+ (let*
+ ((name-components (string-split name #\.))
+ (context-name 'Bottom)
+ (grob-name #f))
+
+ (if (> 2 (length name-components))
+ (set! grob-name (string->symbol (car name-components)))
+ (begin
+ (set! grob-name (string->symbol (list-ref name-components 1)))
+ (set! context-name (string->symbol (list-ref name-components 0)))))
+
+ (make-music 'ApplyOutputEvent
+ 'origin location
+ 'context-type context-name
+ 'procedure
+ (lambda (grob orig-context context)
+ (if (equal?
+ (cdr (assoc 'name (ly:grob-property grob 'meta)))
+ grob-name)
+ (set! (ly:grob-property grob property) value))))))
+
+%% These are music functions (iso music indentifiers), because music identifiers
+%% are not allowed at top-level.
+pageBreak =
+#(define-music-function (location parser) ()
+ (_i "Force a page break. May be used at toplevel (ie between scores or
+markups), or inside a score.")
+ (make-music 'EventChord
+ 'page-marker #t
+ 'line-break-permission 'force
+ 'page-break-permission 'force
+ 'elements (list (make-music 'LineBreakEvent
+ 'break-permission 'force)
+ (make-music 'PageBreakEvent
+ 'break-permission 'force))))
+
+noPageBreak =
+#(define-music-function (location parser) ()
+ (_i "Forbid a page break. May be used at toplevel (ie between scores or
+markups), or inside a score.")
+ (make-music 'EventChord
+ 'page-marker #t
+ 'page-break-permission 'forbid
+ 'elements (list (make-music 'PageBreakEvent
+ 'break-permission '()))))
+
+pageTurn =
+#(define-music-function (location parser) ()
+ (_i "Force a page turn between two scores or top-level markups.")
+ (make-music 'EventChord
+ 'page-marker #t
+ 'line-break-permission 'force
+ 'page-break-permission 'force
+ 'page-turn-permission 'force
+ 'elements (list (make-music 'LineBreakEvent
+ 'break-permission 'force)
+ (make-music 'PageBreakEvent
+ 'break-permission 'force)
+ (make-music 'PageTurnEvent
+ 'break-permission 'force))))
+
+noPageTurn =
+#(define-music-function (location parser) ()
+ (_i "Forbid a page turn. May be used at toplevel (ie between scores or
+markups), or inside a score.")
+ (make-music 'EventChord
+ 'page-marker #t
+ 'page-turn-permission 'forbid
+ 'elements (list (make-music 'PageTurnEvent
+ 'break-permission '()))))
+
+allowPageTurn =
+#(define-music-function (location parser) ()
+ (_i "Allow a page turn. May be used at toplevel (ie between scores or
+markups), or inside a score.")
+ (make-music 'EventChord
+ 'page-marker #t
+ 'page-turn-permission 'allow
+ 'elements (list (make-music 'PageTurnEvent
+ 'break-permission 'allow))))
+
+%% Todo:
+%% doing
+%% define-music-function in a .scm causes crash.
+
+octaveCheck =
+#(define-music-function (parser location pitch-note) (ly:music?)
+ (_i "octave check")
+
+ (make-music 'RelativeOctaveCheck
+ 'origin location
+ 'pitch (pitch-of-note pitch-note)
+ ))
+
+ottava = #(define-music-function (parser location octave) (number?)
+ (_i "set the octavation ")
+ (make-ottava-set octave))
+
+partcombine =
+#(define-music-function (parser location part1 part2) (ly:music? ly:music?)
+ (make-part-combine-music parser
+ (list part1 part2)))
+
+
+pitchedTrill =
+#(define-music-function
+ (parser location main-note secondary-note)
+ (ly:music? ly:music?)
+ (let*
+ ((get-notes (lambda (ev-chord)
+ (filter
+ (lambda (m) (eq? 'NoteEvent (ly:music-property m 'name)))
+ (ly:music-property ev-chord 'elements))))
+ (sec-note-events (get-notes secondary-note))
+ (trill-events (filter (lambda (m) (music-has-type m 'trill-span-event))
+ (ly:music-property main-note 'elements))))
+
+ (if (pair? sec-note-events)
+ (begin
+ (let*
+ ((trill-pitch (ly:music-property (car sec-note-events) 'pitch))
+ (forced (ly:music-property (car sec-note-events ) 'force-accidental)))
+
+ (if (ly:pitch? trill-pitch)
+ (for-each (lambda (m) (ly:music-set-property! m 'pitch trill-pitch))
+ trill-events)
+ (begin
+ (ly:warning (_ "Second argument of \\pitchedTrill should be single note: "))
+ (display sec-note-events)))
+
+ (if (eq? forced #t)
+ (for-each (lambda (m) (ly:music-set-property! m 'force-accidental forced))
+ trill-events)))))
+ main-note))
+
+
+
+%% for lambda*
+#(use-modules (ice-9 optargs))
+
+parallelMusic =
+#(define-music-function (parser location voice-ids music) (list? ly:music?)
+ (_i "Define parallel music sequences, separated by '|' (bar check signs),
+and assign them to the identifiers provided in @var{voice-ids}.
+
+@var{voice-ids}: a list of music identifiers (symbols containing only letters)
+
+@var{music}: a music sequence, containing BarChecks as limiting expressions.
+
+Example:
+
+@verbatim
+ \\parallelMusic #'(A B C) {
+ c c | d d | e e |
+ d d | e e | f f |
+ }
+<==>
+ A = { c c | d d | }
+ B = { d d | e e | }
+ C = { e e | f f | }
+@end verbatim
+")
+ (let* ((voices (apply circular-list (make-list (length voice-ids) (list))))
+ (current-voices voices)
+ (current-sequence (list)))
+ ;;
+ ;; utilities
+ (define (push-music m)
+ "Push the music expression into the current sequence"
+ (set! current-sequence (cons m current-sequence)))
+ (define (change-voice)
+ "Stores the previously built sequence into the current voice and
+ change to the following voice."
+ (list-set! current-voices 0 (cons (make-music 'SequentialMusic
+ 'elements (reverse! current-sequence))
+ (car current-voices)))
+ (set! current-sequence (list))
+ (set! current-voices (cdr current-voices)))
+ (define (bar-check? m)
+ "Checks whether m is a bar check."
+ (eq? (ly:music-property m 'name) 'BarCheck))
+ (define (music-origin music)
+ "Recursively search an origin location stored in music."
+ (cond ((null? music) #f)
+ ((not (null? (ly:music-property music 'origin)))
+ (ly:music-property music 'origin))
+ (else (or (music-origin (ly:music-property music 'element))
+ (let ((origins (remove not (map music-origin
+ (ly:music-property music 'elements)))))
+ (and (not (null? origins)) (car origins)))))))
+ ;;
+ ;; first, split the music and fill in voices
+ (map-in-order (lambda (m)
+ (push-music m)
+ (if (bar-check? m) (change-voice)))
+ (ly:music-property music 'elements))
+ (if (not (null? current-sequence)) (change-voice))
+ ;; un-circularize `voices' and reorder the voices
+ (set! voices (map-in-order (lambda (dummy seqs)
+ (reverse! seqs))
+ voice-ids voices))
+ ;;
+ ;; set origin location of each sequence in each voice
+ ;; for better type error tracking
+ (for-each (lambda (voice)
+ (for-each (lambda (seq)
+ (set! (ly:music-property seq 'origin)
+ (or (music-origin seq) location)))
+ voice))
+ voices)
+ ;;
+ ;; check sequence length
+ (apply for-each (lambda* (#:rest seqs)
+ (let ((moment-reference (ly:music-length (car seqs))))
+ (for-each (lambda (seq moment)
+ (if (not (equal? moment moment-reference))
+ (ly:music-message seq
+ "Bars in parallel music don't have the same length")))
+ seqs (map-in-order ly:music-length seqs))))
+ voices)
+ ;;
+ ;; bind voice identifiers to the voices
+ (map (lambda (voice-id voice)
+ (ly:parser-define! parser voice-id
+ (make-music 'SequentialMusic
+ 'origin location
+ 'elements voice)))
+ voice-ids voices))
+ ;; Return an empty sequence. this function is actually a "void" function.
+ (make-music 'SequentialMusic 'void #t))
+
+
+
+parenthesize =
+#(define-music-function (parser loc arg) (ly:music?)
+ (_i "Tag @var{arg} to be parenthesized.")
+
+ (if (memq 'event-chord (ly:music-property arg 'types))
+ ; arg is an EventChord -> set the parenthesize property on all child notes and rests
+ (map
+ (lambda (ev)
+ (if (or (memq 'note-event (ly:music-property ev 'types))
+ (memq 'rest-event (ly:music-property ev 'types)))
+ (set! (ly:music-property ev 'parenthesize) #t)))
+ (ly:music-property arg 'elements))
+ ; No chord, simply set property for this expression:
+ (set! (ly:music-property arg 'parenthesize) #t))
+ arg)
+
+
+quoteDuring = #
+(define-music-function
+ (parser location what main-music)
+ (string? ly:music?)
+ (make-music 'QuoteMusic
+ 'element main-music
+ 'quoted-music-name what
+ 'origin location))
+
+
+
+resetRelativeOctave =
+#(define-music-function
+ (parser location reference-note)
+ (ly:music?)
+ (_i "Set the octave inside a \\relative section.")
+
+ (let*
+ ((notes (ly:music-property reference-note 'elements))
+ (pitch (ly:music-property (car notes) 'pitch)))
+
+ (set! (ly:music-property reference-note 'elements) '())
+ (set! (ly:music-property reference-note
+ 'to-relative-callback)
+ (lambda (music last-pitch)
+ pitch))
+
+ reference-note))
+
+
+scaleDurations =
+#(define-music-function
+ (parser location fraction music) (number-pair? ly:music?)
+ (ly:music-compress music (ly:make-moment (car fraction) (cdr fraction))))
+
+
+
+shiftDurations =
+#(define-music-function (parser location dur dots arg) (integer? integer? ly:music?)
+ (_i "")
+
+ (music-map
+ (lambda (x)
+ (shift-one-duration-log x dur dots)) arg))
+
+spacingTweaks =
+#(define-music-function (parser location parameters) (list?)
+ (_i "Set the system stretch, by reading the 'system-stretch property of
+the `parameters' assoc list.")
+ #{
+ \overrideProperty #"Score.NonMusicalPaperColumn"
+ #'line-break-system-details
+ #$(list (cons 'alignment-extra-space (cdr (assoc 'system-stretch parameters)))
+ (cons 'system-Y-extent (cdr (assoc 'system-Y-extent parameters))))
+ #})
+
+
+rightHandFinger =
+#(define-music-function (parser location finger) (number-or-string?)
+ (_i "Define a StrokeFingerEvent")
+
+ (apply make-music
+ (append
+ (list
+ 'StrokeFingerEvent
+ 'origin location)
+ (if (string? finger)
+ (list 'text finger)
+ (list 'digit finger)))))
+
+scoreTweak =
+#(define-music-function (parser location name) (string?)
+ (_i "Include the score tweak, if exists.")
+ (if (and page-layout-parser (not (ly:get-option 'dump-tweaks)))
+ (let ((tweak-music (ly:parser-lookup page-layout-parser
+ (string->symbol name))))
+ (if (ly:music? tweak-music)
+ tweak-music
+ (make-music 'SequentialMusic)))
+ (make-music 'SequentialMusic)))
+
+
+tag = #(define-music-function (parser location tag arg)
+ (symbol? ly:music?)
+
+ (_i "Add @var{tag} to the @code{tags} property of @var{arg}.")
+
+ (set!
+ (ly:music-property arg 'tags)
+ (cons tag
+ (ly:music-property arg 'tags)))
+ arg)
+
+
+
+transposedCueDuring =
+#(define-music-function
+ (parser location what dir pitch-note main-music)
+ (string? ly:dir? ly:music? ly:music?)
+
+ (_i "Insert notes from the part @var{what} into a voice called @code{cue},
+using the transposition defined by @var{pitch-note}. This happens
+simultaneously with @var{main-music}, which is usually a rest. The
+argument @var{dir} determines whether the cue notes should be notated
+as a first or second voice.")
+
+ (make-music 'QuoteMusic
+ 'element main-music
+ 'quoted-context-type 'Voice
+ 'quoted-context-id "cue"
+ 'quoted-music-name what
+ 'quoted-voice-direction dir
+ 'quoted-transposition (pitch-of-note pitch-note)
+ 'origin location))
+
+
+
+transposition =
+#(define-music-function (parser location pitch-note) (ly:music?)
+ (_i "Set instrument transposition")
+
+ (context-spec-music
+ (make-property-set 'instrumentTransposition
+ (ly:pitch-negate (pitch-of-note pitch-note)))
+ 'Staff))
+
+tweak = #(define-music-function (parser location sym val arg)
+ (symbol? scheme? ly:music?)
+
+ (_i "Add @code{sym . val} to the @code{tweaks} property of @var{arg}.")
+
+ (set!
+ (ly:music-property arg 'tweaks)
+ (acons sym val
+ (ly:music-property arg 'tweaks)))
+ arg)
+
+
+
+unfoldRepeats =
+#(define-music-function (parser location music) (ly:music?)
+ (unfold-repeats music))