Re: simple scheme function #{ $note #}

[David Kastrup]

Aaron Hill <address@hidden> writes:

> On 2018-05-11 06:53, Gianmaria Lari wrote:
>> Sorry to bother with a simple question. Why this does not work?
>>
>> \version "2.19.81"
>> pit = #(define-music-function
>>         (p) (ly:pitch?)
>>         #{ $p #}
>>         )
>> { \pit c' }
>
> The result is "error: music function cannot return c'".  It appears
> that a simple pitch by itself is not enough to qualify as music.

It's desirable to be able to enter pitches as #{ c' #} and similar.  Add
a duration to get a music expression.

> If you change the function to "#{ { $p } #}", it compiles.

Yes, but the duration is not really well-defined here (happens to end up
as the default duration of the current parser).

-- 
David Kastrup