>> { <e' c''>2\glissando <d' bes'> }
>>
>> Due to the flat, the lower glissando line is far too short.
>>
>> beyond my capabilities right now. Is there a solution to
>> circumvent this temporarily?
>
> %%%%
> \version "2.20.0"
>
> {
> \override Glissando.before-line-breaking =
> #(lambda (grob)
> (let* ((nh (ly:spanner-bound grob RIGHT))
> (acc (ly:grob-object nh 'accidental-grob)))
> (ly:grob-set-nested-property!
> grob
> '(bound-details right end-on-accidental)
> (ly:grob? acc))))
>
> <e' c''>2\glissando <d' bes'>
> }
> %%%%
Very nice, thanks! The only thing now is to get the two lines
parallel, which looks like a lot of additional work...
Werner