/usr/share/lilypond/2.16.2/scm/predefined-fretboards.scm is in lilypond-data 2.16.2-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 | ;;;; This file is part of LilyPond, the GNU music typesetter.
;;;;
;;;; Copyright (C) 2008--2012 Carl D. Sorensen <c_sorensen@byu.edu>
;;;;
;;;; LilyPond is free software: you can redistribute it and/or modify
;;;; it under the terms of the GNU General Public License as published by
;;;; the Free Software Foundation, either version 3 of the License, or
;;;; (at your option) any later version.
;;;;
;;;; LilyPond is distributed in the hope that it will be useful,
;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;;; GNU General Public License for more details.
;;;;
;;;; You should have received a copy of the GNU General Public License
;;;; along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
(define-public (parse-terse-string terse-definition)
"Parse a @code{fret-diagram-terse} definition string @var{terse-definition}
and return a marking list, which can be used with a fretboard grob."
(cdr (fret-parse-terse-definition-string (list '()) terse-definition)))
(define-public (get-chord-shape shape-code tuning base-chord-shapes)
"Return the chord shape associated with @var{shape-code} and
@var{tuning} in the hash-table @var{base-chord-shapes}."
(let ((hash-handle (hash-get-handle base-chord-shapes
(cons shape-code tuning))))
(if hash-handle
(cdr hash-handle)
'())))
(define-public (offset-fret fret-offset diagram-definition)
"Add @var{fret-offset} to each fret indication in
@var{diagram-definition} and return the resulting verbose
@code{fret-diagram-definition}."
(let ((verbose-definition
(if (string? diagram-definition)
(parse-terse-string diagram-definition)
diagram-definition)))
(map (lambda(item)
(let ((code (car item)))
(cond
((eq? code 'barre)
(list-set! item 3
(+ fret-offset (list-ref item 3)))
item)
((eq? code 'capo)
(list-set! item 1
(+ fret-offset (list-ref item 1)))
item)
((eq? code 'place-fret)
(list-set! item 2
(+ fret-offset (list-ref item 2)))
item)
(else item))))
verbose-definition)))
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