Paul Morris <paul <at> paulwmorris.com> writes: > > > On Feb 16, 2016, at 8:35 AM, Paul Booker <Paul <at> homebass.net> wrote: > > > > I've only narrowed the problem down to the function > > Hi Paul, Can you send a full but tiny example that we can run/test with LilyPond? See: > > http://lilypond.org/tiny-examples.html > > That will make it easier to see what’s going on. > > -Paul > _______________________________________________
Thanks Paul Good point. I should also offer the full path of the error message: /home/gub/NewGub/gub/target/mingw/src/lilypond-git.sv.gnu.or g--lilypond.git-release-unstable/lily/grob-property.cc, Line 243 Expression:scm_is_null (value) || scm_is_eq (value, marker) The tiny example here is taken from LSR 623, and you can uncomment the line in the "music" variable which switches between overrides to invoke the error. I've included (commented out) the original scaled staves which demonstrate the capacity of the function: \version "2.19.36" customClefStencil = #(ly:make-stencil `(path 0.1 `(moveto 0 0 curveto 0 1 0.7 2.5 1.5 1.5 lineto 1.5 -3 closepath) 'round 'round #t) (cons 0 1.5) (cons -3 2)) scaleCustomClefStencil = #(lambda (grob) (let* ((sz (ly:grob-property grob 'font-size 0.0)) (mult (magstep sz))) (set! (ly:grob-property grob 'stencil) (ly:stencil-scale customClefStencil mult mult)))) music = \relative c' { \override Staff.Clef.stencil = \customClefStencil %\override Staff.Clef.stencil = \scaleCustomClefStencil c1 g1 } \new Staff \music %{ << \new Staff \with { fontSize = #-3 \override StaffSymbol.staff-space = #(magstep -3) \override StaffSymbol.thickness = #(magstep -3) } \music \new Staff \music \new Staff \with { fontSize = #2 \override StaffSymbol.staff-space = #(magstep 2) \override StaffSymbol.thickness = #(magstep 2) } \music >> %} _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user