Re: How to write a ly:pitch? as element of a pair?

[David Kastrup]

Urs Liska <address@hidden> writes:

> Hi all,
>
> I have a with block where I would like to let the user enter a pair as
> a value, and one of the elements of the pair should be a pitch.
>
> Something like:
>
> \with {
>   transposition = #'( d' . "D")
> }
>
> But this doesn't work, just like
>
>   transposition = #'( #{ d' #} . "D")
>
> What I currently do is have them write
>
>   transposition = d'
>   transposition-label = D
>
> and cons them together within the function. This works but is inconsistent.
>
> So is there a convenient way to write a pitch within a Scheme expression?

Like usual with quoting.

transposition = #`( ,#{ d' #} . "D")

Or even without quoting:

transposition = #(cons #{ d' #} "D")

But frankly: I'd use separate variables instead.

-- 
David Kastrup