1 %%%% This file is part of LilyPond, the GNU music typesetter.
3 %%%% Copyright (C) 2003--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
4 %%%% Jan Nieuwenhuizen <janneke@gnu.org>
6 %%%% LilyPond is free software: you can redistribute it and/or modify
7 %%%% it under the terms of the GNU General Public License as published by
8 %%%% the Free Software Foundation, either version 3 of the License, or
9 %%%% (at your option) any later version.
11 %%%% LilyPond is distributed in the hope that it will be useful,
12 %%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
13 %%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 %%%% GNU General Public License for more details.
16 %%%% You should have received a copy of the GNU General Public License
17 %%%% 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
58 (parser location main grace
)
60 (_i
"Create @var{grace} note(s) after a @var{main} music expression.")
62 ((main-length
(ly
:music-length main
))
63 (fraction
(ly
:parser-lookup parser
'afterGraceFraction
)))
65 (make-simultaneous-music
68 (make-sequential-music
71 (make-music
'SkipMusic
72 'duration
(ly
:make-duration
74 (* (ly
:moment-main-numerator main-length
)
76 (* (ly
:moment-main-denominator main-length
)
78 (make-music
'GraceMusic
82 %% music identifiers not allowed at top-level,
83 %% so this is a music-function instead.
85 #(define-music-function
(location parser
) ()
86 (_i
"Allow a page turn. May be used at toplevel (ie between scores or
87 markups), or inside a score.")
88 (make-music
'EventChord
90 'page-turn-permission
'allow
91 'elements
(list
(make-music
'PageTurnEvent
92 'break-permission
'allow
))))
95 #(define-music-function
(parser location proc
) (procedure?
)
96 (_i
"Modify context properties with Scheme procedure @var{proc}.")
97 (make-music
'ApplyContext
102 #(define-music-function
(parser location func music
) (procedure? ly
:music?
)
103 (_i
"Apply procedure @var{func} to @var{music}.")
107 #(define-music-function
(parser location ctx proc
) (symbol? procedure?
)
108 (_i
"Apply function @code{proc} to every layout object in context @code{ctx}")
109 (make-music
'ApplyOutputEvent
115 #(def-grace-function startAppoggiaturaMusic stopAppoggiaturaMusic
116 (_i
"Create an appoggiatura from @var{music}"))
118 % for regression testing purposes.
120 #(define-music-function
(parser location l r
) (pair? pair?
)
121 (_i
"Testing function: check whether the beam quants @var{l} and @var{r} are correct")
122 (make-grob-property-override
'Beam
'positions
123 (ly
:make-simple-closure
124 (ly
:make-simple-closure
126 (list chain-grob-member-functions `
(,cons
0 0))
127 (check-quant-callbacks l r
))))))
129 % for regression testing purposes.
131 #(define-music-function
(parser location comp
) (procedure?
)
132 (_i
"Testing function: check whether the slope of the beam is the same as @code{comp}")
133 (make-grob-property-override
'Beam
'positions
134 (ly
:make-simple-closure
135 (ly
:make-simple-closure
137 (list chain-grob-member-functions `
(,cons
0 0))
138 (check-slope-callbacks comp
))))))
141 #(define-music-function
(parser location music
) (ly
:music?
)
142 (_i
"Make voices that switch between staves automatically")
143 (make-autochange-music parser music
))
148 #(define-music-function
(parser location grob-name offset text
)
149 (symbol? number-pair? markup?
)
150 (_i
"Attach @var{text} to @var{grob-name} at offset @var{offset}
151 use like @code{\\once})")
152 (make-music
'AnnotateOutputEvent
154 'X-offset
(car offset
)
155 'Y-offset
(cdr offset
)
159 #(define-music-function
(parser location offset text
) (number-pair? markup?
)
160 (_i
"Attach @var{text} at @var{offset} (use like @code{\\tweak})")
161 (make-music
'AnnotateOutputEvent
162 'X-offset
(car offset
)
163 'Y-offset
(cdr offset
)
167 #(define-music-function
(parser location type
) (string?
)
168 (_i
"Insert a bar line of type @var{type}")
170 (make-property-set
'whichBar type
)
174 #(define-music-function
(parser location n
) (integer?
)
175 (_i
"Print a warning if the current bar number is not @var{n}.")
176 (make-music
'ApplyContext
181 ((cbn
(ly
:context-property
c 'currentBarNumber
)))
182 (if
(and
(number? cbn
) (not
(= cbn n
)))
183 (ly
:input-message location
"Barcheck failed got ~a expect ~a"
187 #(define-music-function
(parser location delta
) (real?
)
188 (_i
"Create a fall or doit of pitch interval @var{delta}.")
189 (make-music
'BendAfterEvent
193 #(define-music-function
(parser location newfilename
) (string?
)
194 (_i
"Direct output for the current book block to @var{newfilename}.")
195 (set
! book-filename newfilename
)
196 (make-music
'SequentialMusic
'void
#t
))
199 #(define-music-function
(parser location newsuffix
) (string?
)
200 (_i
"Set the output filename suffix for the current book block to
202 (set
! book-output-suffix newsuffix
)
203 (make-music
'SequentialMusic
'void
#t
))
207 #(define-music-function
(parser location
) ()
208 (_i
"Insert a breath mark.")
209 (make-music
'EventChord
211 'elements
(list
(make-music
'BreathingEvent
))))
216 #(define-music-function
(parser location type
) (string?
)
217 (_i
"Set the current clef to @var{type}.")
218 (make-clef-set type
))
221 #(define-music-function
222 (parser location what dir main-music
) (string? ly
:dir? ly
:music?
)
223 (_i
"Insert contents of quote @var{what} corresponding to @var{main-music},
224 in a CueVoice oriented by @var{dir}.")
225 (make-music
'QuoteMusic
227 'quoted-context-type
'Voice
228 'quoted-context-id
"cue"
229 'quoted-music-name what
230 'quoted-voice-direction dir
236 #(define-music-function
(parser location music
) (ly
:music?
)
237 (_i
"Display the LilyPond input representation of @var{music}
240 (display-lily-music music parser
)
244 #(define-music-function
(parser location music
) (ly
:music?
)
245 (_i
"Display the internal representation of @var{music} to the console.")
247 (display-scheme-music music
)
253 #(define-music-function
(parser location music
) (ly
:music?
)
254 (_i
"Terminate the next spanner prematurely after exactly one note without the need of a specific end spanner.")
255 (if
(eq?
(ly
:music-property music
'name
) 'EventChord
)
257 ((elts
(ly
:music-property music
'elements
))
258 (start-span-evs
(filter
(lambda
(ev
)
259 (and
(music-has-type ev
'span-event
)
260 (equal?
(ly
:music-property ev
'span-direction
)
265 (let
* ((c (music-clone m
)))
266 (set
! (ly
:music-property
c 'span-direction
) STOP
)
269 (end-ev-chord
(make-music
'EventChord
270 'elements stop-span-evs
))
271 (total
(make-music
'SequentialMusic
272 'elements
(list music
276 (ly
:input-message location
(_ "argument endSpanners is not an EventChord: ~a" music
))))
281 #(define-music-function
(parser location factor argument
) (ly
:moment? ly
:music?
)
282 (_i
"Adjust durations of music in @var{argument} by rational @var{factor}. ")
284 ((orig-duration
(ly
:music-length argument
))
285 (multiplier
(ly
:make-moment
1 1)))
289 (if
(and
(eq?
(ly
:music-property mus
'name
) 'EventChord
)
290 (< 0 (ly
:moment-main-denominator
(ly
:music-length mus
))))
292 (ly
:music-compress mus multiplier
)
293 (set
! multiplier
(ly
:moment-mul factor multiplier
)))
300 (ly
:moment-div orig-duration
(ly
:music-length argument
)))
307 #(def-grace-function startGraceMusic stopGraceMusic
308 (_i
"Insert @var{music} as grace notes."))
313 #(define-music-function
314 (parser location name
) (string?
)
315 (_i
"Switch instrument to @var{name}, which must be predefined with
316 @code{\\addInstrumentDefinition}.")
318 ((handle
(assoc name instrument-definitions
))
319 (instrument-def
(if handle
(cdr handle
) '()))
323 (ly
:input-message location
"No such instrument: ~a" name
))
325 (make-music
'SimultaneousMusic
337 #(define-music-function
338 (parser location tag music
) (symbol? ly
:music?
)
339 (_i
"Include only elements of @var{music} that are tagged with @var{tag}.")
342 (let
* ((tags
(ly
:music-property m
'tags
))
343 (res
(memq tag tags
)))
350 #(define-music-function
351 (parser location music
)
353 (_i
"Remove cue notes from @var{music}.")
356 (if
(and
(string?
(ly
:music-property mus
'quoted-music-name
))
357 (string
=?
(ly
:music-property mus
'quoted-context-id
"") "cue"))
358 (ly
:music-property mus
'element
)
364 #(define-music-function
(parser location label
) (symbol?
)
365 (_i
"Create @var{label} as a bookmarking label")
366 (make-music
'EventChord
369 'elements
(list
(make-music
'LabelEvent
370 'page-label label
))))
375 #(define-music-function
376 (parser location arg
) (ly
:music?
)
377 (_i
"Display chords in @var{arg} as clusters")
378 (music-map note-to-cluster arg
))
381 #(define-music-function
(parser location proc mus
) (procedure? ly
:music?
)
382 (music-map proc mus
))
386 %% noPageBreak and noPageTurn are music functions (not music indentifiers),
387 %% because music identifiers are not allowed at top-level.
389 #(define-music-function
(location parser
) ()
390 (_i
"Forbid a page break. May be used at toplevel (ie between scores or
391 markups), or inside a score.")
392 (make-music
'EventChord
394 'page-break-permission
'forbid
395 'elements
(list
(make-music
'PageBreakEvent
396 'break-permission
'()))))
399 #(define-music-function
(location parser
) ()
400 (_i
"Forbid a page turn. May be used at toplevel (ie between scores or
401 markups), or inside a score.")
402 (make-music
'EventChord
404 'page-turn-permission
'forbid
405 'elements
(list
(make-music
'PageTurnEvent
406 'break-permission
'()))))
411 #(define-music-function
(parser location pitch-note
) (ly
:music?
)
414 (make-music
'RelativeOctaveCheck
416 'pitch
(pitch-of-note pitch-note
)
419 ottava
= #(define-music-function
(parser location octave
) (number?
)
420 (_i
"set the octavation ")
421 (make-ottava-set octave
))
423 overrideBeamSettings
=
424 #(define-music-function
426 context time-signature rule-type grouping-rule
)
427 (symbol? pair? symbol? pair?
)
429 (_i
"Override beamSettings in @var{context}
430 for time signatures of @var{time-signature} and rules of type
431 @var{rule-type} to have a grouping rule alist
433 @var{rule-type} can be @code{end} or @code{subdivide},
434 with a potential future value of @code{begin}.
435 @var{grouping-rule} is an alist of @var{(beam-type . grouping)}
436 entries. @var{grouping} is in units of @var{beam-type}. If
437 @var{beam-type} is @code{*}, grouping is in units of the denominator
438 of @var{time-signature}.")
440 ;; TODO -- add warning if largest value of grouping is
441 ;; greater than time-signature
.
444 #(override-beam-setting
445 $time-signature $rule-type $grouping-rule $context
)
449 #(define-music-function
(parser location name property value
)
450 (string? symbol? scheme?
)
452 (_i
"Set @var{property} to @var{value} in all grobs named @var{name}.
453 The @var{name} argument is a string of the form @code{\"Context.GrobName\"}
454 or @code{\"GrobName\"}")
457 ((name-components
(string-split name
#\
.))
458 (context-name
'Bottom
)
461 (if
(> 2 (length name-components
))
462 (set
! grob-name
(string-
>symbol
(car name-components
)))
464 (set
! grob-name
(string-
>symbol
(list-ref name-components
1)))
465 (set
! context-name
(string-
>symbol
(list-ref name-components
0)))))
467 (make-music
'ApplyOutputEvent
469 'context-type context-name
471 (lambda
(grob orig-context context
)
473 (cdr
(assoc
'name
(ly
:grob-property grob
'meta
)))
475 (set
! (ly
:grob-property grob property
) value
))))))
479 %% pageBreak and pageTurn are music functions (iso music indentifiers),
480 %% because music identifiers are not allowed at top-level.
482 #(define-music-function
(location parser
) ()
483 (_i
"Force a page break. May be used at toplevel (i.e. between scores or
484 markups), or inside a score.")
485 (make-music
'EventChord
487 'line-break-permission
'force
488 'page-break-permission
'force
489 'elements
(list
(make-music
'LineBreakEvent
490 'break-permission
'force
)
491 (make-music
'PageBreakEvent
492 'break-permission
'force
))))
495 #(define-music-function
(location parser
) ()
496 (_i
"Force a page turn between two scores or top-level markups.")
497 (make-music
'EventChord
499 'line-break-permission
'force
500 'page-break-permission
'force
501 'page-turn-permission
'force
502 'elements
(list
(make-music
'LineBreakEvent
503 'break-permission
'force
)
504 (make-music
'PageBreakEvent
505 'break-permission
'force
)
506 (make-music
'PageTurnEvent
507 'break-permission
'force
))))
510 #(define-music-function
(parser location voice-ids music
) (list? ly
:music?
)
511 (_i
"Define parallel music sequences, separated by '|' (bar check signs),
512 and assign them to the identifiers provided in @var{voice-ids}.
514 @var{voice-ids}: a list of music identifiers (symbols containing only letters)
516 @var{music}: a music sequence, containing BarChecks as limiting expressions.
521 \\parallelMusic #'(A B C) {
531 (let
* ((voices
(apply circular-list
(make-list
(length voice-ids
) (list
))))
532 (current-voices voices
)
533 (current-sequence
(list
)))
536 (define
(push-music m
)
537 "Push the music expression into the current sequence"
538 (set
! current-sequence
(cons m current-sequence
)))
539 (define
(change-voice
)
540 "Stores the previously built sequence into the current voice and
541 change to the following voice."
542 (list-set
! current-voices
0 (cons
(make-music
'SequentialMusic
543 'elements
(reverse
! current-sequence
))
544 (car current-voices
)))
545 (set
! current-sequence
(list
))
546 (set
! current-voices
(cdr current-voices
)))
547 (define
(bar-check? m
)
548 "Checks whether m is a bar check."
549 (eq?
(ly
:music-property m
'name
) 'BarCheck
))
550 (define
(music-origin music
)
551 "Recursively search an origin location stored in music."
552 (cond
((null? music
) #f)
553 ((not
(null?
(ly
:music-property music
'origin
)))
554 (ly
:music-property music
'origin
))
555 (else
(or
(music-origin
(ly
:music-property music
'element
))
556 (let
((origins
(remove not
(map music-origin
557 (ly
:music-property music
'elements
)))))
558 (and
(not
(null? origins
)) (car origins
)))))))
560 ;; first
, split the music and fill in voices
561 (map-in-order
(lambda
(m
)
563 (if
(bar-check? m
) (change-voice
)))
564 (ly
:music-property music
'elements
))
565 (if
(not
(null? current-sequence
)) (change-voice
))
566 ;; un-circularize `voices
' and reorder the voices
567 (set
! voices
(map-in-order
(lambda
(dummy seqs
)
571 ;; set origin location of each sequence in each voice
572 ;; for better type error tracking
573 (for-each
(lambda
(voice
)
574 (for-each
(lambda
(seq
)
575 (set
! (ly
:music-property seq
'origin
)
576 (or
(music-origin seq
) location
)))
580 ;; check sequence length
581 (apply for-each
(lambda
* (#:rest seqs
)
582 (let
((moment-reference
(ly
:music-length
(car seqs
))))
583 (for-each
(lambda
(seq moment
)
584 (if
(not
(equal? moment moment-reference
))
585 (ly
:music-message seq
586 "Bars in parallel music don't have the same length")))
587 seqs
(map-in-order ly
:music-length seqs
))))
590 ;; bind voice identifiers to the voices
591 (map
(lambda
(voice-id voice
)
592 (ly
:parser-define
! parser voice-id
593 (make-music
'SequentialMusic
597 ;; Return an empty sequence
. this function is actually
a "void" function
.
598 (make-music
'SequentialMusic
'void
#t
))
601 #(define-music-function
(parser loc arg
) (ly
:music?
)
602 (_i
"Tag @var{arg} to be parenthesized.")
604 (if
(memq
'event-chord
(ly
:music-property arg
'types
))
605 ; arg is an EventChord -
> set the parenthesize property on all child notes and rests
608 (if
(or
(memq
'note-event
(ly
:music-property ev
'types
))
609 (memq
'rest-event
(ly
:music-property ev
'types
)))
610 (set
! (ly
:music-property ev
'parenthesize
) #t
)))
611 (ly
:music-property arg
'elements
))
612 ; No chord
, simply set property for this expression
:
613 (set
! (ly
:music-property arg
'parenthesize
) #t
))
617 #(define-music-function
(parser location part
1 part
2) (ly
:music? ly
:music?
)
618 (_i
"Take the music in @var{part1} and @var{part2} and typeset so that they share a staff.")
619 (make-part-combine-music parser
623 #(define-music-function
624 (parser location main-note secondary-note
)
625 (ly
:music? ly
:music?
)
626 (_i
"Print a trill with @var{main-note} as the main note of the trill and
627 print @var{secondary-note} as a stemless note head in parentheses.")
628 (let
* ((get-notes
(lambda
(ev-chord
)
630 (lambda
(m
) (eq?
'NoteEvent
(ly
:music-property m
'name
)))
631 (ly
:music-property ev-chord
'elements
))))
632 (sec-note-events
(get-notes secondary-note
))
633 (trill-events
(filter
(lambda
(m
) (music-has-type m
'trill-span-event
))
634 (ly
:music-property main-note
'elements
))))
636 (if
(pair? sec-note-events
)
638 (let
* ((trill-pitch
(ly
:music-property
(car sec-note-events
) 'pitch
))
639 (forced
(ly
:music-property
(car sec-note-events
) 'force-accidental
)))
641 (if
(ly
:pitch? trill-pitch
)
642 (for-each
(lambda
(m
)
643 (ly
:music-set-property
! m
'pitch trill-pitch
)) trill-events
)
645 (ly
:warning
(_ "Second argument of \\pitchedTrill should be single note: "))
646 (display sec-note-events
)))
649 (for-each
(lambda
(m
)
650 (ly
:music-set-property
! m
'force-accidental forced
))
655 #(define-music-function
656 (parser location what main-music
)
658 (_i
"Indicate a section of music to be quoted. @var{what} indicates the name
659 of the quoted voice, as specified in an @code{\\addQuote} command.
660 @var{main-music} is used to indicate the length of music to be quoted;
661 usually contains spacers or multi-measure rests.")
662 (make-music
'QuoteMusic
664 'quoted-music-name what
668 #(define-music-function
669 (parser location tag music
) (symbol? ly
:music?
)
670 (_i
"Remove elements of @var{music} that are tagged with @var{tag}.")
673 (let
* ((tags
(ly
:music-property m
'tags
))
674 (res
(memq tag tags
)))
678 resetRelativeOctave
=
679 #(define-music-function
680 (parser location reference-note
)
682 (_i
"Set the octave inside a \\relative section.")
685 ((notes
(ly
:music-property reference-note
'elements
))
686 (pitch
(ly
:music-property
(car notes
) 'pitch
)))
688 (set
! (ly
:music-property reference-note
'elements
) '())
689 (set
! (ly
:music-property reference-note
690 'to-relative-callback
)
691 (lambda
(music last-pitch
)
697 #(define-music-function
699 context time-signature rule-type
)
700 (symbol? pair? symbol?
)
702 (_i
"Revert beam settings in @var{context} for time signatures of
703 @var{time-signature} and groups of type
704 @var{group-type}. @var{group-type} can be @code{end}
705 or @code{subdivide}.")
707 #(revert-beam-setting $time-signature $rule-type $context
)
711 #(define-music-function
(parser location finger
) (number-or-string?
)
712 (_i
"Apply @var{finger} as a fingering indication.")
721 (list
'digit finger
)))))
726 #(define-music-function
(parser location fraction music
) (number-pair? ly
:music?
)
727 (_i
"Multiply the duration of events in @var{music} by @var{fraction}.")
728 (ly
:music-compress music
729 (ly
:make-moment
(car fraction
) (cdr fraction
))))
732 #(define-music-function
(parser location grouping
) (pair?
)
733 (_i
"Set the beat grouping in the current time signature to
735 (define
(default-group-setting
c)
736 (let
* ((context-time-signature
737 (ly
:context-property
c 'timeSignatureFraction
))
738 (time-signature
(if
(null? context-time-signature
)
740 context-time-signature
)))
741 (override-property-setting
744 (list time-signature
'end
)
745 (list
(cons
'* grouping
)))))
748 (make-apply-context default-group-setting
)
752 #(define-music-function
(parser location dur dots arg
) (integer? integer? ly
:music?
)
753 (_i
"Scale @var{arg} up by a factor of @var{2^dur*(2-(1/2)^dots)}.")
757 (shift-one-duration-log x dur dots
)) arg
))
760 #(define-music-function
(parser location parameters
) (list?
)
761 (_i
"Set the system stretch, by reading the 'system-stretch property of
762 the `parameters' assoc list.")
764 \overrideProperty #"Score.NonMusicalPaperColumn"
765 #'line-break-system-details
766 #$
(list
(cons
'alignment-extra-space
(cdr
(assoc
'system-stretch parameters
)))
767 (cons
'system-Y-extent
(cdr
(assoc
'system-Y-extent parameters
))))
771 #(define-music-function
772 (parser location style heads music
)
773 (symbol? list-or-symbol? ly
:music?
)
774 (_i
"Set @var{heads} in @var{music} to @var{style}.")
775 (style-note-heads heads style music
))
780 #(define-music-function
(parser location tag arg
)
783 (_i
"Add @var{tag} to the @code{tags} property of @var{arg}.")
786 (ly
:music-property arg
'tags
)
788 (ly
:music-property arg
'tags
)))
791 transposedCueDuring
=
792 #(define-music-function
793 (parser location what dir pitch-note main-music
)
794 (string? ly
:dir? ly
:music? ly
:music?
)
796 (_i
"Insert notes from the part @var{what} into a voice called @code{cue},
797 using the transposition defined by @var{pitch-note}. This happens
798 simultaneously with @var{main-music}, which is usually a rest. The
799 argument @var{dir} determines whether the cue notes should be notated
800 as a first or second voice.")
802 (make-music
'QuoteMusic
804 'quoted-context-type
'Voice
805 'quoted-context-id
"cue"
806 'quoted-music-name what
807 'quoted-voice-direction dir
808 'quoted-transposition
(pitch-of-note pitch-note
)
812 #(define-music-function
(parser location pitch-note
) (ly
:music?
)
813 (_i
"Set instrument transposition")
816 (make-property-set
'instrumentTransposition
817 (ly
:pitch-negate
(pitch-of-note pitch-note
)))
821 #(define-music-function
(parser location sym val arg
)
822 (symbol? scheme? ly
:music?
)
823 (_i
"Add @code{sym . val} to the @code{tweaks} property of @var{arg}.")
825 (if
(equal?
(object-property sym
'backend-type?
) #f)
827 (ly
:warning
(_ "cannot find property type-check for ~a") sym
)
828 (ly
:warning
(_ "doing assignment anyway"))))
830 (ly
:music-property arg
'tweaks
)
832 (ly
:music-property arg
'tweaks
)))
838 #(define-music-function
(parser location music
) (ly
:music?
)
839 (_i
"Force any @code{\\repeat volta}, @code{\\repeat tremolo} or
840 @code{\\repeat percent} commands in @var{music} to be interpreted
841 as @code{\\repeat unfold}.")
842 (unfold-repeats music
))
847 #(define-music-function
(parser location sym val music
) (symbol? scheme? ly
:music?
)
848 (_i
"Set @var{sym} to @var{val} in @var{music}.")
850 (set
! (ly
:music-property music sym
) val
)