1 %%%% -*- Mode: Scheme -*-
3 %%%% This file is part of LilyPond, the GNU music typesetter.
5 %%%% Copyright (C) 2003--2011 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
97 #(define-music-function (parser location func music) (procedure? ly:music?)
98 (_i"Apply procedure @var{func} to @var{music}.")
102 #(define-music-function (parser location ctx proc) (symbol? procedure?)
103 (_i "Apply function @code{proc} to every layout object in context @code{ctx}")
104 (make-music 'ApplyOutputEvent
109 #(def-grace-function startAppoggiaturaMusic stopAppoggiaturaMusic
110 (_i "Create an appoggiatura from @var{music}"))
112 % for regression testing purposes.
114 #(define-music-function (parser location l r) (pair? pair?)
115 (_i "Testing function: check whether the beam quants @var{l} and @var{r} are correct")
116 (make-grob-property-override 'Beam 'positions
117 (ly:make-simple-closure
118 (ly:make-simple-closure
120 (list chain-grob-member-functions `(,cons 0 0))
121 (check-quant-callbacks l r))))))
123 % for regression testing purposes.
125 #(define-music-function (parser location comp) (procedure?)
126 (_i "Testing function: check whether the slope of the beam is the same as @code{comp}")
127 (make-grob-property-override 'Beam 'positions
128 (ly:make-simple-closure
129 (ly:make-simple-closure
131 (list chain-grob-member-functions `(,cons 0 0))
132 (check-slope-callbacks comp))))))
135 #(define-music-function (parser location music) (ly:music?)
136 (_i "Make voices that switch between staves automatically")
137 (make-autochange-music parser music))
142 #(define-music-function (parser location grob-name offset text)
143 (symbol? number-pair? markup?)
144 (_i "Attach @var{text} to @var{grob-name} at offset @var{offset}
145 (use like @code{\\once})")
146 (make-music 'AnnotateOutputEvent
148 'X-offset (car offset)
149 'Y-offset (cdr offset)
153 #(define-music-function (parser location offset text) (number-pair? markup?)
154 (_i "Attach @var{text} at @var{offset} (use like @code{\\tweak})")
155 (make-music 'AnnotateOutputEvent
156 'X-offset (car offset)
157 'Y-offset (cdr offset)
161 #(define-music-function (parser location type) (string?)
162 (_i "Insert a bar line of type @var{type}")
164 (make-property-set 'whichBar type)
168 #(define-music-function (parser location n) (integer?)
169 (_i "Print a warning if the current bar number is not @var{n}.")
170 (make-music 'ApplyContext
173 (let ((cbn (ly:context-property c 'currentBarNumber)))
174 (if (and (number? cbn) (not (= cbn n)))
175 (ly:input-message location
176 "Barcheck failed got ~a expect ~a"
180 #(define-music-function (parser location delta) (real?)
181 (_i "Create a fall or doit of pitch interval @var{delta}.")
182 (make-music 'BendAfterEvent
186 #(define-music-function (parser location newfilename) (string?)
187 (_i "Direct output for the current book block to @var{newfilename}.")
188 (set! book-filename newfilename)
189 (make-music 'SequentialMusic 'void #t))
192 #(define-music-function (parser location newsuffix) (string?)
193 (_i "Set the output filename suffix for the current book block to
195 (set! book-output-suffix newsuffix)
196 (make-music 'SequentialMusic 'void #t))
198 %% \breathe is defined as a music function rather than an event identifier to
199 %% ensure it gets useful input location information: as an event identifier,
200 %% it would have to be wrapped in an EventChord to prevent it from being
201 %% treated as a post_event by the parser
203 #(define-music-function (parser location) ()
204 (_i "Insert a breath mark.")
205 (make-music 'BreathingEvent))
210 #(define-music-function (parser location type) (string?)
211 (_i "Set the current clef to @var{type}.")
212 (make-clef-set type))
216 #(define-music-function (parser location args) (pair?)
217 (_i "Create compound time signatures. The argument is a Scheme list of
218 lists. Each list describes one fraction, with the last entry being the
219 denominator, while the first entries describe the summands in the
220 enumerator. If the time signature consists of just one fraction,
221 the list can be given directly, i.e. not as a list containing a single list.
222 For example, a time signature of (3+1)/8 + 2/4 would be created as
223 @code{\\compoundMeter #'((3 1 8) (2 4))}, and a time signature of (3+2)/8
224 as @code{\\compoundMeter #'((3 2 8))} or shorter
225 @code{\\compoundMeter #'(3 2 8)}.")
226 (let* ((mlen (calculate-compound-measure-length args))
227 (beat (calculate-compound-base-beat args))
228 (beatGrouping (calculate-compound-beat-grouping args))
229 (timesig (cons (ly:moment-main-numerator mlen)
230 (ly:moment-main-denominator mlen))))
232 \once \override Staff.TimeSignature #'stencil = #(lambda (grob)
233 (grob-interpret-markup grob (format-compound-time $args)))
234 \set Timing.timeSignatureFraction = $timesig
235 \set Timing.baseMoment = $beat
236 \set Timing.beatStructure = $beatGrouping
237 \set Timing.beamExceptions = #'()
238 \set Timing.measureLength = $mlen
243 #(define-music-function (parser location type) (string?)
244 (_i "Set the current cue clef to @var{type}.")
245 (make-cue-clef-set type))
247 #(define-music-function (parser location) ()
248 (_i "Unset the current cue clef.")
249 (make-cue-clef-unset))
252 #(define-music-function
253 (parser location what dir main-music) (string? ly:dir? ly:music?)
254 (_i "Insert contents of quote @var{what} corresponding to @var{main-music},
255 in a CueVoice oriented by @var{dir}.")
256 (make-music 'QuoteMusic
258 'quoted-context-type 'Voice
259 'quoted-context-id "cue"
260 'quoted-music-name what
261 'quoted-voice-direction dir))
264 #(define-music-function
265 (parser location what dir clef main-music) (string? ly:dir? string? ly:music?)
266 (_i "Insert contents of quote @var{what} corresponding to @var{main-music},
267 in a CueVoice oriented by @var{dir}.")
268 (make-music 'QuoteMusic
270 'quoted-context-type 'Voice
271 'quoted-context-id "cue"
272 'quoted-music-name what
273 'quoted-music-clef clef
274 'quoted-voice-direction dir))
279 #(define-music-function (parser location music) (ly:music?)
280 (_i "Display the LilyPond input representation of @var{music}
283 (display-lily-music music parser)
287 #(define-music-function (parser location music) (ly:music?)
288 (_i "Display the internal representation of @var{music} to the console.")
290 (display-scheme-music music)
296 #(define-music-function (parser location music) (ly:music?)
297 (_i "Terminate the next spanner prematurely after exactly one note
298 without the need of a specific end spanner.")
299 (if (eq? (ly:music-property music 'name) 'EventChord)
300 (let* ((elts (ly:music-property music 'elements))
301 (start-span-evs (filter (lambda (ev)
302 (and (music-has-type ev 'span-event)
303 (equal? (ly:music-property ev 'span-direction)
308 (let ((c (music-clone m)))
309 (set! (ly:music-property c 'span-direction) STOP)
312 (end-ev-chord (make-music 'EventChord
313 'elements stop-span-evs))
314 (total (make-music 'SequentialMusic
315 'elements (list music
319 (ly:input-message location (_ "argument endSpanners is not an EventChord: ~a" music))))
324 #(define-music-function (parser location factor argument) (ly:moment? ly:music?)
325 (_i "Adjust durations of music in @var{argument} by rational @var{factor}.")
326 (let ((orig-duration (ly:music-length argument))
327 (multiplier (ly:make-moment 1 1)))
331 (if (and (eq? (ly:music-property mus 'name) 'EventChord)
332 (< 0 (ly:moment-main-denominator (ly:music-length mus))))
334 (ly:music-compress mus multiplier)
335 (set! multiplier (ly:moment-mul factor multiplier))))
341 (ly:moment-div orig-duration (ly:music-length argument)))
348 #(def-grace-function startGraceMusic stopGraceMusic
349 (_i "Insert @var{music} as grace notes."))
351 harmonicByFret = #(define-music-function (parser location fret music) (number? ly:music?)
352 (let* ((fret (number->string fret))
353 (pitch (fret->pitch fret)))
354 (make-sequential-music
357 \override TabNoteHead #'stencil = #(tab-note-head::print-custom-fret-label $fret)
360 (calc-harmonic-pitch pitch music))
362 \revert TabNoteHead #'stencil
365 harmonicByRatio = #(define-music-function (parser location ratio music) (number? ly:music?)
366 (let ((pitch (ratio->pitch ratio))
367 (fret (ratio->fret ratio)))
368 (make-sequential-music
371 \override TabNoteHead #'stencil = #(tab-note-head::print-custom-fret-label $fret)
374 (calc-harmonic-pitch pitch music))
376 \revert TabNoteHead #'stencil
380 #(define-music-function
381 (parser location name) (string?)
382 (_i "Switch instrument to @var{name}, which must be predefined with
383 @code{\\addInstrumentDefinition}.")
384 (let* ((handle (assoc name instrument-definitions))
385 (instrument-def (if handle (cdr handle) '())))
388 (ly:input-message location "No such instrument: ~a" name))
390 (make-music 'SimultaneousMusic
402 #(define-music-function (parser location tag music) (symbol? ly:music?)
403 (_i "Include only elements of @var{music} that are tagged with @var{tag}.")
406 (let* ((tags (ly:music-property m 'tags))
407 (res (memq tag tags)))
414 #(define-music-function (parser location music) (ly:music?)
415 (_i "Remove cue notes from @var{music}.")
418 (if (and (string? (ly:music-property mus 'quoted-music-name))
419 (string=? (ly:music-property mus 'quoted-context-id "") "cue"))
420 (ly:music-property mus 'element)
427 #(define-music-function (parser location label) (symbol?)
428 (_i "Create @var{label} as a bookmarking label.")
429 (make-music 'EventChord
432 'elements (list (make-music 'LabelEvent
433 'page-label label))))
437 #(define-music-function (parser location language) (string?)
438 (_i "Set note names for language @var{language}.")
439 (note-names-language parser language)
440 (make-music 'Music 'void #t))
442 languageSaveAndChange =
443 #(define-music-function (parser location language) (string?)
444 (_i "Store the previous pitchnames alist, and set a new one.")
445 (set! previous-pitchnames pitchnames)
446 (note-names-language parser language)
447 (make-music 'Music 'void #t))
450 #(define-music-function (parser location) ()
451 (_i "Restore a previously-saved pitchnames alist.")
452 (if previous-pitchnames
454 (set! pitchnames previous-pitchnames)
455 (ly:parser-set-note-names parser pitchnames))
456 (ly:warning (_ "No other language was defined previously. Ignoring.")))
457 (make-music 'Music 'void #t))
461 #(define-music-function (parser location arg) (ly:music?)
462 (_i "Display chords in @var{arg} as clusters.")
463 (music-map note-to-cluster arg))
466 #(define-music-function (parser location around to scale music)
467 (ly:music? ly:music? ly:music? ly:music?)
468 (_i "Invert @var{music} about @var{around} using @var{scale} and
469 transpose from @var{around} to @var{to}.")
470 (let ((inverter (make-modal-inverter around to scale)))
471 (change-pitches music inverter)
475 #(define-music-function (parser location from to scale music)
476 (ly:music? ly:music? ly:music? ly:music?)
477 (_i "Transpose @var{music} from pitch @var{from} to pitch @var{to}
479 (let ((transposer (make-modal-transposer from to scale)))
480 (change-pitches music transposer)
484 #(define-music-function (parser location proc mus) (procedure? ly:music?)
485 (_i "Apply @var{proc} to @var{mus} and all of the music it contains.")
486 (music-map proc mus))
488 %% noPageBreak and noPageTurn are music functions (not music indentifiers),
489 %% because music identifiers are not allowed at top-level.
491 #(define-music-function (location parser) ()
492 (_i "Forbid a page break. May be used at toplevel (i.e., between scores or
493 markups), or inside a score.")
494 (make-music 'EventChord
496 'page-break-permission 'forbid
497 'elements (list (make-music 'PageBreakEvent
498 'break-permission '()))))
501 #(define-music-function (location parser) ()
502 (_i "Forbid a page turn. May be used at toplevel (i.e., between scores or
503 markups), or inside a score.")
504 (make-music 'EventChord
506 'page-turn-permission 'forbid
507 'elements (list (make-music 'PageTurnEvent
508 'break-permission '()))))
513 #(define-music-function (parser location pitch-note) (ly:music?)
515 (make-music 'RelativeOctaveCheck
516 'pitch (pitch-of-note pitch-note)))
519 #(define-music-function (parser location octave) (integer?)
520 (_i "Set the octavation.")
521 (make-music 'OttavaMusic
522 'ottava-number octave))
524 overrideTimeSignatureSettings =
525 #(define-music-function
526 (parser location time-signature base-moment beat-structure beam-exceptions)
527 (pair? pair? cheap-list? cheap-list?)
529 (_i "Override @code{timeSignatureSettings}
530 for time signatures of @var{time-signature} to have settings
531 of @var{base-moment}, @var{beat-structure}, and @var{beam-exceptions}.")
533 ;; TODO -- add warning if largest value of grouping is
534 ;; greater than time-signature.
535 (let ((setting (make-setting base-moment beat-structure beam-exceptions)))
536 (override-time-signature-setting time-signature setting)))
539 #(define-music-function (parser location name property value)
540 (string? symbol? scheme?)
542 (_i "Set @var{property} to @var{value} in all grobs named @var{name}.
543 The @var{name} argument is a string of the form @code{\"Context.GrobName\"}
544 or @code{\"GrobName\"}.")
546 (let ((name-components (string-split name #\.))
547 (context-name 'Bottom)
550 (if (> 2 (length name-components))
551 (set! grob-name (string->symbol (car name-components)))
553 (set! grob-name (string->symbol (list-ref name-components 1)))
554 (set! context-name (string->symbol (list-ref name-components 0)))))
556 (make-music 'ApplyOutputEvent
557 'context-type context-name
559 (lambda (grob orig-context context)
561 (cdr (assoc 'name (ly:grob-property grob 'meta)))
563 (set! (ly:grob-property grob property) value))))))
567 %% pageBreak and pageTurn are music functions (iso music indentifiers),
568 %% because music identifiers are not allowed at top-level.
570 #(define-music-function (location parser) ()
571 (_i "Force a page break. May be used at toplevel (i.e., between scores or
572 markups), or inside a score.")
573 (make-music 'EventChord
575 'line-break-permission 'force
576 'page-break-permission 'force
577 'elements (list (make-music 'LineBreakEvent
578 'break-permission 'force)
579 (make-music 'PageBreakEvent
580 'break-permission 'force))))
583 #(define-music-function (location parser) ()
584 (_i "Force a page turn between two scores or top-level markups.")
585 (make-music 'EventChord
587 'line-break-permission 'force
588 'page-break-permission 'force
589 'page-turn-permission 'force
590 'elements (list (make-music 'LineBreakEvent
591 'break-permission 'force)
592 (make-music 'PageBreakEvent
593 'break-permission 'force)
594 (make-music 'PageTurnEvent
595 'break-permission 'force))))
598 #(define-music-function (parser location voice-ids music) (list? ly:music?)
599 (_i "Define parallel music sequences, separated by '|' (bar check signs),
600 and assign them to the identifiers provided in @var{voice-ids}.
602 @var{voice-ids}: a list of music identifiers (symbols containing only letters)
604 @var{music}: a music sequence, containing BarChecks as limiting expressions.
609 \\parallelMusic #'(A B C) {
619 (let* ((voices (apply circular-list (make-list (length voice-ids) (list))))
620 (current-voices voices)
621 (current-sequence (list)))
624 (define (push-music m)
625 "Push the music expression into the current sequence"
626 (set! current-sequence (cons m current-sequence)))
627 (define (change-voice)
628 "Stores the previously built sequence into the current voice and
629 change to the following voice."
630 (list-set! current-voices 0 (cons (make-music 'SequentialMusic
631 'elements (reverse! current-sequence))
632 (car current-voices)))
633 (set! current-sequence (list))
634 (set! current-voices (cdr current-voices)))
635 (define (bar-check? m)
636 "Checks whether m is a bar check."
637 (eq? (ly:music-property m 'name) 'BarCheck))
638 (define (music-origin music)
639 "Recursively search an origin location stored in music."
640 (cond ((null? music) #f)
641 ((not (null? (ly:music-property music 'origin)))
642 (ly:music-property music 'origin))
643 (else (or (music-origin (ly:music-property music 'element))
644 (let ((origins (remove not (map music-origin
645 (ly:music-property music 'elements)))))
646 (and (not (null? origins)) (car origins)))))))
648 ;; first, split the music and fill in voices
649 (map-in-order (lambda (m)
651 (if (bar-check? m) (change-voice)))
652 (ly:music-property music 'elements))
653 (if (not (null? current-sequence)) (change-voice))
654 ;; un-circularize `voices' and reorder the voices
655 (set! voices (map-in-order (lambda (dummy seqs)
659 ;; set origin location of each sequence in each voice
660 ;; for better type error tracking
661 (for-each (lambda (voice)
662 (for-each (lambda (seq)
663 (set! (ly:music-property seq 'origin)
664 (or (music-origin seq) location)))
668 ;; check sequence length
669 (apply for-each (lambda* (#:rest seqs)
670 (let ((moment-reference (ly:music-length (car seqs))))
671 (for-each (lambda (seq moment)
672 (if (not (equal? moment moment-reference))
673 (ly:music-message seq
674 "Bars in parallel music don't have the same length")))
675 seqs (map-in-order ly:music-length seqs))))
678 ;; bind voice identifiers to the voices
679 (map (lambda (voice-id voice)
680 (ly:parser-define! parser voice-id
681 (make-music 'SequentialMusic
685 ;; Return an empty sequence. This function is actually a "void" function.
686 (make-music 'SequentialMusic 'void #t))
689 #(define-music-function (parser loc arg) (ly:music?)
690 (_i "Tag @var{arg} to be parenthesized.")
692 (if (memq 'event-chord (ly:music-property arg 'types))
693 ;; arg is an EventChord -> set the parenthesize property
694 ;; on all child notes and rests
697 (if (or (memq 'note-event (ly:music-property ev 'types))
698 (memq 'rest-event (ly:music-property ev 'types)))
699 (set! (ly:music-property ev 'parenthesize) #t)))
700 (ly:music-property arg 'elements))
701 ;; No chord, simply set property for this expression:
702 (set! (ly:music-property arg 'parenthesize) #t))
706 #(define-music-function (parser location part1 part2) (ly:music? ly:music?)
707 (_i "Take the music in @var{part1} and @var{part2} and typeset so
708 that they share a staff.")
709 (make-part-combine-music parser
713 #(define-music-function (location parser type once) (symbol-or-boolean? boolean?)
714 (_i "Override the part-combiner.")
715 (make-music 'EventChord
716 'elements (list (make-music 'PartCombineForceEvent
719 partcombineApart = \partcombineForce #'apart ##f
720 partcombineApartOnce = \partcombineForce #'apart ##t
721 partcombineChords = \partcombineForce #'chords ##f
722 partcombineChordsOnce = \partcombineForce #'chords ##t
723 partcombineUnisono = \partcombineForce #'unisono ##f
724 partcombineUnisonoOnce = \partcombineForce #'unisono ##t
725 partcombineSoloI = \partcombineForce #'solo1 ##f
726 partcombineSoloIOnce = \partcombineForce #'solo1 ##t
727 partcombineSoloII = \partcombineForce #'solo2 ##f
728 partcombineSoloIIOnce = \partcombineForce #'solo2 ##t
729 partcombineAutomatic = \partcombineForce ##f ##f
730 partcombineAutomaticOnce = \partcombineForce ##f ##t
734 #(define-music-function
735 (parser location main-note secondary-note)
736 (ly:music? ly:music?)
737 (_i "Print a trill with @var{main-note} as the main note of the trill and
738 print @var{secondary-note} as a stemless note head in parentheses.")
739 (let* ((get-notes (lambda (ev-chord)
741 (lambda (m) (eq? 'NoteEvent (ly:music-property m 'name)))
742 (ly:music-property ev-chord 'elements))))
743 (sec-note-events (get-notes secondary-note))
744 (trill-events (filter (lambda (m) (music-has-type m 'trill-span-event))
745 (ly:music-property main-note 'elements))))
747 (if (pair? sec-note-events)
749 (let* ((trill-pitch (ly:music-property (car sec-note-events) 'pitch))
750 (forced (ly:music-property (car sec-note-events) 'force-accidental)))
752 (if (ly:pitch? trill-pitch)
753 (for-each (lambda (m)
754 (ly:music-set-property! m 'pitch trill-pitch)) trill-events)
756 (ly:warning (_ "Second argument of \\pitchedTrill should be single note: "))
757 (display sec-note-events)))
760 (for-each (lambda (m)
761 (ly:music-set-property! m 'force-accidental forced))
766 #(define-music-function (parser location what main-music) (string? ly:music?)
767 (_i "Indicate a section of music to be quoted. @var{what} indicates the name
768 of the quoted voice, as specified in an @code{\\addQuote} command.
769 @var{main-music} is used to indicate the length of music to be quoted;
770 usually contains spacers or multi-measure rests.")
771 (make-music 'QuoteMusic
773 'quoted-music-name what))
776 #(define-music-function (parser location tag music) (symbol? ly:music?)
777 (_i "Remove elements of @var{music} that are tagged with @var{tag}.")
780 (let* ((tags (ly:music-property m 'tags))
781 (res (memq tag tags)))
785 resetRelativeOctave =
786 #(define-music-function (parser location reference-note) (ly:music?)
787 (_i "Set the octave inside a \\relative section.")
789 (let* ((notes (ly:music-property reference-note 'elements))
790 (pitch (ly:music-property (car notes) 'pitch)))
792 (set! (ly:music-property reference-note 'elements) '())
793 (set! (ly:music-property reference-note 'to-relative-callback)
794 (lambda (music last-pitch)
800 #(define-music-function (parser location music)
802 (_i "Return @var{music} in reverse order.")
803 (retrograde-music music))
805 revertTimeSignatureSettings =
806 #(define-music-function
807 (parser location time-signature)
810 (_i "Revert @code{timeSignatureSettings}
811 for time signatures of @var{time-signature}.")
812 (revert-time-signature-setting time-signature))
815 #(define-music-function (parser location finger) (number-or-string?)
816 (_i "Apply @var{finger} as a fingering indication.")
825 (list 'digit finger)))))
830 #(define-music-function (parser location fraction music)
831 (number-pair? ly:music?)
832 (_i "Multiply the duration of events in @var{music} by @var{fraction}.")
833 (ly:music-compress music
834 (ly:make-moment (car fraction) (cdr fraction))))
837 #(define-music-function (parser location dur dots arg)
838 (integer? integer? ly:music?)
839 (_i "Scale @var{arg} up by a factor of @var{2^dur*(2-(1/2)^dots)}.")
843 (shift-one-duration-log x dur dots)) arg))
846 #(define-music-function (parser location parameters) (list?)
847 (_i "Set the system stretch, by reading the 'system-stretch property of
848 the `parameters' assoc list.")
850 \overrideProperty #"Score.NonMusicalPaperColumn"
851 #'line-break-system-details
852 #$(list (cons 'alignment-extra-space (cdr (assoc 'system-stretch parameters)))
853 (cons 'system-Y-extent (cdr (assoc 'system-Y-extent parameters))))
857 #(define-music-function (parser location style heads music)
858 (symbol? list-or-symbol? ly:music?)
859 (_i "Set @var{heads} in @var{music} to @var{style}.")
860 (style-note-heads heads style music))
865 #(define-music-function (parser location) ()
866 (_i "Include the string information in a chord repetition.")
867 (ly:parser-set-repetition-function parser tab-repeat-chord)
868 (make-music 'SequentialMusic 'void #t))
871 #(define-music-function (parser location tag arg) (symbol? ly:music?)
873 (_i "Add @var{tag} to the @code{tags} property of @var{arg}.")
876 (ly:music-property arg 'tags)
878 (ly:music-property arg 'tags)))
881 transposedCueDuring =
882 #(define-music-function
883 (parser location what dir pitch-note main-music)
884 (string? ly:dir? ly:music? ly:music?)
886 (_i "Insert notes from the part @var{what} into a voice called @code{cue},
887 using the transposition defined by @var{pitch-note}. This happens
888 simultaneously with @var{main-music}, which is usually a rest. The
889 argument @var{dir} determines whether the cue notes should be notated
890 as a first or second voice.")
892 (make-music 'QuoteMusic
894 'quoted-context-type 'Voice
895 'quoted-context-id "cue"
896 'quoted-music-name what
897 'quoted-voice-direction dir
898 'quoted-transposition (pitch-of-note pitch-note)))
901 #(define-music-function (parser location pitch-note) (ly:music?)
902 (_i "Set instrument transposition")
905 (make-property-set 'instrumentTransposition
906 (ly:pitch-negate (pitch-of-note pitch-note)))
910 #(define-music-function (parser location sym val arg)
911 (symbol? scheme? ly:music?)
912 (_i "Add @code{sym . val} to the @code{tweaks} property of @var{arg}.")
914 (if (equal? (object-property sym 'backend-type?) #f)
916 (ly:warning (_ "cannot find property type-check for ~a") sym)
917 (ly:warning (_ "doing assignment anyway"))))
919 (ly:music-property arg 'tweaks)
921 (ly:music-property arg 'tweaks)))
927 #(define-music-function (parser location music) (ly:music?)
928 (_i "Force any @code{\\repeat volta}, @code{\\repeat tremolo} or
929 @code{\\repeat percent} commands in @var{music} to be interpreted
930 as @code{\\repeat unfold}.")
931 (unfold-repeats music))
936 #(define-music-function (parser location sym val music)
937 (symbol? scheme? ly:music?)
938 (_i "Set @var{sym} to @var{val} in @var{music}.")
940 (set! (ly:music-property music sym) val)