1 %%%% -*- Mode: Scheme -*-
3 %%%% This file is part of LilyPond, the GNU music typesetter.
5 %%%% Copyright (C) 2003--2010 Han-Wen Nienhuys <hanwen@xs4all.nl>
6 %%%% Jan Nieuwenhuizen <janneke@gnu.org>
8 %%%% LilyPond is free software: you can redistribute it and/or modify
9 %%%% it under the terms of the GNU General Public License as published by
10 %%%% the Free Software Foundation, either version 3 of the License, or
11 %%%% (at your option) any later version.
13 %%%% LilyPond is distributed in the hope that it will be useful,
14 %%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
15 %%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 %%%% GNU General Public License for more details.
18 %%%% You should have received a copy of the GNU General Public License
19 %%%% along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
24 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
25 %% this file is alphabetically sorted.
26 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
28 %% need SRFI-1 for filter; optargs for lambda*
29 #(use-modules (srfi srfi-1)
32 %% TODO: using define-music-function in a .scm causes crash.
35 #(def-grace-function startAcciaccaturaMusic stopAcciaccaturaMusic
36 (_i "Create an acciaccatura from the following music expression"))
38 %% keep these two together
39 "instrument-definitions" = #'()
40 addInstrumentDefinition =
41 #(define-music-function
42 (parser location name lst) (string? list?)
43 (_i "Create instrument @var{name} with properties @var{list}.")
44 (set! instrument-definitions (acons name lst instrument-definitions))
45 (make-music 'SequentialMusic 'void #t))
48 #(define-music-function (parser location name music) (string? ly:music?)
49 (_i "Define @var{music} as a quotable music expression named
51 (add-quotable parser name music)
52 (make-music 'SequentialMusic 'void #t))
54 %% keep these two together
55 afterGraceFraction = #(cons 6 8)
57 #(define-music-function (parser location main grace) (ly:music? ly:music?)
58 (_i "Create @var{grace} note(s) after a @var{main} music expression.")
59 (let ((main-length (ly:music-length main))
60 (fraction (ly:parser-lookup parser 'afterGraceFraction)))
61 (make-simultaneous-music
64 (make-sequential-music
67 (make-music 'SkipMusic
68 'duration (ly:make-duration
70 (* (ly:moment-main-numerator main-length)
72 (* (ly:moment-main-denominator main-length)
74 (make-music 'GraceMusic
78 %% music identifiers not allowed at top-level,
79 %% so this is a music-function instead.
81 #(define-music-function (location parser) ()
82 (_i "Allow a page turn. May be used at toplevel (ie between scores or
83 markups), or inside a score.")
84 (make-music 'EventChord
86 'page-turn-permission 'allow
87 'elements (list (make-music 'PageTurnEvent
88 'break-permission 'allow))))
91 #(define-music-function (parser location proc) (procedure?)
92 (_i "Modify context properties with Scheme procedure @var{proc}.")
93 (make-music 'ApplyContext
98 #(define-music-function (parser location func music) (procedure? ly:music?)
99 (_i"Apply procedure @var{func} to @var{music}.")
103 #(define-music-function (parser location ctx proc) (symbol? procedure?)
104 (_i "Apply function @code{proc} to every layout object in context @code{ctx}")
105 (make-music 'ApplyOutputEvent
111 #(def-grace-function startAppoggiaturaMusic stopAppoggiaturaMusic
112 (_i "Create an appoggiatura from @var{music}"))
114 % for regression testing purposes.
116 #(define-music-function (parser location l r) (pair? pair?)
117 (_i "Testing function: check whether the beam quants @var{l} and @var{r} are correct")
118 (make-grob-property-override 'Beam 'positions
119 (ly:make-simple-closure
120 (ly:make-simple-closure
122 (list chain-grob-member-functions `(,cons 0 0))
123 (check-quant-callbacks l r))))))
125 % for regression testing purposes.
127 #(define-music-function (parser location comp) (procedure?)
128 (_i "Testing function: check whether the slope of the beam is the same as @code{comp}")
129 (make-grob-property-override 'Beam 'positions
130 (ly:make-simple-closure
131 (ly:make-simple-closure
133 (list chain-grob-member-functions `(,cons 0 0))
134 (check-slope-callbacks comp))))))
137 #(define-music-function (parser location music) (ly:music?)
138 (_i "Make voices that switch between staves automatically")
139 (make-autochange-music parser music))
144 #(define-music-function (parser location grob-name offset text)
145 (symbol? number-pair? markup?)
146 (_i "Attach @var{text} to @var{grob-name} at offset @var{offset}
147 (use like @code{\\once})")
148 (make-music 'AnnotateOutputEvent
150 'X-offset (car offset)
151 'Y-offset (cdr offset)
155 #(define-music-function (parser location offset text) (number-pair? markup?)
156 (_i "Attach @var{text} at @var{offset} (use like @code{\\tweak})")
157 (make-music 'AnnotateOutputEvent
158 'X-offset (car offset)
159 'Y-offset (cdr offset)
163 #(define-music-function (parser location type) (string?)
164 (_i "Insert a bar line of type @var{type}")
166 (make-property-set 'whichBar type)
170 #(define-music-function (parser location n) (integer?)
171 (_i "Print a warning if the current bar number is not @var{n}.")
172 (make-music 'ApplyContext
176 (let ((cbn (ly:context-property c 'currentBarNumber)))
177 (if (and (number? cbn) (not (= cbn n)))
178 (ly:input-message location
179 "Barcheck failed got ~a expect ~a"
183 #(define-music-function (parser location delta) (real?)
184 (_i "Create a fall or doit of pitch interval @var{delta}.")
185 (make-music 'BendAfterEvent
189 #(define-music-function (parser location newfilename) (string?)
190 (_i "Direct output for the current book block to @var{newfilename}.")
191 (set! book-filename newfilename)
192 (make-music 'SequentialMusic 'void #t))
195 #(define-music-function (parser location newsuffix) (string?)
196 (_i "Set the output filename suffix for the current book block to
198 (set! book-output-suffix newsuffix)
199 (make-music 'SequentialMusic 'void #t))
201 %% \breathe is defined as a music function rather than an event identifier to
202 %% ensure it gets useful input location information: as an event identifier,
203 %% it would have to be wrapped in an EventChord to prevent it from being
204 %% treated as a post_event by the parser
206 #(define-music-function (parser location) ()
207 (_i "Insert a breath mark.")
208 (make-music 'BreathingEvent))
213 #(define-music-function (parser location type) (string?)
214 (_i "Set the current clef to @var{type}.")
215 (make-clef-set type))
218 #(define-music-function
219 (parser location what dir main-music) (string? ly:dir? ly:music?)
220 (_i "Insert contents of quote @var{what} corresponding to @var{main-music},
221 in a CueVoice oriented by @var{dir}.")
222 (make-music 'QuoteMusic
224 'quoted-context-type 'Voice
225 'quoted-context-id "cue"
226 'quoted-music-name what
227 'quoted-voice-direction dir
233 #(define-music-function (parser location music) (ly:music?)
234 (_i "Display the LilyPond input representation of @var{music}
237 (display-lily-music music parser)
241 #(define-music-function (parser location music) (ly:music?)
242 (_i "Display the internal representation of @var{music} to the console.")
244 (display-scheme-music music)
250 #(define-music-function (parser location music) (ly:music?)
251 (_i "Terminate the next spanner prematurely after exactly one note
252 without the need of a specific end spanner.")
253 (if (eq? (ly:music-property music 'name) 'EventChord)
254 (let* ((elts (ly:music-property music 'elements))
255 (start-span-evs (filter (lambda (ev)
256 (and (music-has-type ev 'span-event)
257 (equal? (ly:music-property ev 'span-direction)
262 (let ((c (music-clone m)))
263 (set! (ly:music-property c 'span-direction) STOP)
266 (end-ev-chord (make-music 'EventChord
267 'elements stop-span-evs))
268 (total (make-music 'SequentialMusic
269 'elements (list music
273 (ly:input-message location (_ "argument endSpanners is not an EventChord: ~a" music))))
278 #(define-music-function (parser location factor argument) (ly:moment? ly:music?)
279 (_i "Adjust durations of music in @var{argument} by rational @var{factor}.")
280 (let ((orig-duration (ly:music-length argument))
281 (multiplier (ly:make-moment 1 1)))
285 (if (and (eq? (ly:music-property mus 'name) 'EventChord)
286 (< 0 (ly:moment-main-denominator (ly:music-length mus))))
288 (ly:music-compress mus multiplier)
289 (set! multiplier (ly:moment-mul factor multiplier))))
295 (ly:moment-div orig-duration (ly:music-length argument)))
302 #(def-grace-function startGraceMusic stopGraceMusic
303 (_i "Insert @var{music} as grace notes."))
305 harmonicByFret = #(define-music-function (parser location fret music) (number? ly:music?)
306 (let* ((fret (number->string fret))
307 (pitch (fret->pitch fret)))
308 (make-sequential-music
311 \override TabNoteHead #'stencil = #(tab-note-head::print-custom-fret-label $fret)
314 (calc-harmonic-pitch pitch music))
316 \revert TabNoteHead #'stencil
319 harmonicByRatio = #(define-music-function (parser location ratio music) (number? ly:music?)
320 (let ((pitch (ratio->pitch ratio))
321 (fret (ratio->fret ratio)))
322 (make-sequential-music
325 \override TabNoteHead #'stencil = #(tab-note-head::print-custom-fret-label $fret)
328 (calc-harmonic-pitch pitch music))
330 \revert TabNoteHead #'stencil
334 #(define-music-function
335 (parser location name) (string?)
336 (_i "Switch instrument to @var{name}, which must be predefined with
337 @code{\\addInstrumentDefinition}.")
338 (let* ((handle (assoc name instrument-definitions))
339 (instrument-def (if handle (cdr handle) '())))
342 (ly:input-message location "No such instrument: ~a" name))
344 (make-music 'SimultaneousMusic
356 #(define-music-function (parser location tag music) (symbol? ly:music?)
357 (_i "Include only elements of @var{music} that are tagged with @var{tag}.")
360 (let* ((tags (ly:music-property m 'tags))
361 (res (memq tag tags)))
368 #(define-music-function (parser location music) (ly:music?)
369 (_i "Remove cue notes from @var{music}.")
372 (if (and (string? (ly:music-property mus 'quoted-music-name))
373 (string=? (ly:music-property mus 'quoted-context-id "") "cue"))
374 (ly:music-property mus 'element)
381 #(define-music-function (parser location label) (symbol?)
382 (_i "Create @var{label} as a bookmarking label.")
383 (make-music 'EventChord
386 'elements (list (make-music 'LabelEvent
387 'page-label label))))
391 #(define-music-function (parser location str) (string?)
392 (_i "Select note names language.")
393 (let ((language (assoc-get (string->symbol str)
398 (if (ly:get-option 'verbose)
399 (ly:message (_ "Using ~a note names...") str))
400 (set! pitchnames language)
401 (ly:parser-set-note-names parser language))
402 (ly:warning (_ "Could not find language ~a. Ignoring.") str))
403 (make-music 'Music 'void #t)))
407 #(define-music-function (parser location arg) (ly:music?)
408 (_i "Display chords in @var{arg} as clusters.")
409 (music-map note-to-cluster arg))
412 #(define-music-function (parser location proc mus) (procedure? ly:music?)
413 (_i "Apply @var{proc} to @var{mus} and all of the music it contains.")
414 (music-map proc mus))
418 %% noPageBreak and noPageTurn are music functions (not music indentifiers),
419 %% because music identifiers are not allowed at top-level.
421 #(define-music-function (location parser) ()
422 (_i "Forbid a page break. May be used at toplevel (i.e., between scores or
423 markups), or inside a score.")
424 (make-music 'EventChord
426 'page-break-permission 'forbid
427 'elements (list (make-music 'PageBreakEvent
428 'break-permission '()))))
431 #(define-music-function (location parser) ()
432 (_i "Forbid a page turn. May be used at toplevel (i.e., between scores or
433 markups), or inside a score.")
434 (make-music 'EventChord
436 'page-turn-permission 'forbid
437 'elements (list (make-music 'PageTurnEvent
438 'break-permission '()))))
443 #(define-music-function (parser location pitch-note) (ly:music?)
445 (make-music 'RelativeOctaveCheck
447 'pitch (pitch-of-note pitch-note)))
450 #(define-music-function (parser location octave) (integer?)
451 (_i "Set the octavation.")
452 (make-music 'OttavaMusic
453 'ottava-number octave))
455 overrideTimeSignatureSettings =
456 #(define-music-function
457 (parser location context time-signature base-moment beat-structure beam-exceptions)
458 (symbol? pair? pair? cheap-list? cheap-list?)
460 (_i "Override @code{timeSignatureSettings} in @var{context}
461 for time signatures of @var{time-signature} to have settings
462 of @var{base-moment}, @var{beat-structure}, and @var{beam-exceptions}.")
464 ;; TODO -- add warning if largest value of grouping is
465 ;; greater than time-signature.
466 (let ((setting (make-setting base-moment beat-structure beam-exceptions)))
467 (override-time-signature-setting time-signature setting context)))
470 #(define-music-function (parser location name property value)
471 (string? symbol? scheme?)
473 (_i "Set @var{property} to @var{value} in all grobs named @var{name}.
474 The @var{name} argument is a string of the form @code{\"Context.GrobName\"}
475 or @code{\"GrobName\"}.")
477 (let ((name-components (string-split name #\.))
478 (context-name 'Bottom)
481 (if (> 2 (length name-components))
482 (set! grob-name (string->symbol (car name-components)))
484 (set! grob-name (string->symbol (list-ref name-components 1)))
485 (set! context-name (string->symbol (list-ref name-components 0)))))
487 (make-music 'ApplyOutputEvent
489 'context-type context-name
491 (lambda (grob orig-context context)
493 (cdr (assoc 'name (ly:grob-property grob 'meta)))
495 (set! (ly:grob-property grob property) value))))))
499 %% pageBreak and pageTurn are music functions (iso music indentifiers),
500 %% because music identifiers are not allowed at top-level.
502 #(define-music-function (location parser) ()
503 (_i "Force a page break. May be used at toplevel (i.e., between scores or
504 markups), or inside a score.")
505 (make-music 'EventChord
507 'line-break-permission 'force
508 'page-break-permission 'force
509 'elements (list (make-music 'LineBreakEvent
510 'break-permission 'force)
511 (make-music 'PageBreakEvent
512 'break-permission 'force))))
515 #(define-music-function (location parser) ()
516 (_i "Force a page turn between two scores or top-level markups.")
517 (make-music 'EventChord
519 'line-break-permission 'force
520 'page-break-permission 'force
521 'page-turn-permission 'force
522 'elements (list (make-music 'LineBreakEvent
523 'break-permission 'force)
524 (make-music 'PageBreakEvent
525 'break-permission 'force)
526 (make-music 'PageTurnEvent
527 'break-permission 'force))))
530 #(define-music-function (parser location voice-ids music) (list? ly:music?)
531 (_i "Define parallel music sequences, separated by '|' (bar check signs),
532 and assign them to the identifiers provided in @var{voice-ids}.
534 @var{voice-ids}: a list of music identifiers (symbols containing only letters)
536 @var{music}: a music sequence, containing BarChecks as limiting expressions.
541 \\parallelMusic #'(A B C) {
551 (let* ((voices (apply circular-list (make-list (length voice-ids) (list))))
552 (current-voices voices)
553 (current-sequence (list)))
556 (define (push-music m)
557 "Push the music expression into the current sequence"
558 (set! current-sequence (cons m current-sequence)))
559 (define (change-voice)
560 "Stores the previously built sequence into the current voice and
561 change to the following voice."
562 (list-set! current-voices 0 (cons (make-music 'SequentialMusic
563 'elements (reverse! current-sequence))
564 (car current-voices)))
565 (set! current-sequence (list))
566 (set! current-voices (cdr current-voices)))
567 (define (bar-check? m)
568 "Checks whether m is a bar check."
569 (eq? (ly:music-property m 'name) 'BarCheck))
570 (define (music-origin music)
571 "Recursively search an origin location stored in music."
572 (cond ((null? music) #f)
573 ((not (null? (ly:music-property music 'origin)))
574 (ly:music-property music 'origin))
575 (else (or (music-origin (ly:music-property music 'element))
576 (let ((origins (remove not (map music-origin
577 (ly:music-property music 'elements)))))
578 (and (not (null? origins)) (car origins)))))))
580 ;; first, split the music and fill in voices
581 (map-in-order (lambda (m)
583 (if (bar-check? m) (change-voice)))
584 (ly:music-property music 'elements))
585 (if (not (null? current-sequence)) (change-voice))
586 ;; un-circularize `voices' and reorder the voices
587 (set! voices (map-in-order (lambda (dummy seqs)
591 ;; set origin location of each sequence in each voice
592 ;; for better type error tracking
593 (for-each (lambda (voice)
594 (for-each (lambda (seq)
595 (set! (ly:music-property seq 'origin)
596 (or (music-origin seq) location)))
600 ;; check sequence length
601 (apply for-each (lambda* (#:rest seqs)
602 (let ((moment-reference (ly:music-length (car seqs))))
603 (for-each (lambda (seq moment)
604 (if (not (equal? moment moment-reference))
605 (ly:music-message seq
606 "Bars in parallel music don't have the same length")))
607 seqs (map-in-order ly:music-length seqs))))
610 ;; bind voice identifiers to the voices
611 (map (lambda (voice-id voice)
612 (ly:parser-define! parser voice-id
613 (make-music 'SequentialMusic
617 ;; Return an empty sequence. This function is actually a "void" function.
618 (make-music 'SequentialMusic 'void #t))
621 #(define-music-function (parser loc arg) (ly:music?)
622 (_i "Tag @var{arg} to be parenthesized.")
624 (if (memq 'event-chord (ly:music-property arg 'types))
625 ;; arg is an EventChord -> set the parenthesize property
626 ;; on all child notes and rests
629 (if (or (memq 'note-event (ly:music-property ev 'types))
630 (memq 'rest-event (ly:music-property ev 'types)))
631 (set! (ly:music-property ev 'parenthesize) #t)))
632 (ly:music-property arg 'elements))
633 ;; No chord, simply set property for this expression:
634 (set! (ly:music-property arg 'parenthesize) #t))
638 #(define-music-function (parser location part1 part2) (ly:music? ly:music?)
639 (_i "Take the music in @var{part1} and @var{part2} and typeset so
640 that they share a staff.")
641 (make-part-combine-music parser
645 #(define-music-function (location parser type once) (symbol-or-boolean? boolean?)
646 (_i "Override the part-combiner.")
647 (make-music 'EventChord
648 'elements (list (make-music 'PartCombineForceEvent
651 partcombineApart = \partcombineForce #'apart ##f
652 partcombineApartOnce = \partcombineForce #'apart ##t
653 partcombineChords = \partcombineForce #'chords ##f
654 partcombineChordsOnce = \partcombineForce #'chords ##t
655 partcombineUnisono = \partcombineForce #'unisono ##f
656 partcombineUnisonoOnce = \partcombineForce #'unisono ##t
657 partcombineSoloI = \partcombineForce #'solo1 ##f
658 partcombineSoloIOnce = \partcombineForce #'solo1 ##t
659 partcombineSoloII = \partcombineForce #'solo2 ##f
660 partcombineSoloIIOnce = \partcombineForce #'solo2 ##t
661 partcombineAutomatic = \partcombineForce ##f ##f
662 partcombineAutomaticOnce = \partcombineForce ##f ##t
666 #(define-music-function
667 (parser location main-note secondary-note)
668 (ly:music? ly:music?)
669 (_i "Print a trill with @var{main-note} as the main note of the trill and
670 print @var{secondary-note} as a stemless note head in parentheses.")
671 (let* ((get-notes (lambda (ev-chord)
673 (lambda (m) (eq? 'NoteEvent (ly:music-property m 'name)))
674 (ly:music-property ev-chord 'elements))))
675 (sec-note-events (get-notes secondary-note))
676 (trill-events (filter (lambda (m) (music-has-type m 'trill-span-event))
677 (ly:music-property main-note 'elements))))
679 (if (pair? sec-note-events)
681 (let* ((trill-pitch (ly:music-property (car sec-note-events) 'pitch))
682 (forced (ly:music-property (car sec-note-events) 'force-accidental)))
684 (if (ly:pitch? trill-pitch)
685 (for-each (lambda (m)
686 (ly:music-set-property! m 'pitch trill-pitch)) trill-events)
688 (ly:warning (_ "Second argument of \\pitchedTrill should be single note: "))
689 (display sec-note-events)))
692 (for-each (lambda (m)
693 (ly:music-set-property! m 'force-accidental forced))
698 #(define-music-function (parser location what main-music) (string? ly:music?)
699 (_i "Indicate a section of music to be quoted. @var{what} indicates the name
700 of the quoted voice, as specified in an @code{\\addQuote} command.
701 @var{main-music} is used to indicate the length of music to be quoted;
702 usually contains spacers or multi-measure rests.")
703 (make-music 'QuoteMusic
705 'quoted-music-name what
709 #(define-music-function (parser location tag music) (symbol? ly:music?)
710 (_i "Remove elements of @var{music} that are tagged with @var{tag}.")
713 (let* ((tags (ly:music-property m 'tags))
714 (res (memq tag tags)))
718 resetRelativeOctave =
719 #(define-music-function (parser location reference-note) (ly:music?)
720 (_i "Set the octave inside a \\relative section.")
722 (let* ((notes (ly:music-property reference-note 'elements))
723 (pitch (ly:music-property (car notes) 'pitch)))
725 (set! (ly:music-property reference-note 'elements) '())
726 (set! (ly:music-property reference-note 'to-relative-callback)
727 (lambda (music last-pitch)
732 revertTimeSignatureSettings =
733 #(define-music-function
734 (parser location context time-signature)
737 (_i "Revert @code{timeSignatureSettings} in @var{context}
738 for time signatures of @var{time-signature}.")
739 (revert-time-signature-setting time-signature context))
742 #(define-music-function (parser location finger) (number-or-string?)
743 (_i "Apply @var{finger} as a fingering indication.")
752 (list 'digit finger)))))
757 #(define-music-function (parser location fraction music)
758 (number-pair? ly:music?)
759 (_i "Multiply the duration of events in @var{music} by @var{fraction}.")
760 (ly:music-compress music
761 (ly:make-moment (car fraction) (cdr fraction))))
764 #(define-music-function (parser location dur dots arg)
765 (integer? integer? ly:music?)
766 (_i "Scale @var{arg} up by a factor of @var{2^dur*(2-(1/2)^dots)}.")
770 (shift-one-duration-log x dur dots)) arg))
773 #(define-music-function (parser location parameters) (list?)
774 (_i "Set the system stretch, by reading the 'system-stretch property of
775 the `parameters' assoc list.")
777 \overrideProperty #"Score.NonMusicalPaperColumn"
778 #'line-break-system-details
779 #$(list (cons 'alignment-extra-space (cdr (assoc 'system-stretch parameters)))
780 (cons 'system-Y-extent (cdr (assoc 'system-Y-extent parameters))))
784 #(define-music-function (parser location style heads music)
785 (symbol? list-or-symbol? ly:music?)
786 (_i "Set @var{heads} in @var{music} to @var{style}.")
787 (style-note-heads heads style music))
792 #(define-music-function (parser location) ()
793 (_i "Include the string information in a chord repetition.")
794 (ly:parser-set-repetition-function parser tab-repeat-chord)
795 (make-music 'SequentialMusic 'void #t))
798 #(define-music-function (parser location tag arg) (symbol? ly:music?)
800 (_i "Add @var{tag} to the @code{tags} property of @var{arg}.")
803 (ly:music-property arg 'tags)
805 (ly:music-property arg 'tags)))
808 transposedCueDuring =
809 #(define-music-function
810 (parser location what dir pitch-note main-music)
811 (string? ly:dir? ly:music? ly:music?)
813 (_i "Insert notes from the part @var{what} into a voice called @code{cue},
814 using the transposition defined by @var{pitch-note}. This happens
815 simultaneously with @var{main-music}, which is usually a rest. The
816 argument @var{dir} determines whether the cue notes should be notated
817 as a first or second voice.")
819 (make-music 'QuoteMusic
821 'quoted-context-type 'Voice
822 'quoted-context-id "cue"
823 'quoted-music-name what
824 'quoted-voice-direction dir
825 'quoted-transposition (pitch-of-note pitch-note)
829 #(define-music-function (parser location pitch-note) (ly:music?)
830 (_i "Set instrument transposition")
833 (make-property-set 'instrumentTransposition
834 (ly:pitch-negate (pitch-of-note pitch-note)))
838 #(define-music-function (parser location sym val arg)
839 (symbol? scheme? ly:music?)
840 (_i "Add @code{sym . val} to the @code{tweaks} property of @var{arg}.")
842 (if (equal? (object-property sym 'backend-type?) #f)
844 (ly:warning (_ "cannot find property type-check for ~a") sym)
845 (ly:warning (_ "doing assignment anyway"))))
847 (ly:music-property arg 'tweaks)
849 (ly:music-property arg 'tweaks)))
855 #(define-music-function (parser location music) (ly:music?)
856 (_i "Force any @code{\\repeat volta}, @code{\\repeat tremolo} or
857 @code{\\repeat percent} commands in @var{music} to be interpreted
858 as @code{\\repeat unfold}.")
859 (unfold-repeats music))
864 #(define-music-function (parser location sym val music)
865 (symbol? scheme? ly:music?)
866 (_i "Set @var{sym} to @var{val} in @var{music}.")
868 (set! (ly:music-property music sym) val)