1 %%%% -*- Mode: Scheme -*-
3 %%%% This file is part of LilyPond, the GNU music typesetter.
5 %%%% Copyright (C) 2003--2012 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-void-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)))
47 #(define-void-function (parser location name music) (string? ly:music?)
48 (_i "Define @var{music} as a quotable music expression named
50 (add-quotable parser name music))
52 %% keep these two together
53 afterGraceFraction = #(cons 6 8)
55 #(define-music-function (parser location main grace) (ly:music? ly:music?)
56 (_i "Create @var{grace} note(s) after a @var{main} music expression.")
57 (let ((main-length (ly:music-length main))
58 (fraction (ly:parser-lookup parser 'afterGraceFraction)))
59 (make-simultaneous-music
62 (make-sequential-music
65 (make-music 'SkipMusic
66 'duration (ly:make-duration
68 (* (ly:moment-main-numerator main-length)
70 (* (ly:moment-main-denominator main-length)
72 (make-music 'GraceMusic
76 %% music identifiers not allowed at top-level,
77 %% so this is a music-function instead.
79 #(define-music-function (location parser) ()
80 (_i "Allow a page turn. May be used at toplevel (ie between scores or
81 markups), or inside a score.")
82 (make-music 'EventChord
84 'page-turn-permission 'allow
85 'elements (list (make-music 'PageTurnEvent
86 'break-permission 'allow))))
89 #(define-music-function (parser location property arg item)
90 (symbol-list-or-symbol? list? symbol-list-or-music?)
91 (_i "Override @var{property} for pieces of broken spanner @var{item}
92 with values @var{arg}. @var{item} may either be music in the form of
93 a starting spanner event, or a symbol list in the form
94 @samp{Context.Grob} or just @samp{Grob}. Iff @var{item} is in the
95 form of a spanner event, @var{property} may also have the form
96 @samp{Grob.property} for specifying a directed tweak.")
98 (if (eq? (ly:music-property item 'span-direction) START)
99 #{ \tweak #property #(value-for-spanner-piece arg) #item #}
101 (ly:music-warning item (_ "not a spanner"))
103 (let* ((p (check-grob-path item parser location
107 (name (and p (second p)))
109 (and name (assoc-get name all-grob-descriptions))))
111 (member 'spanner-interface
112 (assoc-get 'interfaces
113 (assoc-get 'meta description))))
115 \override #item . #property =
116 #(value-for-spanner-piece arg)
119 (ly:input-warning location (_ "not a spanner name, `~a'") name)
120 (make-music 'Music))))))
123 #(define-music-function (parser location tag more music)
124 (symbol? ly:music? ly:music?)
125 (_i "Append @var{more} to the @code{elements} of all music
126 expressions in @var{music} that are tagged with @var{tag}.")
127 (music-map (lambda (m)
128 (if (memq tag (ly:music-property m 'tags))
129 (set! (ly:music-property m 'elements)
130 (append (ly:music-property m 'elements)
136 #(define-music-function (parser location proc) (procedure?)
137 (_i "Modify context properties with Scheme procedure @var{proc}.")
138 (make-music 'ApplyContext
142 #(define-music-function (parser location func music) (procedure? ly:music?)
143 (_i"Apply procedure @var{func} to @var{music}.")
147 #(define-music-function (parser location ctx proc) (symbol? procedure?)
148 (_i "Apply function @code{proc} to every layout object in context @code{ctx}")
149 (make-music 'ApplyOutputEvent
154 #(def-grace-function startAppoggiaturaMusic stopAppoggiaturaMusic
155 (_i "Create an appoggiatura from @var{music}"))
157 % for regression testing purposes.
159 #(define-music-function (parser location l r) (pair? pair?)
160 (_i "Testing function: check whether the beam quants @var{l} and @var{r} are correct")
161 (make-grob-property-override 'Beam 'positions (check-quant-callbacks l r)))
163 % for regression testing purposes.
165 #(define-music-function (parser location comp) (procedure?)
166 (_i "Testing function: check whether the slope of the beam is the same as @code{comp}")
167 (make-grob-property-override 'Beam 'positions (check-slope-callbacks comp)))
170 #(define-music-function (parser location music) (ly:music?)
171 (_i "Make voices that switch between staves automatically")
172 (make-autochange-music parser music))
177 #(define-music-function (parser location grob-name offset text)
178 (symbol? number-pair? markup?)
179 (_i "Attach @var{text} to @var{grob-name} at offset @var{offset}
180 (use like @code{\\once})")
181 (make-music 'AnnotateOutputEvent
183 'X-offset (car offset)
184 'Y-offset (cdr offset)
188 #(define-music-function (parser location offset text) (number-pair? markup?)
189 (_i "Attach @var{text} at @var{offset} (use like @code{\\tweak})")
190 (make-music 'AnnotateOutputEvent
191 'X-offset (car offset)
192 'Y-offset (cdr offset)
196 #(define-music-function (parser location type) (string?)
197 (_i "Insert a bar line of type @var{type}")
199 (make-property-set 'whichBar type)
203 #(define-music-function (parser location n) (integer?)
204 (_i "Print a warning if the current bar number is not @var{n}.")
205 (make-music 'ApplyContext
208 (let ((cbn (ly:context-property c 'currentBarNumber)))
209 (if (and (number? cbn) (not (= cbn n)))
210 (ly:input-warning location
211 "Barcheck failed got ~a expect ~a"
215 #(define-event-function (parser location delta) (real?)
216 (_i "Create a fall or doit of pitch interval @var{delta}.")
217 (make-music 'BendAfterEvent
221 #(define-void-function (parser location newfilename) (string?)
222 (_i "Direct output for the current book block to @var{newfilename}.")
223 (set! (paper-variable parser #f 'output-filename) newfilename))
226 #(define-void-function (parser location newsuffix) (string?)
227 (_i "Set the output filename suffix for the current book block to
229 (set! (paper-variable parser #f 'output-suffix) newsuffix))
231 %% \breathe is defined as a music function rather than an event identifier to
232 %% ensure it gets useful input location information: as an event identifier,
233 %% it would have to be wrapped in an EventChord to prevent it from being
234 %% treated as a post_event by the parser
236 #(define-music-function (parser location) ()
237 (_i "Insert a breath mark.")
238 (make-music 'BreathingEvent))
241 #(define-music-function (parser location type) (string?)
242 (_i "Set the current clef to @var{type}.")
243 (make-clef-set type))
247 #(define-music-function (parser location args) (pair?)
248 (_i "Create compound time signatures. The argument is a Scheme list of
249 lists. Each list describes one fraction, with the last entry being the
250 denominator, while the first entries describe the summands in the
251 enumerator. If the time signature consists of just one fraction,
252 the list can be given directly, i.e. not as a list containing a single list.
253 For example, a time signature of (3+1)/8 + 2/4 would be created as
254 @code{\\compoundMeter #'((3 1 8) (2 4))}, and a time signature of (3+2)/8
255 as @code{\\compoundMeter #'((3 2 8))} or shorter
256 @code{\\compoundMeter #'(3 2 8)}.")
257 (let* ((mlen (calculate-compound-measure-length args))
258 (beat (calculate-compound-base-beat args))
259 (beatGrouping (calculate-compound-beat-grouping args))
260 (timesig (cons (ly:moment-main-numerator mlen)
261 (ly:moment-main-denominator mlen))))
263 \once \override Staff.TimeSignature.stencil = #(lambda (grob)
264 (grob-interpret-markup grob (format-compound-time args)))
265 \set Timing.timeSignatureFraction = #timesig
266 \set Timing.baseMoment = #beat
267 \set Timing.beatStructure = #beatGrouping
268 \set Timing.beamExceptions = #'()
269 \set Timing.measureLength = #mlen
273 #(define-music-function (parser location notes) (ly:music?)
274 (_i "Create cross-staff stems")
276 \temporary \override Stem.cross-staff = #cross-staff-connect
277 \temporary \override Flag.style = #'no-flag
279 \revert Stem.cross-staff
284 #(define-music-function (parser location type) (string?)
285 (_i "Set the current cue clef to @var{type}.")
286 (make-cue-clef-set type))
289 #(define-music-function (parser location) ()
290 (_i "Unset the current cue clef.")
291 (make-cue-clef-unset))
294 #(define-music-function
295 (parser location what dir main-music) (string? ly:dir? ly:music?)
296 (_i "Insert contents of quote @var{what} corresponding to @var{main-music},
297 in a CueVoice oriented by @var{dir}.")
298 (make-music 'QuoteMusic
300 'quoted-context-type 'Voice
301 'quoted-context-id "cue"
302 'quoted-music-name what
303 'quoted-voice-direction dir))
306 #(define-music-function
307 (parser location what dir clef main-music) (string? ly:dir? string? ly:music?)
308 (_i "Insert contents of quote @var{what} corresponding to @var{main-music},
309 in a CueVoice oriented by @var{dir}.")
310 (make-music 'QuoteMusic
312 'quoted-context-type 'Voice
313 'quoted-context-id "cue"
314 'quoted-music-name what
315 'quoted-music-clef clef
316 'quoted-voice-direction dir))
321 #(define-music-function (parser location music) (ly:music?)
322 (_i "Display the LilyPond input representation of @var{music}
325 (display-lily-music music parser)
329 #(define-music-function (parser location music) (ly:music?)
330 (_i "Display the internal representation of @var{music} to the console.")
332 (display-scheme-music music)
338 #(define-music-function (parser location music) (ly:music?)
339 (_i "Terminate the next spanner prematurely after exactly one note
340 without the need of a specific end spanner.")
341 (let* ((start-span-evs (filter (lambda (ev)
342 (equal? (ly:music-property ev 'span-direction)
344 (extract-typed-music music 'span-event)))
347 (music-clone m 'span-direction STOP))
349 (end-ev-chord (make-music 'EventChord
350 'elements stop-span-evs))
351 (total (make-music 'SequentialMusic
352 'elements (list music
357 #(define-music-function (parser location music) (ly:music?)
358 (_i "Compatibility function wrapping @code{EventChord} around
359 isolated rhythmic events occuring since version 2.15.28, after
360 expanding repeat chords @samp{q}.")
361 (event-chord-wrap! music parser))
364 #(define-music-function (parser location factor argument) (ly:moment? ly:music?)
365 (_i "Adjust durations of music in @var{argument} by rational @var{factor}.")
366 (let ((orig-duration (ly:music-length argument))
367 (multiplier (ly:make-moment 1 1)))
371 (if (< 0 (ly:moment-main-denominator (ly:music-length mus)))
373 (ly:music-compress mus multiplier)
374 (set! multiplier (ly:moment-mul factor multiplier)))))
375 (extract-named-music argument '(EventChord NoteEvent RestEvent SkipEvent)))
378 (ly:moment-div orig-duration (ly:music-length argument)))
383 #(define-event-function (parser location finger) (number-or-markup?)
384 (_i "Apply @var{finger} as a fingering indication.")
388 (if (number? finger) 'digit 'text)
392 #(define-music-function (parser location mark offset footnote item)
393 ((markup?) number-pair? markup? symbol-list-or-music?)
394 (_i "Make the markup @var{footnote} a footnote on @var{item}. The
395 footnote is marked with a markup @var{mark} moved by @var{offset} with
396 respect to the marked music.
398 If @var{mark} is not given or specified as @var{\\default}, it is
399 replaced by an automatically generated sequence number. If @var{item}
400 is a symbol list of form @samp{Grob} or @samp{Context.Grob}, then
401 grobs of that type will be marked at the current time step in the
402 given context (default @code{Bottom}).
404 If @var{item} is music, the music will get a footnote attached to a
405 grob immediately attached to the event, like @var{\\tweak} does. For
406 attaching a footnote to an @emph{indirectly} caused grob, write
407 @code{\\single\\footnote}, use @var{item} to specify the grob, and
408 follow it with the music to annotate.
410 Like with @code{\\tweak}, if you use a footnote on a following
411 post-event, the @code{\\footnote} command itself needs to be attached
412 to the preceding note or rest as a post-event with @code{-}.")
413 (let ((mus (make-music
415 'X-offset (car offset)
416 'Y-offset (cdr offset)
417 'automatically-numbered (not mark)
418 'text (or mark (make-null-markup))
419 'footnote-text footnote)))
420 #{ \tweak footnote-music #mus #item #}))
423 #(def-grace-function startGraceMusic stopGraceMusic
424 (_i "Insert @var{music} as grace notes."))
427 #(define-scheme-function (parser location descriptions) (list?)
428 (_i "Create a context modification from @var{descriptions}, a list
429 in the format of @code{all-grob-descriptions}.")
432 (list 'assign (car p) (list (cdr p))))
435 harmonicByFret = #(define-music-function (parser location fret music) (number? ly:music?)
436 (_i "Convert @var{music} into mixed harmonics; the resulting notes resemble
437 harmonics played on a fretted instrument by touching the strings at @var{fret}.")
439 \set harmonicDots = ##t
440 \temporary \override TabNoteHead.stencil = #(tab-note-head::print-custom-fret-label (number->string fret))
441 \temporary \override NoteHead.Y-extent = #grob::always-Y-extent-from-stencil
442 \temporary \override NoteHead.stencil = #(lambda (grob) (ly:grob-set-property! grob 'style 'harmonic-mixed)
443 (ly:note-head::print grob))
445 (calc-harmonic-pitch (fret->pitch (number->string fret)) music))
447 \revert TabNoteHead.stencil
448 \revert NoteHead.Y-extent
449 \revert NoteHead.stencil
452 harmonicByRatio = #(define-music-function (parser location ratio music) (number? ly:music?)
453 (_i "Convert @var{music} into mixed harmonics; the resulting notes resemble
454 harmonics played on a fretted instrument by touching the strings at the point
455 given through @var{ratio}.")
457 \set harmonicDots = ##t
458 \temporary \override TabNoteHead.stencil = #(tab-note-head::print-custom-fret-label (ratio->fret ratio))
459 \temporary \override NoteHead.Y-extent = #(ly:make-unpure-pure-container ly:grob::stencil-height
460 (lambda (grob start end)
461 (ly:grob::stencil-height grob)))
462 \temporary \override NoteHead.stencil = #(lambda (grob) (ly:grob-set-property! grob 'style 'harmonic-mixed)
463 (ly:note-head::print grob))
465 (calc-harmonic-pitch (ratio->pitch ratio) music))
467 \revert TabNoteHead.stencil
468 \revert NoteHead.Y-extent
469 \revert NoteHead.stencil
473 #(define-music-function (parser location item) (symbol-list-or-music?)
474 (_i "Set @var{item}'s @samp{transparent} property to @code{#t},
475 making it invisible while still retaining its dimensions.
477 If @var{item} is a symbol list of form @code{GrobName} or
478 @code{Context.GrobName}, the result is an override for the grob name
479 specified by it. If @var{item} is a music expression, the result is
480 the same music expression with an appropriate tweak applied to it.")
482 #{ \tweak transparent ##t #item #}
483 #{ \override #item . transparent = ##t #}))
486 #(define-music-function (parser location) ()
487 (_i "Put the segno variant 'varsegno' at this position into the staff,
488 compatible with the repeat command.")
489 (make-music 'ApplyContext
492 (let ((score-ctx (ly:context-find ctx 'Score)))
493 (if (ly:context? score-ctx)
494 (let ((old-rc (ly:context-property score-ctx 'repeatCommands '())))
495 (if (eq? (memq 'segno-display old-rc) #f)
496 (ly:context-set-property! score-ctx 'repeatCommands (cons 'segno-display old-rc)))))))))
499 #(define-music-function
500 (parser location name) (string?)
501 (_i "Switch instrument to @var{name}, which must be predefined with
502 @code{\\addInstrumentDefinition}.")
503 (let* ((handle (assoc name instrument-definitions))
504 (instrument-def (if handle (cdr handle) '())))
507 (ly:input-warning location "No such instrument: ~a" name))
509 (make-music 'SimultaneousMusic
521 #(define-music-function (parser location tag music)
522 (symbol-list-or-symbol? ly:music?)
523 (_i "Include only elements of @var{music} that are either untagged
524 or tagged with one of the tags in @var{tag}. @var{tag} may be either
525 a single symbol or a list of symbols.")
529 (let ((music-tags (ly:music-property m 'tags)))
530 (or (null? music-tags)
531 (memq tag music-tags))))
533 (let ((music-tags (ly:music-property m 'tags)))
534 (or (null? music-tags)
535 (any (lambda (t) (memq t music-tags)) tag)))))
539 #(define-music-function (parser location tonic pitch-alist)
540 ((ly:pitch? '()) (list? '()))
541 (_i "Set key to @var{tonic} and scale @var{pitch-alist}.
542 If both are null, just generate @code{KeyChangeEvent}.")
543 (cond ((null? tonic) (make-music 'KeyChangeEvent))
545 (ly:parser-error parser (_ "second argument must be pitch list")
547 (make-music 'SequentialMusic 'void #t))
550 (make-music 'KeyChangeEvent
551 'tonic (ly:make-pitch 0 0 0)
552 'pitch-alist pitch-alist)
556 #(define-music-function (parser location music) (ly:music?)
557 (_i "Remove cue notes from @var{music}.")
560 (if (and (string? (ly:music-property mus 'quoted-music-name))
561 (string=? (ly:music-property mus 'quoted-context-id "") "cue"))
562 (ly:music-property mus 'element)
569 #(define-music-function (parser location label) (symbol?)
570 (_i "Create @var{label} as a bookmarking label.")
571 (make-music 'EventChord
574 'elements (list (make-music 'LabelEvent
575 'page-label label))))
579 #(define-void-function (parser location language) (string?)
580 (_i "Set note names for language @var{language}.")
581 (note-names-language parser language))
583 languageSaveAndChange =
584 #(define-void-function (parser location language) (string?)
585 (_i "Store the previous pitchnames alist, and set a new one.")
586 (set! previous-pitchnames pitchnames)
587 (note-names-language parser language))
590 #(define-void-function (parser location) ()
591 (_i "Restore a previously-saved pitchnames alist.")
592 (if previous-pitchnames
594 (set! pitchnames previous-pitchnames)
595 (ly:parser-set-note-names parser pitchnames))
596 (ly:input-warning location (_ "No other language was defined previously. Ignoring."))))
600 #(define-music-function (parser location arg) (ly:music?)
601 (_i "Display chords in @var{arg} as clusters.")
602 (music-map note-to-cluster arg))
605 #(define-music-function (parser location around to scale music)
606 (ly:pitch? ly:pitch? ly:music? ly:music?)
607 (_i "Invert @var{music} about @var{around} using @var{scale} and
608 transpose from @var{around} to @var{to}.")
609 (let ((inverter (make-modal-inverter around to scale)))
610 (change-pitches music inverter)
614 #(define-music-function (parser location from to scale music)
615 (ly:pitch? ly:pitch? ly:music? ly:music?)
616 (_i "Transpose @var{music} from pitch @var{from} to pitch @var{to}
618 (let ((transposer (make-modal-transposer from to scale)))
619 (change-pitches music transposer)
623 #(define-music-function
624 (parser location around to music) (ly:pitch? ly:pitch? ly:music?)
625 (_i "Invert @var{music} about @var{around} and
626 transpose from @var{around} to @var{to}.")
627 (music-invert around to music))
630 #(define-music-function
631 (parser location label) ((scheme? '()))
632 "Make the music for the \\mark command."
633 (let* ((set (and (integer? label)
634 (context-spec-music (make-property-set 'rehearsalMark label)
636 (ev (make-music 'MarkEvent
640 (make-sequential-music (list set ev))
642 (set! (ly:music-property ev 'label) label)
646 #(define-music-function (parser location proc mus) (procedure? ly:music?)
647 (_i "Apply @var{proc} to @var{mus} and all of the music it contains.")
648 (music-map proc mus))
650 %% noPageBreak and noPageTurn are music functions (not music indentifiers),
651 %% because music identifiers are not allowed at top-level.
653 #(define-music-function (location parser) ()
654 (_i "Forbid a page break. May be used at toplevel (i.e., between scores or
655 markups), or inside a score.")
656 (make-music 'EventChord
658 'page-break-permission 'forbid
659 'elements (list (make-music 'PageBreakEvent
660 'break-permission '()))))
663 #(define-music-function (location parser) ()
664 (_i "Forbid a page turn. May be used at toplevel (i.e., between scores or
665 markups), or inside a score.")
666 (make-music 'EventChord
668 'page-turn-permission 'forbid
669 'elements (list (make-music 'PageTurnEvent
670 'break-permission '()))))
675 #(define-music-function (parser location pitch) (ly:pitch?)
677 (make-music 'RelativeOctaveCheck
681 #(define-music-function (parser location item) (symbol-list-or-music?)
682 (_i "Set @var{item}'s @samp{stencil} property to @code{#f},
683 effectively omitting it without taking up space.
685 If @var{item} is a symbol list of form @code{GrobName} or
686 @code{Context.GrobName}, the result is an override for the grob name
687 specified by it. If @var{item} is a music expression, the result is
688 the same music expression with an appropriate tweak applied to it.")
690 #{ \tweak stencil ##f #item #}
691 #{ \override #item . stencil = ##f #}))
694 #(define-music-function (parser location music) (ly:music?)
695 (_i "Set @code{once} to @code{#t} on all layout instruction events in @var{music}.")
698 (cond ((music-is-of-type? m 'layout-instruction-event)
699 (set! (ly:music-property m 'once) #t))
700 ((ly:duration? (ly:music-property m 'duration))
701 (ly:music-warning m (_ "Cannot apply \\once to timed music"))))
706 #(define-music-function (parser location octave) (integer?)
707 (_i "Set the octavation.")
708 (make-music 'OttavaMusic
709 'ottava-number octave))
711 overrideTimeSignatureSettings =
712 #(define-music-function
713 (parser location time-signature base-moment beat-structure beam-exceptions)
714 (pair? pair? cheap-list? cheap-list?)
716 (_i "Override @code{timeSignatureSettings}
717 for time signatures of @var{time-signature} to have settings
718 of @var{base-moment}, @var{beat-structure}, and @var{beam-exceptions}.")
720 ;; TODO -- add warning if largest value of grouping is
721 ;; greater than time-signature.
722 (let ((setting (make-setting base-moment beat-structure beam-exceptions)))
723 (override-time-signature-setting time-signature setting)))
726 #(define-music-function (parser location grob-property-path value)
727 (symbol-list? scheme?)
729 (_i "Set the grob property specified by @var{grob-property-path} to
730 @var{value}. @var{grob-property-path} is a symbol list of the form
731 @code{Context.GrobName.property} or @code{GrobName.property}, possibly
732 with subproperties given as well.")
733 (let ((p (check-grob-path grob-property-path parser location
737 (make-music 'ApplyOutputEvent
738 'context-type (first p)
740 (lambda (grob orig-context context)
742 (cdr (assoc 'name (ly:grob-property grob 'meta)))
744 (ly:grob-set-nested-property!
745 grob (cddr p) value))))
746 (make-music 'Music))))
753 %% pageBreak and pageTurn are music functions (iso music indentifiers),
754 %% because music identifiers are not allowed at top-level.
756 #(define-music-function (location parser) ()
757 (_i "Force a page break. May be used at toplevel (i.e., between scores or
758 markups), or inside a score.")
759 (make-music 'EventChord
761 'line-break-permission 'force
762 'page-break-permission 'force
763 'elements (list (make-music 'LineBreakEvent
764 'break-permission 'force)
765 (make-music 'PageBreakEvent
766 'break-permission 'force))))
769 #(define-music-function (location parser) ()
770 (_i "Force a page turn between two scores or top-level markups.")
771 (make-music 'EventChord
773 'line-break-permission 'force
774 'page-break-permission 'force
775 'page-turn-permission 'force
776 'elements (list (make-music 'LineBreakEvent
777 'break-permission 'force)
778 (make-music 'PageBreakEvent
779 'break-permission 'force)
780 (make-music 'PageTurnEvent
781 'break-permission 'force))))
784 #(define-void-function (parser location voice-ids music) (list? ly:music?)
785 (_i "Define parallel music sequences, separated by '|' (bar check signs),
786 and assign them to the identifiers provided in @var{voice-ids}.
788 @var{voice-ids}: a list of music identifiers (symbols containing only letters)
790 @var{music}: a music sequence, containing BarChecks as limiting expressions.
795 \\parallelMusic #'(A B C) {
805 (define (bar-check? m)
806 "Checks whether m is a bar check."
807 (eq? (ly:music-property m 'name) 'BarCheck))
808 (define (recurse-and-split music)
809 "This returns either a list of music split along barchecks, or
811 (let ((elt (ly:music-property music 'element))
812 (elts (ly:music-property music 'elements)))
813 (cond ((ly:music? elt)
814 (let ((lst (recurse-and-split elt)))
818 (let ((res (music-clone music 'element x)))
819 (if (ly:input-location?
820 (ly:music-property x 'origin))
821 (set! (ly:music-property res 'origin)
822 (ly:music-property x 'origin)))
825 ((any bar-check? elts)
826 (let* ((voices (apply circular-list
827 (make-list (length voice-ids)
829 (current-voices voices)
830 (current-sequence '()))
833 (define (push-music m)
834 "Push the music expression into the current sequence"
835 (set! current-sequence (cons m current-sequence)))
836 (define (change-voice)
837 "Stores the previously built sequence into the current voice and
838 change to the following voice."
839 (set-car! current-voices
840 (cons (reverse! current-sequence)
841 (car current-voices)))
842 (set! current-sequence '())
843 (set! current-voices (cdr current-voices)))
844 (for-each (lambda (m)
845 (let ((split? (recurse-and-split m)))
854 (if (bar-check? m) (change-voice))))))
856 (if (pair? current-sequence) (change-voice))
857 ;; un-circularize `voices' and reorder the voices
859 (set! voices (map reverse!
860 (list-head voices (length voice-ids))))
862 ;; check sequence length
863 (apply for-each (lambda seqs
864 (define (seq-len seq)
865 (reduce ly:moment-add
867 (map ly:music-length seq)))
868 (let ((moment-reference (seq-len (car seqs))))
869 (for-each (lambda (seq)
870 (if (not (equal? (seq-len seq)
876 (_ "Bars in parallel music don't have the same length"))))
881 (set! lst (concatenate! lst))
882 (let ((res (music-clone music 'elements lst)))
884 (ly:input-location? (ly:music-property
887 (set! (ly:music-property res 'origin)
888 (ly:music-property (car lst) 'origin)))
892 (let ((voices (recurse-and-split music)))
895 ;; bind voice identifiers to the voices
896 (for-each (lambda (voice-id voice)
897 (ly:parser-define! parser voice-id voice))
899 (ly:music-warning music
900 (_ "ignoring parallel music without barchecks")))))
903 #(define-music-function (parser loc arg) (ly:music?)
904 (_i "Tag @var{arg} to be parenthesized.")
906 (if (memq 'event-chord (ly:music-property arg 'types))
907 ;; arg is an EventChord -> set the parenthesize property
908 ;; on all child notes and rests
911 (if (or (memq 'note-event (ly:music-property ev 'types))
912 (memq 'rest-event (ly:music-property ev 'types)))
913 (set! (ly:music-property ev 'parenthesize) #t)))
914 (ly:music-property arg 'elements))
915 ;; No chord, simply set property for this expression:
916 (set! (ly:music-property arg 'parenthesize) #t))
920 #(define-music-function (parser location part1 part2) (ly:music? ly:music?)
921 (_i "Take the music in @var{part1} and @var{part2} and typeset so
922 that they share a staff.")
923 (make-part-combine-music parser
924 (list part1 part2) #f))
927 #(define-music-function (parser location part1 part2) (ly:music? ly:music?)
928 (_i "Take the music in @var{part1} and @var{part2} and typeset so
929 that they share a staff with stems directed upward.")
930 (make-part-combine-music parser
931 (list part1 part2) UP))
934 #(define-music-function (parser location part1 part2) (ly:music? ly:music?)
935 (_i "Take the music in @var{part1} and @var{part2} and typeset so
936 that they share a staff with stems directed downward.")
937 (make-part-combine-music parser
938 (list part1 part2) DOWN))
941 #(define-music-function (location parser type once) (symbol-or-boolean? boolean?)
942 (_i "Override the part-combiner.")
943 (make-music 'EventChord
944 'elements (list (make-music 'PartCombineForceEvent
947 partcombineApart = \partcombineForce #'apart ##f
948 partcombineApartOnce = \partcombineForce #'apart ##t
949 partcombineChords = \partcombineForce #'chords ##f
950 partcombineChordsOnce = \partcombineForce #'chords ##t
951 partcombineUnisono = \partcombineForce #'unisono ##f
952 partcombineUnisonoOnce = \partcombineForce #'unisono ##t
953 partcombineSoloI = \partcombineForce #'solo1 ##f
954 partcombineSoloIOnce = \partcombineForce #'solo1 ##t
955 partcombineSoloII = \partcombineForce #'solo2 ##f
956 partcombineSoloIIOnce = \partcombineForce #'solo2 ##t
957 partcombineAutomatic = \partcombineForce ##f ##f
958 partcombineAutomaticOnce = \partcombineForce ##f ##t
961 #(define-music-function (parser location dur) (ly:duration?)
962 (_i "Make a partial measure.")
964 ;; We use `descend-to-context' here instead of `context-spec-music' to
965 ;; ensure \partial still works if the Timing_translator is moved
967 (context-spec-music (make-music 'PartialSet
969 'partial-duration dur)
974 #(define-music-function
975 (parser location main-note secondary-note)
976 (ly:music? ly:music?)
977 (_i "Print a trill with @var{main-note} as the main note of the trill and
978 print @var{secondary-note} as a stemless note head in parentheses.")
979 (let* ((get-notes (lambda (ev-chord)
980 (extract-named-music ev-chord 'NoteEvent)))
981 (sec-note-events (get-notes secondary-note))
982 (trill-events (extract-named-music main-note 'TrillSpanEvent)))
983 (if (pair? sec-note-events)
985 (let* ((trill-pitch (ly:music-property (car sec-note-events) 'pitch))
986 (forced (ly:music-property (car sec-note-events) 'force-accidental)))
988 (if (ly:pitch? trill-pitch)
989 (for-each (lambda (m)
990 (ly:music-set-property! m 'pitch trill-pitch)) trill-events)
992 (ly:input-warning location (_ "Second argument of \\pitchedTrill should be single note: "))
993 (display sec-note-events)))
996 (for-each (lambda (m)
997 (ly:music-set-property! m 'force-accidental forced))
1002 #(define-music-function (parser location tag more music)
1003 (symbol? ly:music? ly:music?)
1004 (_i "Add @var{more} to the front of @code{elements} of all music
1005 expressions in @var{music} that are tagged with @var{tag}.")
1006 (music-map (lambda (m)
1007 (if (memq tag (ly:music-property m 'tags))
1008 (set! (ly:music-property m 'elements)
1009 (cons more (ly:music-property m 'elements))))
1014 #(define-music-function (parser location what main-music) (string? ly:music?)
1015 (_i "Indicate a section of music to be quoted. @var{what} indicates the name
1016 of the quoted voice, as specified in an @code{\\addQuote} command.
1017 @var{main-music} is used to indicate the length of music to be quoted;
1018 usually contains spacers or multi-measure rests.")
1019 (make-music 'QuoteMusic
1021 'quoted-music-name what))
1024 #(define-music-function (parser location pitch music)
1025 ((ly:pitch? (ly:make-pitch 0 0 0)) ly:music?)
1026 (_i "Make @var{music} relative to @var{pitch} (default @code{c'}).")
1027 (ly:make-music-relative! music pitch)
1028 (make-music 'RelativeOctaveMusic
1032 #(define-music-function (parser location tag music)
1033 (symbol-list-or-symbol? ly:music?)
1034 (_i "Remove elements of @var{music} that are tagged with one of the
1035 tags in @var{tag}. @var{tag} may be either a single symbol or a list
1040 (not (memq tag (ly:music-property m 'tags))))
1042 (let ((music-tags (ly:music-property m 'tags)))
1043 (or (null? music-tags)
1044 (not (any (lambda (t) (memq t music-tags)) tag))))))
1047 resetRelativeOctave =
1048 #(define-music-function (parser location pitch) (ly:pitch?)
1049 (_i "Set the octave inside a \\relative section.")
1051 (make-music 'SequentialMusic
1052 'to-relative-callback
1053 (lambda (music last-pitch) pitch)))
1056 #(define-music-function (parser location music)
1058 (_i "Return @var{music} in reverse order.")
1059 (retrograde-music music))
1061 revertTimeSignatureSettings =
1062 #(define-music-function
1063 (parser location time-signature)
1066 (_i "Revert @code{timeSignatureSettings}
1067 for time signatures of @var{time-signature}.")
1068 (revert-time-signature-setting time-signature))
1071 #(define-event-function (parser location finger) (number-or-markup?)
1072 (_i "Apply @var{finger} as a fingering indication.")
1076 (if (number? finger) 'digit 'text)
1080 #(define-music-function (parser location fraction music)
1081 (fraction? ly:music?)
1082 (_i "Multiply the duration of events in @var{music} by @var{fraction}.")
1083 (ly:music-compress music
1084 (ly:make-moment (car fraction) (cdr fraction))))
1087 #(define-scheme-function (parser location ctx music)
1088 ((symbol?) ly:music?)
1089 (_i "Take the layout instruction events from @var{music}, optionally
1090 restricted to those applying to context type @var{ctx}, and return
1091 a context modification duplicating their effect.")
1092 (let ((mods (ly:make-context-mod)))
1094 (if (music-is-of-type? m 'layout-instruction-event)
1097 (case (ly:music-property m 'name)
1100 (ly:music-property m 'symbol)
1101 (ly:music-property m 'value)))
1104 (ly:music-property m 'symbol)))
1107 (ly:music-property m 'symbol)
1108 (ly:music-property m 'grob-value)
1110 ((ly:music-property m 'grob-property #f) => list)
1112 (ly:music-property m 'grob-property-path)))))
1115 (ly:music-property m 'symbol)
1117 ((ly:music-property m 'grob-property #f) => list)
1119 (ly:music-property m 'grob-property-path)))))))
1120 (case (ly:music-property m 'name)
1122 (ly:add-context-mod mods
1124 (ly:music-property m 'procedure))))
1125 ((ContextSpeccedMusic)
1127 (eq? ctx (ly:music-property m 'context-type)))
1128 (musicop (ly:music-property m 'element))))
1130 (let ((callback (ly:music-property m 'elements-callback)))
1131 (if (procedure? callback)
1132 (for-each musicop (callback m))))))))
1137 #(define-music-function (parser location offsets item)
1138 (list? symbol-list-or-music?)
1139 (_i "Offset control-points of @var{item} by @var{offsets}. The
1140 argument is a list of number pairs or list of such lists. Each
1141 element of a pair represents an offset to one of the coordinates of a
1142 control-point. If @var{item} is a string, the result is
1143 @code{\\once\\override} for the specified grob type. If @var{item} is
1144 a music expression, the result is the same music expression with an
1145 appropriate tweak applied.")
1146 (define (shape-curve grob)
1147 (let* ((orig (ly:grob-original grob))
1148 (siblings (if (ly:spanner? grob)
1149 (ly:spanner-broken-into orig) '()))
1150 (total-found (length siblings))
1151 (function (assoc-get 'control-points
1152 (reverse (ly:grob-basic-properties grob))))
1153 (coords (function grob)))
1155 (define (offset-control-points offsets)
1159 (lambda (x y) (coord-translate x y))
1162 (define (helper sibs offs)
1164 (if (eq? (car sibs) grob)
1165 (offset-control-points (car offs))
1166 (helper (cdr sibs) (cdr offs)))
1169 ;; we work with lists of lists
1170 (if (or (null? offsets)
1171 (not (list? (car offsets))))
1172 (set! offsets (list offsets)))
1174 (if (>= total-found 2)
1175 (helper siblings offsets)
1176 (offset-control-points (car offsets)))))
1177 #{ \tweak control-points #shape-curve #item #})
1180 #(define-music-function (parser location dur dots arg)
1181 (integer? integer? ly:music?)
1182 (_i "Change the duration of @var{arg} by adding @var{dur} to the
1183 @code{durlog} of @var{arg} and @var{dots} to the @code{dots} of @var{arg}.")
1187 (shift-one-duration-log x dur dots)) arg))
1190 #(define-music-function (parser location overrides music)
1191 (ly:music? ly:music?)
1192 (_i "Convert @var{overrides} to tweaks and apply them to @var{music}.
1193 This does not convert @code{\\revert}, @code{\\set} or @code{\\unset}.")
1194 (set! (ly:music-property music 'tweaks)
1196 (lambda (m) (eq? (ly:music-property m 'name)
1200 ((ly:music-property m 'grob-property #f) => list)
1202 (ly:music-property m 'grob-property-path)))))
1203 (acons (cons (ly:music-property m 'symbol) ;grob name
1205 p ;grob property path
1206 (car p))) ;grob property
1207 (ly:music-property m 'grob-value)
1209 (ly:music-property music 'tweaks)
1214 #(define-music-function (parser location dur) (ly:duration?)
1215 (_i "Skip forward by @var{dur}.")
1216 (make-music 'SkipMusic
1221 #(def-grace-function startSlashedGraceMusic stopSlashedGraceMusic
1222 (_i "Create slashed graces (slashes through stems, but no slur) from
1223 the following music expression"))
1226 #(define-music-function (parser location parameters) (list?)
1227 (_i "Set the system stretch, by reading the 'system-stretch property of
1228 the `parameters' assoc list.")
1230 \overrideProperty Score.NonMusicalPaperColumn.line-break-system-details
1231 #(list (cons 'alignment-extra-space (cdr (assoc 'system-stretch parameters)))
1232 (cons 'system-Y-extent (cdr (assoc 'system-Y-extent parameters))))
1236 #(define-music-function (parser location style heads music)
1237 (symbol? symbol-list-or-symbol? ly:music?)
1238 (_i "Set @var{heads} in @var{music} to @var{style}.")
1239 (style-note-heads heads style music))
1242 #(define-music-function (parser location tag music) (symbol-list-or-symbol? ly:music?)
1243 (_i "Tag the following @var{music} with @var{tag} and return the
1244 result, by adding the single symbol or symbol list @var{tag} to the
1245 @code{tags} property of @var{music}.")
1248 (ly:music-property music 'tags)
1249 ((if (symbol? tag) cons append)
1251 (ly:music-property music 'tags)))
1255 #(define-music-function (parser location music)
1257 (_i "Make any @code{\\override} in @var{music} replace an existing
1258 grob property value only temporarily, restoring the old value when a
1259 corresponding @code{\\revert} is executed. This is achieved by
1260 clearing the @samp{pop-first} property normally set on
1263 An @code{\\override}/@/@code{\\revert} sequence created by using
1264 @code{\\temporary} and @code{\\undo} on the same music containing
1265 overrides will cancel out perfectly or cause a@tie{}warning.
1267 Non-property-related music is ignored, warnings are generated for any
1268 property-changing music that isn't an @code{\\override}.")
1272 (and (or (music-is-of-type? m 'layout-instruction-event)
1273 (music-is-of-type? m 'context-specification)
1274 (music-is-of-type? m 'apply-context)
1275 (music-is-of-type? m 'time-signature-music))
1276 (case (ly:music-property m 'name)
1278 (if (ly:music-property m 'pop-first #f)
1279 (set! (ly:music-property m 'pop-first) '()))
1280 (if (ly:music-property m 'once #f)
1281 (set! (ly:music-property m 'once) '()))
1283 ((ContextSpeccedMusic)
1288 (ly:input-warning location (_ "Cannot make ~a revertible")
1289 (ly:music-property m 'name))
1296 #(define-music-function (parser location beat-structure fraction)
1297 ((number-list? '()) fraction?)
1298 (_i "Set @var{fraction} as time signature, with optional
1299 number list @var{beat-structure} before it.")
1300 (make-music 'TimeSignatureMusic
1301 'numerator (car fraction)
1302 'denominator (cdr fraction)
1303 'beat-structure beat-structure))
1306 #(define-music-function (parser location fraction music)
1307 (fraction? ly:music?)
1308 (_i "Scale @var{music} in time by @var{fraction}.")
1309 (make-music 'TimeScaledMusic
1310 'element (ly:music-compress music (ly:make-moment (car fraction) (cdr fraction)))
1311 'numerator (car fraction)
1312 'denominator (cdr fraction)))
1315 #(define-music-function
1316 (parser location from to music)
1317 (ly:pitch? ly:pitch? ly:music?)
1319 (_i "Transpose @var{music} from pitch @var{from} to pitch @var{to}.")
1320 (make-music 'TransposedMusic
1321 'element (ly:music-transpose music (ly:pitch-diff to from))))
1323 transposedCueDuring =
1324 #(define-music-function
1325 (parser location what dir pitch main-music)
1326 (string? ly:dir? ly:pitch? ly:music?)
1328 (_i "Insert notes from the part @var{what} into a voice called @code{cue},
1329 using the transposition defined by @var{pitch}. This happens
1330 simultaneously with @var{main-music}, which is usually a rest. The
1331 argument @var{dir} determines whether the cue notes should be notated
1332 as a first or second voice.")
1334 (make-music 'QuoteMusic
1336 'quoted-context-type 'Voice
1337 'quoted-context-id "cue"
1338 'quoted-music-name what
1339 'quoted-voice-direction dir
1340 ;; following is inverse of instrumentTransposition for
1341 ;; historical reasons
1342 'quoted-transposition pitch))
1345 #(define-music-function (parser location pitch) (ly:pitch?)
1346 (_i "Set instrument transposition")
1349 (make-property-set 'instrumentTransposition pitch)
1353 #(define-music-function (parser location ratio tuplet-span music)
1354 (fraction? (ly:duration? '()) ly:music?)
1355 (_i "Scale the given @var{music} to tuplets. @var{ratio} is a
1356 fraction that specifies how many notes are played in place of the
1357 nominal value: it will be @samp{3/2} for triplets, namely three notes
1358 being played in place of two. If the optional duration
1359 @var{tuplet-span} is specified, it is used instead of
1360 @code{tupletSpannerDuration} for grouping the tuplets.
1363 \\tuplet 3/2 4 @{ c8 c c c c c @}
1365 will result in two groups of three tuplets, each group lasting for a
1367 (make-music 'TimeScaledMusic
1368 'element (ly:music-compress
1370 (ly:make-moment (cdr ratio) (car ratio)))
1371 'numerator (cdr ratio)
1372 'denominator (car ratio)
1373 'duration tuplet-span))
1376 #(define-music-function (parser location tuplet-span)
1378 (_i "Set @code{tupletSpannerDuration}, the length into which
1379 @code{\\tuplet} without an explicit @samp{tuplet-span} argument of its
1380 own will group its tuplets, to the duration @var{tuplet-span}. To
1381 revert to the default of not subdividing the contents of a @code{\\tuplet}
1382 command without explicit @samp{tuplet-span}, use
1384 \\tupletSpan \\default
1388 #{ \set tupletSpannerDuration = #(ly:duration-length tuplet-span) #}
1389 #{ \unset tupletSpannerDuration #}))
1392 #(define-music-function (parser location prop value item)
1393 (symbol-list-or-symbol? scheme? symbol-list-or-music?)
1394 (_i "Add a tweak to the following @var{item}, usually music.
1395 Layout objects created by @var{item} get their property @var{prop}
1396 set to @var{value}. If @var{prop} has the form @samp{Grob.property}, like with
1398 \\tweak Accidental.color #red cis'
1400 an indirectly created grob (@samp{Accidental} is caused by
1401 @samp{NoteHead}) can be tweaked; otherwise only directly created grobs
1404 As a special case, @var{item} may be a symbol list specifying a grob
1405 path, in which case @code{\\once\\override} is called on it instead of
1406 creating tweaked music. This is mainly useful when using
1407 @code{\\tweak} as as a component for building other functions.
1409 @var{prop} can contain additional elements in which case a nested
1410 property (inside of an alist) is tweaked.")
1411 (if (ly:music? item)
1412 (let ((p (check-grob-path prop parser location
1417 (set! (ly:music-property item 'tweaks)
1418 (acons (cond ((pair? (cddr p)) p)
1420 (cons (car p) (cadr p)))
1423 (ly:music-property item 'tweaks))))
1425 ;; We could just throw this at \override and let it sort this
1426 ;; out on its own, but this way we should get better error
1428 (let ((a (check-grob-path item parser location
1429 #:default 'Bottom #:min 2 #:max 2))
1430 (b (check-grob-path prop parser location
1433 #{ \once\override #(append a b) = #value #}
1434 (make-music 'Music)))))
1437 #(define-music-function (parser location music)
1439 (_i "Convert @code{\\override} and @code{\\set} in @var{music} to
1440 @code{\\revert} and @code{\\unset}, respectively. Any reverts and
1441 unsets already in @var{music} cause a warning. Non-property-related music is ignored.")
1448 (lambda (m) (or (music-is-of-type? m 'layout-instruction-event)
1449 (music-is-of-type? m 'context-specification)
1450 (music-is-of-type? m 'apply-context)
1451 (music-is-of-type? m 'time-signature-music)))
1452 (lambda (m overrides)
1453 (case (ly:music-property m 'name)
1456 (make-music 'RevertProperty
1457 'symbol (ly:music-property m 'symbol)
1460 ((ly:music-property m 'grob-property #f) => list)
1462 (ly:music-property m 'grob-property-path))))
1466 (make-music 'PropertyUnset
1467 'symbol (ly:music-property m 'symbol))
1469 ((ContextSpeccedMusic)
1471 (make-music 'ContextSpeccedMusic
1472 'element (loop (ly:music-property m 'element))
1473 'context-type (ly:music-property m 'context-type))
1478 (ly:input-warning location (_ "Cannot revert ~a")
1479 (ly:music-property m 'name))
1485 ((null? lst) (make-music 'Music))
1486 ((null? (cdr lst)) (car lst))
1487 (else (make-sequential-music lst))))))
1490 #(define-music-function (parser location music) (ly:music?)
1491 (_i "Force any @code{\\repeat volta}, @code{\\repeat tremolo} or
1492 @code{\\repeat percent} commands in @var{music} to be interpreted
1493 as @code{\\repeat unfold}.")
1494 (unfold-repeats music))
1497 #(define-void-function (parser location arg) (scheme?)
1498 (_i "Accept a scheme argument, return a void expression.
1499 Use this if you want to have a scheme expression evaluated
1500 because of its side-effects, but its value ignored."))
1503 #(define-music-function (parser location sym val music)
1504 (symbol? scheme? ly:music?)
1505 (_i "Set @var{sym} to @var{val} in @var{music}.")
1507 (set! (ly:music-property music sym) val)