can Score.markFormatter be [globally] blanked, independent of other RehearsalMark items?

[Kieren MacMillan]

Hello,

I’ve got Lilypond note code which I want to reuse in multiple formats; for 
example, I have musical theatre songs which I would like to have in their 
original score format (using my custom musical theatre templates/stylesheets), 
and then republish in “Piano/Vocal Selections” form (think Hal Leonard 
stylesheet).

The global variable includes RehearsalMarks: score-wide text(s), signs (e.g., 
“D.C. al Coda”), rehearsal letters, and so on. In the songbook version, I’d 
like to filter out the letters only, without having to use tags if possible. I 
haven’t found any way of adjusting Score.markFormatter to accomplish the 
desired effect. I tried adding

(define-public (format-mark-null mark context)
  (make-null-markup))

to scm/translation-functions.scm, but it throws an error. Is there an 
incantation (either existing or easily added) that will accomplish what I need?

Thanks,
Kieren.
________________________________

Kieren MacMillan, composer
‣ website: www.kierenmacmillan.info
‣ email: address@hidden