Re: macro for \once\override

[Aaron Hill]

On 2020-08-28 9:45 pm, Werner LEMBERG wrote:
> > No.  I'm against it.  Introducing abbreviations into examples is a
> > slippery slope and sets a bad precedent.  In my scores I use \t for
> > \tuplet, but I would never inflict that on any public example, even
> > to save space.  Wrapped lines are not a visual or semantic issue to
> > me at least.  Please don't do this.
>
> Sigh.  I must admit that I don't understand this purism, which I
> almost consider as l'art pour l'art.
>
> Attached are the current version, my suggestion using an
> abbreviation, and an alternative that uses wrapping only.
>
> Of the new ones, which one do you consider more readable?

Why repeat \once that many times?  Just wrap up all the overrides 
together and \once it once:

%%%%
\once \override FretBoard.size = #'1.0
\once \override FretBoard.fret-diagram-details.barre-type = #'straight
\once \override FretBoard.fret-diagram-details.dot-color = #'black
\once \override FretBoard.fret-diagram-details.finger-code = 
#'below-string
%% ...becomes...
\once {
  \override FretBoard.size = #'1.0
  \override FretBoard.fret-diagram-details.barre-type = #'straight
  \override FretBoard.fret-diagram-details.dot-color = #'black
  \override FretBoard.fret-diagram-details.finger-code = #'below-string
}
%%%%

-- Aaron Hill