Re: Automatic octaves

[David Kastrup]

Daniel Rosen <address@hidden> writes:

>> -----Original Message-----
>> From: David Kastrup [mailto:address@hidden
>> Sent: Friday, January 10, 2014 11:31 AM
>> To: Daniel Rosen
>> Cc: Eluze; address@hidden
>> Subject: Re: Automatic octaves
>> 
>> You could use dak's most elegant make-relative macro...
>> 
>> myoctavate =
>> #(define-music-function (parser location music) (ly:music?)
>>   (make-relative (music) music
>>     #{ \context Bottom << $music \transpose c c' $music >> #}))
>> 
>> \relative { \myoctavate { a b c d } e f g a }
>
> That gets me the attached output.

Sick.  But you'll get something similar with
\relative { { << { a b c d } >> } e f g a }

The \context Bottom helps to avoid the effect in the macro itself but
does not manage to extent its effect beyond itself.  I don't have
anything to offer that would work better, so you just have to use
explicit contexts, like


\relative \new Voice { \myoctavate { a b c d } e f g a }


-- 
David Kastrup