Re: Guitar notation - scheme function for slurs with markup

[Valentin Petzel]

Hi Stefan, hi Lukas,

I think it might be reasonable to directly annotate the Slurs instead. This 
allows for nice placement, see the appended example.

Cheers,
Valentin

Am Montag, 30. Mai 2022, 08:17:58 CEST schrieb Stefan E. Mueller:
> Hi Lukas,
> 
> yes, that is what I need, I can take it from there - many thanks for the
> quick response and solution, and the explanations!
> 
>       Stefan
> 
> --
> Stefan E. Mueller
> 
> stefan.e.mueller@gmx.de
> 
> On Sun, 29 May 2022, Lukas-Fabian Moser wrote:
> > Hi Stefan,
> > 
> > Am 29.05.22 um 22:42 schrieb Stefan E. Mueller:
> >> I am not sure yet what the difference between a scheme-function and a
> >> music-function is (the second example seems to work whichever definition
> >> is chosen).
> > 
> > A music function must return music, a scheme function can return more
> > general expressions (for instance, a new function or a list of symbols).
> > 
> >> The "-" dash in my case added an (unwanted) accentuation to
> >> the first note, I get the slur with the markup without the accent only if
> >> I remove it (not sure what it is supposed to do - manual says it is a
> >> required
> >> named direction indicator, but in my version 2.22.1 it doesn't work like
> >> that).
> > 
> > Ah, I thought you wanted the accent. :-)
> > 
> > Both the - and ^ symbols have various meanings; it's important to read
> > them
> > in order.
> > 
> > Add articulation with neutral direction/up-facing/down-facing: -!, ^!, _!
> > (here I use ! = staccatissimo as an articulation, but ( = slur, ^ =
> > marcato
> > and - = tenuto are other examples)
> > 
> > If you just want a slur that should have its direction forced upwards,
> > just
> > write ^(
> > 
> >> I thought the function-constructs were merely doing variable
> >> substitutions, but it seems there is more to this. Because now I have the
> >> problem how to describe several hammer-ons in a row with a function, like
> >> this:
> >> 
> >> \new Staff {
> >> e''8^(^\markup {\halign #-1.5 ho} f''8)^\markup {\halign #-1.5 ho} g''\8)
> >> }
> >> 
> >> Ideally, I'd like to be able to write this like
> >> 
> >> e''8 \ho f''8 \ho g''8
> >> 
> >> (with the corresponding closing brackets also provided by the function,
> >> but it may be that this is not possible).
> > 
> > I assume you want another slur to start on the f''? Then maybe something
> > like this:
> > 
> > \version "2.22"
> > 
> > ho =
> > #(define-music-function (spacing music) ((number? -1.5) ly:music?)
> >    #{
> >      <>^(^\markup {\halign #spacing ho}
> >      #music
> >      <>)
> >    #})
> > 
> > \new Staff {
> >   e''8 \ho f''8 \ho g''8 a''
> > }
> > 
> > Lukas

hammer on.ly
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