On Monday 25 December 2006 07:05, Joe Neeman wrote: > On 12/21/06, Han-Wen Nienhuys <[EMAIL PROTECTED]> wrote: > > Erik Sandberg escreveu: > > > BTW, in this case it may be good to register the fraction as its own > > > > argument > > > > > type, so \tuplets and \tuplet are generic music functions, both with > > > signature > > > (tuplet-fraction? music?) > > > > it would be cool if we could pull this off, that would make \time generic > > too. > > Could you make 3:2 equivalent to #'(3 . 2)? Then > - you don't need to introduce a new type > - we could use x:y everywhere instead of the scary (it certainly was for > me when I first started with lilypond) #'(x . y)
With the current way the parser works, you'd probably be able to do something like #(ly:export '(x . y)); of course we can add a define-music-function style synonym on top of that, like #(make-fraction x y) BTW, I have some ideas to change the way SCM expressions work in the parser; unfortunately I haven't had the time to code lilypond for a very long time though, and other things are of higher priority. My idea is that the detection of types after ly:export should be carried out by the parser rather than lexer; this would allow a more intuitive behaviour of music macros the day they are implemented (it would be possible to delay the evaluation of inline SCM expressions) -- Erik _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org http://lists.gnu.org/mailman/listinfo/lilypond-user
