Bric <b...@flight.us> writes:
> On 11/05/2013 03:08 PM, David Kastrup wrote:
>> Paul Morris <p...@paulwmorris.com> writes:
>>
>>> But I think what you really want is a music function:
>>>
>>> \version "2.17.29"
>>>
>>> boo =
>>> #(define-music-function
>>> (parser location the-music)
>>> (ly:music?)
>>> #{
>>> \override NoteHead.color = #red
>>> #the-music
>>> \revert NoteHead.color
>>> #})
>>>
>>> \relative c' { c4 d e f \boo { g a b } c d e }
>> For such fixed override/revert pairings you should write
>> \temporary\override in the music function instead of just \override:
>> otherwise any previous \override NoteHead.color = #blue will get
>> overwritten and not get restored afterwards.
>
> You rock! This forum rocks! Lilypond rocks!
>
> That said: how do I parametrize \boo ?
>
> With the color as parameter, for example, for something like:
>
> c4 d e f \boo #'red { g a b } c d e f8 g \boo #'blue { b d a4 d }
> dis e fis
>
> I realize I'm completely clueless about the syntax
boo =
#(define-music-function
(parser location color the-music)
(color? ly:music?)
#{
\temporary \override NoteHead.color = #color
#the-music
\revert NoteHead.color
#})
But colors are not symbols but triplets. The default colors
red/blue/black... are stored in variables of that name. So you'd have
to write
\boo #red { g a b } ...
rather than \boo #'red ...
--
David Kastrup
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