Guitar stroke fingering and multiple voices

[Nick Payne]

Don't know if this has been thought of before (I couldn't find it in the 
lilypond-user archives), but while having to do some tweaking to get 
stroke fingering in one voice to avoid notes in another voice, I 
realised that multiple stroke fingering indications can be attached to a 
single note. So in the attached example, by moving the stroke fingering 
indications for notes in the middle voice to the simultaneous notes in 
the upper voice, no tweaking is required:

%========================
\version "2.13.12"

P = #(define-music-function (parser location) ()
    (apply make-music
        (append
            (list
                'StrokeFingerEvent
                'origin location)
            (list 'digit 1))))

I = #(define-music-function (parser location) ()
    (apply make-music
        (append
            (list
                'StrokeFingerEvent
                'origin location)
            (list 'digit 2))))

M = #(define-music-function (parser location) ()
    (apply make-music
        (append
            (list
                'StrokeFingerEvent
                'origin location)
            (list 'digit 3))))

A = #(define-music-function (parser location) ()
    (apply make-music
        (append
            (list
                'StrokeFingerEvent
                'origin location)
            (list 'digit 4))))

\new Staff \relative c'' {
  \key c \major
  \time 3/4
<<
    {
         \set strokeFingerOrientations = #'(up)
         \override StrokeFinger #'add-stem-support = ##t
<e c g>4 r16 <d-\A > <c-\I -\A > <b-\A > <a-\I -\M > <g-\M > <fis-\I >32 
<g-\M > <e-\I >16 |
    }
  \\
  \\
    { s4. \autoBeamOff e8 e s | }
  \\
    {
         \set strokeFingerOrientations = #'(down)
         \override StrokeFinger #'add-stem-support = ##t
<c-\P >8[ <c-\P >] <c-\P >[ <c-\P >] <c-\P > <c-\P > |
    }
>>
}
%========================

Nick

voices.preview.png
Description: PNG image