> \once \override Score.BreakAlignment #'break-align-orders =
> #(make-vector 3 '( staff-bar
> clef
> span-bar
> breathing-sign
> ...
> key
> time-signature)),
>
> To insert the key change before the bar.
Thanks for the suggestion, but the key change must happen after the
bar line.
I think it is necessary to somehow keep the staff line alive – I guess
I can probably fake a solution by adding another bar with a suppressed
bar line that contains some invisible music. Not sure yet whether
this is sensible, and if yes, how to make the width of this extra bar
(almost) zero...
Werner