Hello Paul, I can't give you a working example becauae I am not at home, but you might simply override BarLine.stencil. Override it with a function that uses ly:stencil-combine-at-edges to tie a suitable stencil to (ly:barline::print grob). You might need to mess a bit with the dimensions of that stencil and the padding for the barline.
Cheers, Valentin 22.08.2021 13:42:25 Paul Hodges <p...@cassland.org>: > Encouraged by the fantastic responses to my first problem, I now offer my > other issue. > > The composer uses a special barline to mark the phrase pattern of a piece. > The form of this barline is like this: > (MS) https://cassland.org/images/PhraseBarMS.jpg > (Printed elsewhere) https://cassland.org/images/PhraseBarSet.jpg > > In this case I can't even think where to start... > > Thanks, > Paul