Re: \omit multiple/list

[Kieren MacMillan]

Hi Damian,

> how would I reduce e.g.
> 
> \once \omit TupletBracket 
> \once \omit TupletNumber 
> \once \omit Stem
> 
> to a structure conceptually like:
> 
> \once \omit (TupletBracket, TupletNumber, Stem)
> 
> i.e. put the grobs in a list

Maybe something like this (but something that actually works LOL):

%%%  SNIPPET BEGINS
\version "2.25.11"

omitt =
  #(define-scheme-function (groblist) (grob-list?)
      (for-each
        (lambda (gr)
          #{ \omit gr #})
         groblist))

\omitt #'(TimeSignature NoteHead)
%%%  SNIPPET ENDS


This snippet “works”, in that it iterates through the list and correctly 
outputs the grob name:

%%%  SNIPPET BEGINS
omitt =
  #(define-scheme-function (groblist) (list?)
      (for-each
        (lambda (gr)
          (ly:message
           (format #f "~y" gr)))
         groblist))

\omitt #'(TimeSignature NoteHead)
%%%  SNIPPET ENDS

I’m just not sure the precise incantation to make the first snippet Do The 
Right Thing™.

Hope this helps!
Kieren.
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