Am Mittwoch 21 Dezember 2016 schrieb Thierry de Coulon:
> On Wednesday 21 December 2016 14.01:08 Michele Calgaro wrote:
> > The default session is actually hardwired in Kate's code (up to R14.0.x
> > series). Even if you delete it, it will be recreated.
> > Cheers
> >   Michele
>
> I haven't looked at the code, but it seems so far that if I create (save) a
> session with my settings, then delete the default session and rename the
> saved one to default, it works (so I'd guess the code checks for
> default.katesession and only recreates it if missing).
>
> Thierry
>
I think so either, because this still works from program interface as said 
before (I just tried again in a completely new TDE user account):

1) open kate the first time with a new, empty session directory

2) close the documents list (and/or side bar), save the session.
  There is only "Default session", so the running session, which is the default
  session, will be saved as default.session in kate/sessions/ (would be saved in
  default.session anyway, but without your changes)

3) next time you start kate, it will find default.session with your saved
  changes concerning the view of docs list/side bar.

BUT: still strange is, that the second time I tried that, kate would not let me 
save the freshly opened session, but popped up a dialog to enter a name for the 
session to save. I then "opened" from within kate "Default session" (the only 
one in the list), which did not (!) revert to opened docs list/side bar, and 
after that I could save the session as is, that is, default.session. And this 
file apparently will be found kate starts the next.

Stefan