Hello,
> > Does it work just to define this macro at the top level
> >
> > fraction = \tweak #'text #tuplet-number::calc-fraction-text
> No, this doesn't work.
OK, but I have a question. It is common to write such things as
push = \once \override NoteColumn #'extra-X-extent = #'(0 . 2)
and then later to use \push before a note in the music.
However the above definition of fraction doesn't yield a valid
\fraction macro call, as you pointed out.
Is there any clear criterion for knowing in advance whether a given
expression for a macro definition will actually work?
What I get out of your function definition of fraction (below) is that
\fraction is intrinsically a function that has to be followed by a music
argument. But even though
\once \override NoteColumn #'extra-X-extent = #'(0 . 2)
would have to be followed by a note to make any sense, that doesn't
seem to make it a function-with-one-argument. I accept the fact that
\tweak #'text #tuplet-number::calc-fraction-text
*is* a function-with-one-argument, but in general how is one supposed to
know whether a given expression is just a state-creator or it's a
function-with-one-or-more-arguments?
-- Tom
**************************************************************
On Wed, 29 Nov 2006, Mats Bengtsson wrote:
> No, this doesn't work.
>
> What does work is
> \version "2.10.0"
>
> fraction = #(define-music-function (parser location music) (ly:music?)
> #{
> \tweak #'text #tuplet-number::calc-fraction-text $music
> #})
>
>
> \relative c'{
> \fraction
> \times 2/3 {
> c'8 c'8 c'8
> }
>
> }
>
> However, what is the reason to use \tweak at all? Why not simply do
> an ordinary \once \override:
>
> \version "2.10.0"
>
> fraction = \override TupletNumber #'text =
> #tuplet-number::calc-fraction-text
>
> \relative c'{
> \fraction
> \times 2/3 {
> c'8 c'8 c'8
> }
> }
>
>
> /Mats
>
> [EMAIL PROTECTED] wrote:
> > Hello,
> >
> > Does it work just to define this macro at the top level
> >
> > fraction = \tweak #'text #tuplet-number::calc-fraction-text
> >
> > and then later in the music to write
> >
> > \fraction
> > \times 2/3 {
> > c'8 c'8 c'8
> > }
> >
> > Does LilyPond swallow that?
> >
> > -- Tom
> >
> > -------------------------------------------------
> >
> > Trevor Baca wrote:
> >
> > Hi,
> >
> > I frequently write
> >
> > \tweak #'text #tuplet-number::calc-fraction-text
> >
> > before tuplets, like this:
> >
> > \tweak #'text #tuplet-number::calc-fraction-text
> > \times 2/3 {
> > c'8 c'8 c'8
> > }
> >
> > What's the best way to abbreviate to something like this?
> >
> > \fraction
> > \times 2/3 {
> > c'8 c'8 c'8
> > }
> >
> > I've tried this music function ...
> >
> > fraction = #(define-music-function (parser location) ()
> > #{
> > \tweak #'text #tuplet-number::calc-fraction-text
> > #})
> >
> > ... but get this parse error:
> >
> > Parsing...
> > <string>:3:9: error: syntax error, unexpected '}'
> >
> > }361.ly:5:0: error: errors found, ignoring music expression
> >
> > Any suggestions for a good abbreviation?
> >
> >
>
> --
> =============================================
> Mats Bengtsson
> Signal Processing
> Signals, Sensors and Systems
> Royal Institute of Technology
> SE-100 44 STOCKHOLM
> Sweden
> Phone: (+46) 8 790 8463
> Fax: (+46) 8 790 7260
> Email: [EMAIL PROTECTED]
> WWW: http://www.s3.kth.se/~mabe
> =============================================
>
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