Hello Jean
Wow! Thank you for an excellent 9-minute response!
Already tested your solution and everything worked perfectly.
You have saved me a lot of time typing AND increased the clarity of my code.
I see: Scheme and Lilypond code. Aha. I understand. Thank you SO much for
your detailed and helpful answer.
Much appreciated.
Jeremiah
On Sun, Feb 20, 2022 at 3:34 PM Jean Abou Samra <j...@abou-samra.fr> wrote:
>
>
> Le 20/02/2022 à 15:26, Jeremiah Reilly a écrit :
> > I have a problem which I cannot figure out.
> >
> > Lilypond has a built-in function to engrave guitar fingerings in a score.
> >
> > The function works just fine, but is long and cumbersome to type, for
> > example:
> >
> > \rightHandFinger #2 /(#2 = i = index finger)/
> >
> > which fingers the attached note with the index finger label 'i'.
> >
> > I was able to follow the manual and create a shorthand for this function:
> >
> > #(define RH rightHandFinger)
> >
> > which works just fine, as illustrated with the following code (see
> > attached score):
> >
> > #(define RH rightHandFinger)
> >
> > \new Staff \with {
> > instrumentName = "Example"
> > }
> >
> > \relative c'
> > {
> > \clef "treble_8"
> > \key f \major
> > \set strokeFingerOrientations = #'(up)
> > a4\RH #2 c\RH #3 d\RH #2 e\RH #3 \bar "|." |
> > }
> >
> > The code "\RH #2" is still more than I want to type.
> >
> > I want to create a fingering-function for the index finger as follows:
> >
> > \RHi (and similarly for all the fingerings i, m, a, and p).
> >
> > Can this be done? Am I missing a concept here? I tried:
> >
> > #(define RHi rightHandFinger #2)
> >
> > but this did not work.
>
>
>
> The LilyPond syntax for applying a command is
>
> \command arg1 arg2
>
> In Schemeland, it doesn't work this way: you call functions.
> The syntax for a call is
>
> (function arg1 arg2)
>
> Note the parentheses around the expression. LilyPond's
> music functions happen to be callable as Scheme functions
> too, so you should do
>
> #(define RHi (rightHandFinger 2))
>
> or, probably simpler:
>
> RHi = \rightHandFinger 2
>
> So why doesn't "RH = \rightHandFinger" work? Because \rightHandFinger
> alone isn't a complete value, it's a command that expects further
> arguments after it. However, you can use the syntax \etc to "cut"
> the argument list and get a new function. Thus,
>
> RH = \rightHandFinger \etc
>
> is (for usual purposes) equivalent to
>
> #(define RH rightHandFinger)
>
> Best,
> Jean
>
>
