Hi,
the awful spacing of input/regression/tablature-harmonic-functions.ly
let me to investigate, and it is apparently due to StringNumber being
set to transparent, meaning that it still occupies space. I tried now
to do
\new Voice \with { \override StringNumber #'stencil = ##f }
{ \clef "treble_8"
e,1 | % check whether tab note head is restored
\harmonicByFret #12 e'4\1 ~
\harmonicByFret #12 e'4\1 (
\ottava #1
\harmonicByFret #7 e'4\1)
\harmonicByFret #5 e'8\1
\ottava #2
\harmonicByFret #4 < b\2 e'\1 >8 |
\harmonicByFret #3 < g\3 b\2 e'\1 >4
\harmonicByFret #2.7 < g\3 b\2 e'\1 >4
\harmonicByFret #2.3 < g\3 b\2 e'\1 >4
\harmonicByFret #2 < g\3 b\2 e'\1 >4 |
\ottava #0
}
instead (removing the New_fingering_engraver is not an option since it
is responsible for more than just string numbers), but I get programming
errors in return:
Interpreting music...
Preprocessing graphical objects...
programming error: cannot align on self: empty element