> so I can't verify that the end result is correct (if I were to do the
> changes myself).
>