Re: macro for \once\override

[David Kastrup]

Wols Lists <antlists@youngman.org.uk> writes:

> On 29/08/20 05:45, Werner LEMBERG wrote:
>>       \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
>>       c'
>
> Unfortunately this might well require re-writing the parser, but it
> struck me it might be a nice idea to nick an idea from other object
> oriented languages as follows ...
>
>     \once \override FretBoard.size = #'1.0
>     \once \override \using FretBoard.fret-diagram-details {
>       .barre-type = #'straight
>         .dot-color = #'black
>         .finger-code = #'below-string
>     }
>     c'

What's wrong with

  \once \override FretBoard.fret-diagram-details =
    #'((barre-type . straight)
       (dot-color . black)
       (finger-code . below-string))

I mean, I am as proud as anybody that separate subproperty overrides
don't cause LilyPond to go down in flames any more, but this is an
alist, after all.

-- 
David Kastrup