Re: Using strings and other types to return markup

[Phil Holmes]

Thanks both.  I was sure I'd tried that as one of my variants, but clearly 
not.  I think if I had tried it, I was incorrectly calling the procedure 
with a string without the # before it.  FWIW I'd copied the syntax from the 
(markup (number->string newval))))) in 
http://lsr.di.unimi.it/LSR/Snippet?id=543 and Urs's explanation makes it 
clear that this is a function and so has (), whereas my attempt isn't, and 
so shouldn't.

--
Phil Holmes


----- Original Message ----- 
From: "Urs Liska" <address@hidden>
To: <address@hidden>
Sent: Wednesday, May 11, 2016 10:46 AM
Subject: Re: Using strings and other types to return markup


> Am 11.05.2016 um 11:43 schrieb Jan-Peter Voigt:
> > Hi Phil,
> >
> > you just need to remove the parens around 'theText'. Also inside
> > (markup ...) everything is interpreted as a parameter for the function
> > (macro or whatever) 'markup' and evaluated as a scheme-expression for
> > thet purpose.
>
> To clarify that more:
>
> (theText)
>
> tries to invoke a procedure 'theText', while
>
> theText
>
> represents the variable as passed into the function as an argument.
>
> HTH
> Urs
>
> > HTH
> > Jan-Peter
> >
> > #(define-markup-command (do-tilde layout props theText) (string?)
> >   (interpret-markup layout props
> >         (markup theText )
> > ))
> >
> >
> > Am 11.05.2016 um 11:31 schrieb Phil Holmes:
> > > > I'm not top posting
> > >
> > > I want to create a function in scheme that will take a string argument
> > > something like "san~t" and return a markup which will place the tilde
> > > above the n.  I know how to create the markup using markup functions
> > > like
> > > combine and translate, but I want to make this easier by using a scheme
> > > function.  I'm struggling to work out how to take a string argument and
> > > use it to return markup.  My test function is:
> > >
> > > #(define-markup-command (do-tilde layout props theText) (string?)
> > >    (interpret-markup layout props
> > >          (markup (theText) )
> > > ))
> > >
> > > I call it with:
> > >
> > > mel = \relative c'' { c4  }
> > > lyr = \lyricmode { \markup { \do-tilde #"Testing" } }
> > > <<
> > > \new Voice = melody \mel
> > > \new Lyrics \lyricsto melody \lyr
> > > > >
> > >
> > > I get the error
> > >
> > > In expression (theText):
> > > LyricTest.ly:13:17: Wrong type to apply: "Testing"
> > >
> > > Can anyone point out to me what I'm doing wrong (or how to do this
> > > correctly?)
> > >
> > > TIA
> > >
> > >
> > > _______________________________________________
> > > lilypond-user mailing list
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> > > https://lists.gnu.org/mailman/listinfo/lilypond-user
> >
> >
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