how can I abstract the application of \hideNotes and \unHideNotes

[Kieren MacMillan]

Hi all,

Please consider the following snippet:

%%%
\version "2.25.33"

music_only = \relative c'' {
  c4 4 4 d4
}

hider = {
  s4 \hideNotes s2 \unHideNotes
}

\score {
  << \music_only \hider >>
}

\score {
  <<
    \music_only
    \new Devnull \hider
  >>
}

hideScoreNotes = {
  % hide notes, accidentals, etc.
  \hide Score.Dots
  \hide Score.NoteHead
  \hide Score.NoteHead
  \hide Score.Stem
  \hide Score.Accidental
  \hide Score.Rest
  \hide Score.TabNoteHead
}
unHideScoreNotes = {
  \revert Score.Accidental.transparent
  \revert Score.Stem.transparent
  \revert Score.NoteHead.transparent
  \revert Score.NoteHead.no-ledgers
  \revert Score.Dots.transparent
  \revert Score.Rest.transparent
  \revert Score.TabNoteHead.transparent
}

hiderScore = {
  s4 \hideScoreNotes s2 \unHideScoreNotes
}

\score {
  <<
    \music_only
    \new Devnull \hiderScore
  >>
}
%%%

Why do the first two attempts fail?
Can they be fixed so one doesn’t have to use the “nuclear” option I have as my 
third score?

I tried a bunch of different incantations, but just couldn’t find the right one.

Thanks,
Kieren.
__________________________________________________

My work day may look different than your work day. Please do not feel obligated 
to read or respond to this email outside of your normal working hours.