Hi Urs

Could you please post the *full* log and the input file?
Then I can look into it. I recall having seen this error before but not what it was about.
Thanks for looking! Source and log attached. The source is example-1.ly from edition-engraver/usage-examples.

Trevor

Starting lilypond-windows.exe 2.19.80 [example-1.ly]...
Processing 
`C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly'
Parsing...
C:/Users/tdani/openlilylib/oll-core/package.ily:57:2: error: GUILE signaled an 
error for the expression beginning here
#
 (if (not (defined? 'openlilylib-root))

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:35:1:
 error: unknown escaped string: `\loadPackage'

\loadPackage edition-engraver

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:35:14:
 error: syntax error, unexpected SYMBOL, expecting '.' or '=' or ','
\loadPackage 
             edition-engraver

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:37:1:
 error: unknown escaped string: `\addEdition'

\addEdition test

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:39:1:
 error: unknown escaped string: `\editionMod'

\editionMod test 2 0/4 sing.with.bach.along.Voice.B \once \override 
NoteHead.color = #red

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:39:53:
 error: syntax error, unexpected MUSIC_FUNCTION, expecting '='
\editionMod test 2 0/4 sing.with.bach.along.Voice.B 
                                                    \once \override 
NoteHead.color = #red

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:41:1:
 error: unknown escaped string: `\editionMod'

\editionMod test 2 2/4 sing.with.bach.along.Voice.B \override NoteHead.color = 
#green

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:41:13:
 error: syntax error, unexpected SYMBOL, expecting '.' or '=' or ','
\editionMod 
            test 2 2/4 sing.with.bach.along.Voice.B \override NoteHead.color = 
#green

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:41:53:
 error: syntax error, unexpected \override, expecting '='
\editionMod test 2 2/4 sing.with.bach.along.Voice.B 
                                                    \override NoteHead.color = 
#green

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:42:1:
 error: unknown escaped string: `\editionMod'

\editionMod test 2 3/4 sing.with.bach.along.Voice.B \override NoteHead.color = 
#blue

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:42:13:
 error: syntax error, unexpected SYMBOL, expecting '.' or '=' or ','
\editionMod 
            test 2 3/4 sing.with.bach.along.Voice.B \override NoteHead.color = 
#blue

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:42:53:
 error: syntax error, unexpected \override, expecting '='
\editionMod test 2 3/4 sing.with.bach.along.Voice.B 
                                                    \override NoteHead.color = 
#blue

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:43:1:
 error: unknown escaped string: `\editionMod'

\editionMod test 3 1/4 sing.with.bach.along.Voice.B \revert NoteHead.color

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:43:13:
 error: syntax error, unexpected SYMBOL, expecting '.' or '=' or ','
\editionMod 
            test 3 1/4 sing.with.bach.along.Voice.B \revert NoteHead.color

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:43:53:
 error: syntax error, unexpected \revert, expecting '='
\editionMod test 3 1/4 sing.with.bach.along.Voice.B 
                                                    \revert NoteHead.color

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:45:1:
 error: unknown escaped string: `\editionMod'

\editionMod test 5 0/4 sing.with.bach.along.Voice.#(string->symbol "1") \revert 
NoteHead.color

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:45:1:
 error: syntax error, unexpected STRING, expecting '='

\editionMod test 5 0/4 sing.with.bach.along.Voice.#(string->symbol "1") \revert 
NoteHead.color

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:45:73:
 error: syntax error, unexpected \revert, expecting '='
\editionMod test 5 0/4 sing.with.bach.along.Voice.#(string->symbol "1") 
                                                                        \revert 
NoteHead.color

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:47:1:
 error: unknown escaped string: `\editionMod'

\editionMod test 13 3/8 sing.with.bach.along.Voice.C \once \override 
NoteHead.color = #red

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:47:1:
 error: syntax error, unexpected STRING, expecting '='

\editionMod test 13 3/8 sing.with.bach.along.Voice.C \once \override 
NoteHead.color = #red

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:47:54:
 error: syntax error, unexpected MUSIC_FUNCTION, expecting '='
\editionMod test 13 3/8 sing.with.bach.along.Voice.C 
                                                     \once \override 
NoteHead.color = #red

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:50:1:
 error: unknown escaped string: `\editionModList'

\editionModList test sing.with.bach.Score \break #'(5 9 13 17)

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:50:17:
 error: syntax error, unexpected SYMBOL, expecting '.' or '=' or ','
\editionModList 
                test sing.with.bach.Score \break #'(5 9 13 17)

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:50:43:
 error: syntax error, unexpected MUSIC_IDENTIFIER, expecting '='
\editionModList test sing.with.bach.Score 
                                          \break #'(5 9 13 17)

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:52:1:
 error: unknown escaped string: `\editionMod'

\editionMod test 2 2/4 sing.with.bach.along.Staff \clef "alto"

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:52:13:
 error: syntax error, unexpected SYMBOL, expecting '.' or '=' or ','
\editionMod 
            test 2 2/4 sing.with.bach.along.Staff \clef "alto"

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:52:51:
 error: syntax error, unexpected MUSIC_FUNCTION, expecting '='
\editionMod test 2 2/4 sing.with.bach.along.Staff 
                                                  \clef "alto"

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:53:1:
 error: unknown escaped string: `\editionMod'

\editionMod test 3 2/4 sing.with.bach.along.Staff \clef "G"

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:53:13:
 error: syntax error, unexpected SYMBOL, expecting '.' or '=' or ','
\editionMod 
            test 3 2/4 sing.with.bach.along.Staff \clef "G"

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:53:51:
 error: syntax error, unexpected MUSIC_FUNCTION, expecting '='
\editionMod test 3 2/4 sing.with.bach.along.Staff 
                                                  \clef "G"

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:54:1:
 error: unknown escaped string: `\editionMod'

\editionMod test 5 0/4 sing.with.bach.along.Staff \bar ".|:-||"

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:54:13:
 error: syntax error, unexpected SYMBOL, expecting '.' or '=' or ','
\editionMod 
            test 5 0/4 sing.with.bach.along.Staff \bar ".|:-||"

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:54:51:
 error: syntax error, unexpected MUSIC_FUNCTION, expecting '='
\editionMod test 5 0/4 sing.with.bach.along.Staff 
                                                  \bar ".|:-||"

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:55:1:
 error: unknown escaped string: `\editionMod'

\editionMod test 5 0/4 sing.with.bach.along.Staff {

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:55:13:
 error: syntax error, unexpected SYMBOL, expecting '.' or '=' or ','
\editionMod 
            test 5 0/4 sing.with.bach.along.Staff {

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:55:51:
 error: syntax error, unexpected '{', expecting '='
\editionMod test 5 0/4 sing.with.bach.along.Staff 
                                                  {

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:59:1:
 error: unknown escaped string: `\editionMod'

\editionMod test 10 0/4 sing.with.bach.along.Staff \key g \major

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:59:13:
 error: syntax error, unexpected SYMBOL, expecting '.' or '=' or ','
\editionMod 
            test 10 0/4 sing.with.bach.along.Staff \key g \major

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:59:52:
 error: syntax error, unexpected MUSIC_FUNCTION, expecting '='
\editionMod test 10 0/4 sing.with.bach.along.Staff 
                                                   \key g \major

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:61:1:
 error: unknown escaped string: `\editionMod'

\editionMod test 5 0/4 sing.with.bach.Score \set proportionalNotationDuration = 
#(ly:make-moment 1/24)

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:61:13:
 error: syntax error, unexpected SYMBOL, expecting '.' or '=' or ','
\editionMod 
            test 5 0/4 sing.with.bach.Score \set proportionalNotationDuration = 
#(ly:make-moment 1/24)

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:61:45:
 error: syntax error, unexpected \set, expecting '='
\editionMod test 5 0/4 sing.with.bach.Score 
                                            \set proportionalNotationDuration = 
#(ly:make-moment 1/24)

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:62:1:
 error: unknown escaped string: `\editionMod'

\editionMod test 7 0/4 sing.with.bach.Score \unset proportionalNotationDuration

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:62:13:
 error: syntax error, unexpected SYMBOL, expecting '.' or '=' or ','
\editionMod 
            test 7 0/4 sing.with.bach.Score \unset proportionalNotationDuration

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:62:45:
 error: syntax error, unexpected \unset, expecting '='
\editionMod test 7 0/4 sing.with.bach.Score 
                                            \unset proportionalNotationDuration

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:64:1:
 error: unknown escaped string: `\editionMod'

\editionMod test 5 1/4 sing.with.bach.along.Staff ^\tweak self-alignment-X #0 
-"Hallo"

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:64:51:
 error: syntax error, unexpected '^', expecting '='
\editionMod test 5 1/4 sing.with.bach.along.Staff 
                                                  ^\tweak self-alignment-X #0 
-"Hallo"

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:65:1:
 error: unknown escaped string: `\editionMod'

\editionMod test 9 0/4 sing.with.bach.along.Staff \mark \default

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:65:13:
 error: syntax error, unexpected SYMBOL, expecting '.' or '=' or ','
\editionMod 
            test 9 0/4 sing.with.bach.along.Staff \mark \default

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:65:51:
 error: syntax error, unexpected MUSIC_FUNCTION, expecting '='
\editionMod test 9 0/4 sing.with.bach.along.Staff 
                                                  \mark \default

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:66:1:
 error: unknown escaped string: `\editionMod'

\editionMod test 10 0/4 sing.with.bach.along.Staff \mark \default

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:66:13:
 error: syntax error, unexpected SYMBOL, expecting '.' or '=' or ','
\editionMod 
            test 10 0/4 sing.with.bach.along.Staff \mark \default

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:66:52:
 error: syntax error, unexpected MUSIC_FUNCTION, expecting '='
\editionMod test 10 0/4 sing.with.bach.along.Staff 
                                                   \mark \default

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:69:1:
 error: unknown escaped string: `\editionMod'

\editionMod test 10 0/4 sing.with.bach.along.Voice.B {

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:69:13:
 error: syntax error, unexpected SYMBOL, expecting '.' or '=' or ','
\editionMod 
            test 10 0/4 sing.with.bach.along.Voice.B {

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:69:54:
 error: syntax error, unexpected '{', expecting '='
\editionMod test 10 0/4 sing.with.bach.along.Voice.B 
                                                     {

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:77:1:
 error: unknown escaped string: `\consistToContexts'

\consistToContexts #edition-engraver Score.Staff.Voice

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:77:20:
 error: syntax error, unexpected SCM_TOKEN, expecting '.' or '=' or ','
\consistToContexts 
                   #edition-engraver Score.Staff.Voice

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:77:21:
 error: GUILE signaled an error for the expression beginning here
\consistToContexts #
                    edition-engraver Score.Staff.Voice

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:79:1:
 error: syntax error, unexpected \layout, expecting '='

\layout {

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:82:5:
 error: unknown escaped string: `\editionID'
    
    \editionID ##f sing.with.bach

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:82:16:
 error: syntax error, unexpected SCM_TOKEN, expecting '='
    \editionID 
               ##f sing.with.bach

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:84:3:
 error: syntax error, unexpected '}', expecting '='
  
  }

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:86:5:
 error: unknown escaped string: `\Voice'
    
    \Voice

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:86:5:
 error: string outside of text script or \lyricmode
    
    \Voice

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:89:1:
 error: syntax error, unexpected '}'

}

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:92:3:
 error: unknown escaped string: `\editionID'
  
  \editionID along

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:92:14:
 error: syntax error, unexpected SYMBOL, expecting '='
  \editionID 
             along

C:/Users/tdani/AppData/Local/Temp/frescobaldi-u9vnw1qc/tmpuqjcysah/example-1.ly:104:2:
 error: Unfinished main input
}
 

Interpreting music...
Preprocessing graphical objects...
Interpreting music...
Preprocessing graphical objects...
Interpreting music...
Preprocessing graphical objects...
Interpreting music...
Preprocessing graphical objects...
Interpreting music...
Preprocessing graphical objects...
Interpreting music...
Preprocessing graphical objects...
Interpreting music...
Preprocessing graphical objects...
Interpreting music...
Preprocessing graphical objects...
Interpreting music...
Preprocessing graphical objects...
Interpreting music...
Preprocessing graphical objects...
Interpreting music...
Preprocessing graphical objects...
Interpreting music...
Preprocessing graphical objects...
Interpreting music...
Preprocessing graphical objects...
Interpreting music...[8][16]
Preprocessing graphical objects...
Finding the ideal number of pages...
Fitting music on 1 or 2 pages...
Drawing systems...
programming error: system with empty extent
continuing, cross fingers
Layout output to `./tmp-lilypond-HnQHju'...
Converting to `example-1.pdf'...
Deleting `./tmp-lilypond-HnQHju'...
Value out of range 0 to 4294967295: -1
Unbound variable: edition-engraver
fatal error: failed files: 
"C:\\Users\\tdani\\AppData\\Local\\Temp\\frescobaldi-u9vnw1qc\\tmpuqjcysah\\example-1.ly"
Exited with return code 1.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
% This file is part of openLilyLib,                                           %
%                      ===========                                            %
% the community library project for GNU LilyPond                              %
% (https://github.com/openlilylib)                                            %
%              -----------                                                    %
%                                                                             %
% Library: edition-engraver                                                   %
%          ================                                                   %
%                                                                             %
% openLilyLib is free software: you can redistribute it and/or modify         %
% it under the terms of the GNU General Public License as published by        %
% the Free Software Foundation, either version 3 of the License, or           %
% (at your option) any later version.                                         %
%                                                                             %
% openLilyLib is distributed in the hope that it will be useful,              %
% but WITHOUT ANY WARRANTY; without even the implied warranty of              %
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               %
% GNU General Public License for more details.                                %
%                                                                             %
% You should have received a copy of the GNU General Public License           %
% along with openLilyLib. If not, see <http://www.gnu.org/licenses/>.         %
%                                                                             %
% openLilyLib is maintained by Urs Liska, u...@openlilylib.org                  %
% edition-engraver is maintained by Jan-Peter Voigt, jp.vo...@gmx.de          %
% and others.                                                                 %
%       Copyright Jan-Peter Voigt, Urs Liska, 2016                            %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\version "2.19.37"

\include "oll-core/package.ily"
\loadPackage edition-engraver

\addEdition test

\editionMod test 2 0/4 sing.with.bach.along.Voice.B \once \override NoteHead.color = #red

\editionMod test 2 2/4 sing.with.bach.along.Voice.B \override NoteHead.color = #green
\editionMod test 2 3/4 sing.with.bach.along.Voice.B \override NoteHead.color = #blue
\editionMod test 3 1/4 sing.with.bach.along.Voice.B \revert NoteHead.color
% TODO how to enter this?
\editionMod test 5 0/4 sing.with.bach.along.Voice.#(string->symbol "1") \revert NoteHead.color

\editionMod test 13 3/8 sing.with.bach.along.Voice.C \once \override NoteHead.color = #red


\editionModList test sing.with.bach.Score \break #'(5 9 13 17)

\editionMod test 2 2/4 sing.with.bach.along.Staff \clef "alto"
\editionMod test 3 2/4 sing.with.bach.along.Staff \clef "G"
\editionMod test 5 0/4 sing.with.bach.along.Staff \bar ".|:-||"
\editionMod test 5 0/4 sing.with.bach.along.Staff {
  \once \override KeySignature.color = #red
  \key f \major
}
\editionMod test 10 0/4 sing.with.bach.along.Staff \key g \major

\editionMod test 5 0/4 sing.with.bach.Score \set proportionalNotationDuration = #(ly:make-moment 1/24)
\editionMod test 7 0/4 sing.with.bach.Score \unset proportionalNotationDuration

\editionMod test 5 1/4 sing.with.bach.along.Staff ^\tweak self-alignment-X #0 -"Hallo"
\editionMod test 9 0/4 sing.with.bach.along.Staff \mark \default
\editionMod test 10 0/4 sing.with.bach.along.Staff \mark \default


\editionMod test 10 0/4 sing.with.bach.along.Voice.B {
  \once \override NoteHead.extra-offset = #'(2 . -1)
  \once \override NoteHead.color = #green
}

% "Install" the edition-engraver in a number of contexts.
% The order is not relevant,
% Dynamics is not used in this example, Foo triggers an oll:warn
\consistToContexts #edition-engraver Score.Staff.Voice

\layout {
  \context {
    \Score
    \editionID ##f sing.with.bach
    %edition-engraver-log = ##t
  }
  \context {
    \Voice
    %edition-engraver-log = ##t
  }
}

\new Staff = "BACH" \with {
  \editionID along
} {
  R1
  <<
    \repeat unfold 10 \relative c'' { bes4 ( a c b ) } \\
    \repeat unfold 10 \relative c' { d4. e4 f8 g4 }
  >>
  <<
    \repeat unfold 10 \relative c'' { bes4 a c b } \\
    \repeat unfold 10 \relative c' { d4. e4 f8 g4 } \\
    \repeat unfold 10 \relative c' { f2 a }
  >>
}
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