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
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))
219 #(define-music-function (parser location args) (pair?)
220 (_i "Create compound time signatures. The argument is a Scheme list of
221 lists. Each list describes one fraction, with the last entry being the
222 denominator, while the first entries describe the summands in the
223 enumerator. If the time signature consists of just one fraction,
224 the list can be given directly, i.e. not as a list containing a single list.
225 For example, a time signature of (3+1)/8 + 2/4 would be created as
226 @code{\\compoundMeter #'((3 1 8) (2 4))}, and a time signature of (3+2)/8
227 as @code{\\compoundMeter #'((3 2 8))} or shorter
228 @code{\\compoundMeter #'(3 2 8)}.")
229 (let* ((mlen (calculate-compound-measure-length args))
230 (beat (calculate-compound-base-beat args))
231 (beatGrouping (calculate-compound-beat-grouping args))
232 (timesig (cons (ly:moment-main-numerator mlen)
233 (ly:moment-main-denominator mlen))))
235 \once \override Staff.TimeSignature #'stencil = #(lambda (grob)
236 (grob-interpret-markup grob (format-compound-time $args)))
237 \set Timing.timeSignatureFraction = $timesig
238 \set Timing.baseMoment = $beat
239 \set Timing.beatStructure = $beatGrouping
240 \set Timing.beamExceptions = #'()
241 \set Timing.measureLength = $mlen
246 #(define-music-function (parser location type) (string?)
247 (_i "Set the current cue clef to @var{type}.")
248 (make-cue-clef-set type))
250 #(define-music-function (parser location) ()
251 (_i "Unset the current cue clef.")
252 (make-cue-clef-unset))
255 #(define-music-function
256 (parser location what dir main-music) (string? ly:dir? ly:music?)
257 (_i "Insert contents of quote @var{what} corresponding to @var{main-music},
258 in a CueVoice oriented by @var{dir}.")
259 (make-music 'QuoteMusic
261 'quoted-context-type 'Voice
262 'quoted-context-id "cue"
263 'quoted-music-name what
264 'quoted-voice-direction dir))
267 #(define-music-function
268 (parser location what dir clef main-music) (string? ly:dir? string? ly:music?)
269 (_i "Insert contents of quote @var{what} corresponding to @var{main-music},
270 in a CueVoice oriented by @var{dir}.")
271 (make-music 'QuoteMusic
273 'quoted-context-type 'Voice
274 'quoted-context-id "cue"
275 'quoted-music-name what
276 'quoted-music-clef clef
277 'quoted-voice-direction dir))
282 #(define-music-function (parser location music) (ly:music?)
283 (_i "Display the LilyPond input representation of @var{music}
286 (display-lily-music music parser)
290 #(define-music-function (parser location music) (ly:music?)
291 (_i "Display the internal representation of @var{music} to the console.")
293 (display-scheme-music music)
299 #(define-music-function (parser location music) (ly:music?)
300 (_i "Terminate the next spanner prematurely after exactly one note
301 without the need of a specific end spanner.")
302 (if (eq? (ly:music-property music 'name) 'EventChord)
303 (let* ((elts (ly:music-property music 'elements))
304 (start-span-evs (filter (lambda (ev)
305 (and (music-has-type ev 'span-event)
306 (equal? (ly:music-property ev 'span-direction)
311 (let ((c (music-clone m)))
312 (set! (ly:music-property c 'span-direction) STOP)
315 (end-ev-chord (make-music 'EventChord
316 'elements stop-span-evs))
317 (total (make-music 'SequentialMusic
318 'elements (list music
322 (ly:input-message location (_ "argument endSpanners is not an EventChord: ~a" music))))
327 #(define-music-function (parser location factor argument) (ly:moment? ly:music?)
328 (_i "Adjust durations of music in @var{argument} by rational @var{factor}.")
329 (let ((orig-duration (ly:music-length argument))
330 (multiplier (ly:make-moment 1 1)))
334 (if (and (eq? (ly:music-property mus 'name) 'EventChord)
335 (< 0 (ly:moment-main-denominator (ly:music-length mus))))
337 (ly:music-compress mus multiplier)
338 (set! multiplier (ly:moment-mul factor multiplier))))
344 (ly:moment-div orig-duration (ly:music-length argument)))
351 #(def-grace-function startGraceMusic stopGraceMusic
352 (_i "Insert @var{music} as grace notes."))
354 harmonicByFret = #(define-music-function (parser location fret music) (number? ly:music?)
355 (let* ((fret (number->string fret))
356 (pitch (fret->pitch fret)))
357 (make-sequential-music
360 \override TabNoteHead #'stencil = #(tab-note-head::print-custom-fret-label $fret)
363 (calc-harmonic-pitch pitch music))
365 \revert TabNoteHead #'stencil
368 harmonicByRatio = #(define-music-function (parser location ratio music) (number? ly:music?)
369 (let ((pitch (ratio->pitch ratio))
370 (fret (ratio->fret ratio)))
371 (make-sequential-music
374 \override TabNoteHead #'stencil = #(tab-note-head::print-custom-fret-label $fret)
377 (calc-harmonic-pitch pitch music))
379 \revert TabNoteHead #'stencil
383 #(define-music-function
384 (parser location name) (string?)
385 (_i "Switch instrument to @var{name}, which must be predefined with
386 @code{\\addInstrumentDefinition}.")
387 (let* ((handle (assoc name instrument-definitions))
388 (instrument-def (if handle (cdr handle) '())))
391 (ly:input-message location "No such instrument: ~a" name))
393 (make-music 'SimultaneousMusic
405 #(define-music-function (parser location tag music) (symbol? ly:music?)
406 (_i "Include only elements of @var{music} that are tagged with @var{tag}.")
409 (let* ((tags (ly:music-property m 'tags))
410 (res (memq tag tags)))
417 #(define-music-function (parser location music) (ly:music?)
418 (_i "Remove cue notes from @var{music}.")
421 (if (and (string? (ly:music-property mus 'quoted-music-name))
422 (string=? (ly:music-property mus 'quoted-context-id "") "cue"))
423 (ly:music-property mus 'element)
430 #(define-music-function (parser location label) (symbol?)
431 (_i "Create @var{label} as a bookmarking label.")
432 (make-music 'EventChord
435 'elements (list (make-music 'LabelEvent
436 'page-label label))))
440 #(define-music-function (parser location language) (string?)
441 (_i "Set note names for language @var{language}.")
442 (note-names-language parser language)
443 (make-music 'Music 'void #t))
445 languageSaveAndChange =
446 #(define-music-function (parser location language) (string?)
447 (_i "Store the previous pitchnames alist, and set a new one.")
448 (set! previous-pitchnames pitchnames)
449 (note-names-language parser language)
450 (make-music 'Music 'void #t))
453 #(define-music-function (parser location) ()
454 (_i "Restore a previously-saved pitchnames alist.")
455 (if previous-pitchnames
457 (set! pitchnames previous-pitchnames)
458 (ly:parser-set-note-names parser pitchnames))
459 (ly:warning (_ "No other language was defined previously. Ignoring.")))
460 (make-music 'Music 'void #t))
464 #(define-music-function (parser location arg) (ly:music?)
465 (_i "Display chords in @var{arg} as clusters.")
466 (music-map note-to-cluster arg))
469 #(define-music-function (parser location proc mus) (procedure? ly:music?)
470 (_i "Apply @var{proc} to @var{mus} and all of the music it contains.")
471 (music-map proc mus))
475 %% noPageBreak and noPageTurn are music functions (not music indentifiers),
476 %% because music identifiers are not allowed at top-level.
478 #(define-music-function (location parser) ()
479 (_i "Forbid a page break. May be used at toplevel (i.e., between scores or
480 markups), or inside a score.")
481 (make-music 'EventChord
483 'page-break-permission 'forbid
484 'elements (list (make-music 'PageBreakEvent
485 'break-permission '()))))
488 #(define-music-function (location parser) ()
489 (_i "Forbid a page turn. May be used at toplevel (i.e., between scores or
490 markups), or inside a score.")
491 (make-music 'EventChord
493 'page-turn-permission 'forbid
494 'elements (list (make-music 'PageTurnEvent
495 'break-permission '()))))
500 #(define-music-function (parser location pitch-note) (ly:music?)
502 (make-music 'RelativeOctaveCheck
504 'pitch (pitch-of-note pitch-note)))
507 #(define-music-function (parser location octave) (integer?)
508 (_i "Set the octavation.")
509 (make-music 'OttavaMusic
510 'ottava-number octave))
512 overrideTimeSignatureSettings =
513 #(define-music-function
514 (parser location time-signature base-moment beat-structure beam-exceptions)
515 (pair? pair? cheap-list? cheap-list?)
517 (_i "Override @code{timeSignatureSettings}
518 for time signatures of @var{time-signature} to have settings
519 of @var{base-moment}, @var{beat-structure}, and @var{beam-exceptions}.")
521 ;; TODO -- add warning if largest value of grouping is
522 ;; greater than time-signature.
523 (let ((setting (make-setting base-moment beat-structure beam-exceptions)))
524 (override-time-signature-setting time-signature setting)))
527 #(define-music-function (parser location name property value)
528 (string? symbol? scheme?)
530 (_i "Set @var{property} to @var{value} in all grobs named @var{name}.
531 The @var{name} argument is a string of the form @code{\"Context.GrobName\"}
532 or @code{\"GrobName\"}.")
534 (let ((name-components (string-split name #\.))
535 (context-name 'Bottom)
538 (if (> 2 (length name-components))
539 (set! grob-name (string->symbol (car name-components)))
541 (set! grob-name (string->symbol (list-ref name-components 1)))
542 (set! context-name (string->symbol (list-ref name-components 0)))))
544 (make-music 'ApplyOutputEvent
546 'context-type context-name
548 (lambda (grob orig-context context)
550 (cdr (assoc 'name (ly:grob-property grob 'meta)))
552 (set! (ly:grob-property grob property) value))))))
556 %% pageBreak and pageTurn are music functions (iso music indentifiers),
557 %% because music identifiers are not allowed at top-level.
559 #(define-music-function (location parser) ()
560 (_i "Force a page break. May be used at toplevel (i.e., between scores or
561 markups), or inside a score.")
562 (make-music 'EventChord
564 'line-break-permission 'force
565 'page-break-permission 'force
566 'elements (list (make-music 'LineBreakEvent
567 'break-permission 'force)
568 (make-music 'PageBreakEvent
569 'break-permission 'force))))
572 #(define-music-function (location parser) ()
573 (_i "Force a page turn between two scores or top-level markups.")
574 (make-music 'EventChord
576 'line-break-permission 'force
577 'page-break-permission 'force
578 'page-turn-permission 'force
579 'elements (list (make-music 'LineBreakEvent
580 'break-permission 'force)
581 (make-music 'PageBreakEvent
582 'break-permission 'force)
583 (make-music 'PageTurnEvent
584 'break-permission 'force))))
587 #(define-music-function (parser location voice-ids music) (list? ly:music?)
588 (_i "Define parallel music sequences, separated by '|' (bar check signs),
589 and assign them to the identifiers provided in @var{voice-ids}.
591 @var{voice-ids}: a list of music identifiers (symbols containing only letters)
593 @var{music}: a music sequence, containing BarChecks as limiting expressions.
598 \\parallelMusic #'(A B C) {
608 (let* ((voices (apply circular-list (make-list (length voice-ids) (list))))
609 (current-voices voices)
610 (current-sequence (list)))
613 (define (push-music m)
614 "Push the music expression into the current sequence"
615 (set! current-sequence (cons m current-sequence)))
616 (define (change-voice)
617 "Stores the previously built sequence into the current voice and
618 change to the following voice."
619 (list-set! current-voices 0 (cons (make-music 'SequentialMusic
620 'elements (reverse! current-sequence))
621 (car current-voices)))
622 (set! current-sequence (list))
623 (set! current-voices (cdr current-voices)))
624 (define (bar-check? m)
625 "Checks whether m is a bar check."
626 (eq? (ly:music-property m 'name) 'BarCheck))
627 (define (music-origin music)
628 "Recursively search an origin location stored in music."
629 (cond ((null? music) #f)
630 ((not (null? (ly:music-property music 'origin)))
631 (ly:music-property music 'origin))
632 (else (or (music-origin (ly:music-property music 'element))
633 (let ((origins (remove not (map music-origin
634 (ly:music-property music 'elements)))))
635 (and (not (null? origins)) (car origins)))))))
637 ;; first, split the music and fill in voices
638 (map-in-order (lambda (m)
640 (if (bar-check? m) (change-voice)))
641 (ly:music-property music 'elements))
642 (if (not (null? current-sequence)) (change-voice))
643 ;; un-circularize `voices' and reorder the voices
644 (set! voices (map-in-order (lambda (dummy seqs)
648 ;; set origin location of each sequence in each voice
649 ;; for better type error tracking
650 (for-each (lambda (voice)
651 (for-each (lambda (seq)
652 (set! (ly:music-property seq 'origin)
653 (or (music-origin seq) location)))
657 ;; check sequence length
658 (apply for-each (lambda* (#:rest seqs)
659 (let ((moment-reference (ly:music-length (car seqs))))
660 (for-each (lambda (seq moment)
661 (if (not (equal? moment moment-reference))
662 (ly:music-message seq
663 "Bars in parallel music don't have the same length")))
664 seqs (map-in-order ly:music-length seqs))))
667 ;; bind voice identifiers to the voices
668 (map (lambda (voice-id voice)
669 (ly:parser-define! parser voice-id
670 (make-music 'SequentialMusic
674 ;; Return an empty sequence. This function is actually a "void" function.
675 (make-music 'SequentialMusic 'void #t))
678 #(define-music-function (parser loc arg) (ly:music?)
679 (_i "Tag @var{arg} to be parenthesized.")
681 (if (memq 'event-chord (ly:music-property arg 'types))
682 ;; arg is an EventChord -> set the parenthesize property
683 ;; on all child notes and rests
686 (if (or (memq 'note-event (ly:music-property ev 'types))
687 (memq 'rest-event (ly:music-property ev 'types)))
688 (set! (ly:music-property ev 'parenthesize) #t)))
689 (ly:music-property arg 'elements))
690 ;; No chord, simply set property for this expression:
691 (set! (ly:music-property arg 'parenthesize) #t))
695 #(define-music-function (parser location part1 part2) (ly:music? ly:music?)
696 (_i "Take the music in @var{part1} and @var{part2} and typeset so
697 that they share a staff.")
698 (make-part-combine-music parser
702 #(define-music-function (location parser type once) (symbol-or-boolean? boolean?)
703 (_i "Override the part-combiner.")
704 (make-music 'EventChord
705 'elements (list (make-music 'PartCombineForceEvent
708 partcombineApart = \partcombineForce #'apart ##f
709 partcombineApartOnce = \partcombineForce #'apart ##t
710 partcombineChords = \partcombineForce #'chords ##f
711 partcombineChordsOnce = \partcombineForce #'chords ##t
712 partcombineUnisono = \partcombineForce #'unisono ##f
713 partcombineUnisonoOnce = \partcombineForce #'unisono ##t
714 partcombineSoloI = \partcombineForce #'solo1 ##f
715 partcombineSoloIOnce = \partcombineForce #'solo1 ##t
716 partcombineSoloII = \partcombineForce #'solo2 ##f
717 partcombineSoloIIOnce = \partcombineForce #'solo2 ##t
718 partcombineAutomatic = \partcombineForce ##f ##f
719 partcombineAutomaticOnce = \partcombineForce ##f ##t
723 #(define-music-function
724 (parser location main-note secondary-note)
725 (ly:music? ly:music?)
726 (_i "Print a trill with @var{main-note} as the main note of the trill and
727 print @var{secondary-note} as a stemless note head in parentheses.")
728 (let* ((get-notes (lambda (ev-chord)
730 (lambda (m) (eq? 'NoteEvent (ly:music-property m 'name)))
731 (ly:music-property ev-chord 'elements))))
732 (sec-note-events (get-notes secondary-note))
733 (trill-events (filter (lambda (m) (music-has-type m 'trill-span-event))
734 (ly:music-property main-note 'elements))))
736 (if (pair? sec-note-events)
738 (let* ((trill-pitch (ly:music-property (car sec-note-events) 'pitch))
739 (forced (ly:music-property (car sec-note-events) 'force-accidental)))
741 (if (ly:pitch? trill-pitch)
742 (for-each (lambda (m)
743 (ly:music-set-property! m 'pitch trill-pitch)) trill-events)
745 (ly:warning (_ "Second argument of \\pitchedTrill should be single note: "))
746 (display sec-note-events)))
749 (for-each (lambda (m)
750 (ly:music-set-property! m 'force-accidental forced))
755 #(define-music-function (parser location what main-music) (string? ly:music?)
756 (_i "Indicate a section of music to be quoted. @var{what} indicates the name
757 of the quoted voice, as specified in an @code{\\addQuote} command.
758 @var{main-music} is used to indicate the length of music to be quoted;
759 usually contains spacers or multi-measure rests.")
760 (make-music 'QuoteMusic
762 'quoted-music-name what
766 #(define-music-function (parser location tag music) (symbol? ly:music?)
767 (_i "Remove elements of @var{music} that are tagged with @var{tag}.")
770 (let* ((tags (ly:music-property m 'tags))
771 (res (memq tag tags)))
775 resetRelativeOctave =
776 #(define-music-function (parser location reference-note) (ly:music?)
777 (_i "Set the octave inside a \\relative section.")
779 (let* ((notes (ly:music-property reference-note 'elements))
780 (pitch (ly:music-property (car notes) 'pitch)))
782 (set! (ly:music-property reference-note 'elements) '())
783 (set! (ly:music-property reference-note 'to-relative-callback)
784 (lambda (music last-pitch)
789 revertTimeSignatureSettings =
790 #(define-music-function
791 (parser location time-signature)
794 (_i "Revert @code{timeSignatureSettings}
795 for time signatures of @var{time-signature}.")
796 (revert-time-signature-setting time-signature))
799 #(define-music-function (parser location finger) (number-or-string?)
800 (_i "Apply @var{finger} as a fingering indication.")
809 (list 'digit finger)))))
814 #(define-music-function (parser location fraction music)
815 (number-pair? ly:music?)
816 (_i "Multiply the duration of events in @var{music} by @var{fraction}.")
817 (ly:music-compress music
818 (ly:make-moment (car fraction) (cdr fraction))))
821 #(define-music-function (parser location dur dots arg)
822 (integer? integer? ly:music?)
823 (_i "Scale @var{arg} up by a factor of @var{2^dur*(2-(1/2)^dots)}.")
827 (shift-one-duration-log x dur dots)) arg))
830 #(define-music-function (parser location parameters) (list?)
831 (_i "Set the system stretch, by reading the 'system-stretch property of
832 the `parameters' assoc list.")
834 \overrideProperty #"Score.NonMusicalPaperColumn"
835 #'line-break-system-details
836 #$(list (cons 'alignment-extra-space (cdr (assoc 'system-stretch parameters)))
837 (cons 'system-Y-extent (cdr (assoc 'system-Y-extent parameters))))
841 #(define-music-function (parser location style heads music)
842 (symbol? list-or-symbol? ly:music?)
843 (_i "Set @var{heads} in @var{music} to @var{style}.")
844 (style-note-heads heads style music))
849 #(define-music-function (parser location) ()
850 (_i "Include the string information in a chord repetition.")
851 (ly:parser-set-repetition-function parser tab-repeat-chord)
852 (make-music 'SequentialMusic 'void #t))
855 #(define-music-function (parser location tag arg) (symbol? ly:music?)
857 (_i "Add @var{tag} to the @code{tags} property of @var{arg}.")
860 (ly:music-property arg 'tags)
862 (ly:music-property arg 'tags)))
865 transposedCueDuring =
866 #(define-music-function
867 (parser location what dir pitch-note main-music)
868 (string? ly:dir? ly:music? ly:music?)
870 (_i "Insert notes from the part @var{what} into a voice called @code{cue},
871 using the transposition defined by @var{pitch-note}. This happens
872 simultaneously with @var{main-music}, which is usually a rest. The
873 argument @var{dir} determines whether the cue notes should be notated
874 as a first or second voice.")
876 (make-music 'QuoteMusic
878 'quoted-context-type 'Voice
879 'quoted-context-id "cue"
880 'quoted-music-name what
881 'quoted-voice-direction dir
882 'quoted-transposition (pitch-of-note pitch-note)
886 #(define-music-function (parser location pitch-note) (ly:music?)
887 (_i "Set instrument transposition")
890 (make-property-set 'instrumentTransposition
891 (ly:pitch-negate (pitch-of-note pitch-note)))
895 #(define-music-function (parser location sym val arg)
896 (symbol? scheme? ly:music?)
897 (_i "Add @code{sym . val} to the @code{tweaks} property of @var{arg}.")
899 (if (equal? (object-property sym 'backend-type?) #f)
901 (ly:warning (_ "cannot find property type-check for ~a") sym)
902 (ly:warning (_ "doing assignment anyway"))))
904 (ly:music-property arg 'tweaks)
906 (ly:music-property arg 'tweaks)))
912 #(define-music-function (parser location music) (ly:music?)
913 (_i "Force any @code{\\repeat volta}, @code{\\repeat tremolo} or
914 @code{\\repeat percent} commands in @var{music} to be interpreted
915 as @code{\\repeat unfold}.")
916 (unfold-repeats music))
921 #(define-music-function (parser location sym val music)
922 (symbol? scheme? ly:music?)
923 (_i "Set @var{sym} to @var{val} in @var{music}.")
925 (set! (ly:music-property music sym) val)