Make arguments like Context.GrobName accessible as symbol lists

ly/property-init.ly

 % property-init.ly
 
-\version "2.17.5"
+\version "2.17.6"
 
 %% for dashed slurs, phrasing slurs, and ties
 #(define (make-simple-dash-definition dash-fraction dash-period)
     (list (list 0 1 dash-fraction dash-period)))
 
 %% common definition for all note head styles reverting
 %% (palm mute, harmonics, dead notes, ...)
 defaultNoteHeads =
 #(define-music-function (parser location) ()
    (_i "Revert to the default note head style.")
@@ skipping 17 matching lines @@
 
 %% arpeggios
 
 % For drawing vertical chord brackets with \arpeggio
 % This is a shorthand for the value of the print-function property
 % of either Staff.Arpeggio or PianoStaff.Arpeggio, depending whether
 % cross-staff brackets are desired.
 
 arpeggio = #(make-music 'ArpeggioEvent)
 arpeggioArrowUp = {
-  \revert Arpeggio  stencil
-  \revert Arpeggio X-extent
-  \override Arpeggio  arpeggio-direction = #UP
+  \revert Arpeggio.stencil
+  \revert Arpeggio.X-extent
+  \override Arpeggio.arpeggio-direction = #UP
 }
 arpeggioArrowDown = {
-  \revert Arpeggio stencil
-  \revert Arpeggio X-extent
-  \override Arpeggio  arpeggio-direction = #DOWN
+  \revert Arpeggio.stencil
+  \revert Arpeggio.X-extent
+  \override Arpeggio.arpeggio-direction = #DOWN
 }
 arpeggioNormal = {
-  \revert Arpeggio stencil
-  \revert Arpeggio X-extent
-  \revert Arpeggio arpeggio-direction
-  \revert Arpeggio dash-definition
+  \revert Arpeggio.stencil
+  \revert Arpeggio.X-extent
+  \revert Arpeggio.arpeggio-direction
+  \revert Arpeggio.dash-definition
 }
 arpeggioBracket = {
-  \revert Arpeggio X-extent
-  \override Arpeggio stencil = #ly:arpeggio::brew-chord-bracket
+  \revert Arpeggio.X-extent
+  \override Arpeggio.stencil = #ly:arpeggio::brew-chord-bracket
 }
 arpeggioParenthesis = {
-  \override Arpeggio stencil = #ly:arpeggio::brew-chord-slur
-  \override Arpeggio X-extent = #ly:grob::stencil-width
-  \revert Arpeggio dash-definition
+  \override Arpeggio.stencil = #ly:arpeggio::brew-chord-slur
+  \override Arpeggio.X-extent = #ly:grob::stencil-width
+  \revert Arpeggio.dash-definition
 }
 arpeggioParenthesisDashed = {
-  \override Arpeggio stencil = #ly:arpeggio::brew-chord-slur
-  \override Arpeggio X-extent = #ly:grob::stencil-width
-  \override Arpeggio dash-definition = #'((0 1 0.4 0.75))
+  \override Arpeggio.stencil = #ly:arpeggio::brew-chord-slur
+  \override Arpeggio.X-extent = #ly:grob::stencil-width
+  \override Arpeggio.dash-definition = #'((0 1 0.4 0.75))
 }
 
 
 %% auto beaming
 
 autoBeamOn  = \set autoBeaming = ##t
 autoBeamOff = \set autoBeaming = ##f
 
 
 %% balloon length
 
 balloonLengthOn = {
-  \override BalloonTextItem extra-spacing-width = #'(0 . 0)
-  \override BalloonTextItem extra-spacing-height = #'(-inf.0 . +inf.0)
+  \override BalloonTextItem.extra-spacing-width = #'(0 . 0)
+  \override BalloonTextItem.extra-spacing-height = #'(-inf.0 . +inf.0)
 }
 balloonLengthOff = {
-  \override BalloonTextItem extra-spacing-width = #'(+inf.0 . -inf.0)
-  \override BalloonTextItem extra-spacing-height = #'(0 . 0)
-}
+  \override BalloonTextItem.extra-spacing-width = #'(+inf.0 . -inf.0)
+  \override BalloonTextItem.extra-spacing-height = #'(0 . 0)
+}
+
+
+%% bar lines
+
+defineBarLine =
+#(define-void-function
+   (parser location bar glyph-list) (string? list?)
+   (_i "Define bar line settings for bar line @var{bar}.
+     The list @var{glyph-list} must have three entries which define
+     the appearance at the end of line, at the beginning of the next line,
+     and the span bar, respectively." )
+  (if (not (= (length glyph-list) 3))
+      (ly:error (_ "Argument list for bar '~a' must have three components.") bar)
+      (define-bar-line bar
+                       (car glyph-list)
+                       (cadr glyph-list)
+                       (caddr glyph-list))))
 
 
 %% bass figures
 
 bassFigureExtendersOn = {
   \set useBassFigureExtenders = ##t
   \set Staff.useBassFigureExtenders = ##t
 }
 bassFigureExtendersOff = {
   \set useBassFigureExtenders = ##f
   \set Staff.useBassFigureExtenders = ##f
 }
 bassFigureStaffAlignmentDown =
-  \override Staff.BassFigureAlignmentPositioning direction = #DOWN
+  \override Staff.BassFigureAlignmentPositioning.direction = #DOWN
 bassFigureStaffAlignmentUp =
-  \override Staff.BassFigureAlignmentPositioning direction = #UP
+  \override Staff.BassFigureAlignmentPositioning.direction = #UP
 bassFigureStaffAlignmentNeutral =
-  \revert Staff.BassFigureAlignmentPositioning direction
+  \revert Staff.BassFigureAlignmentPositioning.direction
 
 
 %% cadenzas
 
 cadenzaOn  = {
   \set Timing.timing = ##f
   \set Timing.autoBeaming = ##f
 }
 
 cadenzaOff = {
@@ skipping 27 matching lines @@
 
 
 %% compressFullBarRests
 
 compressFullBarRests = \set Score.skipBars = ##t
 expandFullBarRests   = \set Score.skipBars = ##f
 
 
 %% dots
 
-dotsUp      = \override Dots direction = #UP
-dotsDown    = \override Dots direction = #DOWN
-dotsNeutral = \revert Dots direction
+dotsUp      = \override Dots.direction = #UP
+dotsDown    = \override Dots.direction = #DOWN
+dotsNeutral = \revert Dots.direction
 
 
 %% dynamics
 
 dynamicUp = {
-  \override DynamicText direction = #UP
-  \override DynamicLineSpanner direction = #UP
+  \override DynamicText.direction = #UP
+  \override DynamicLineSpanner.direction = #UP
 }
 dynamicDown = {
-  \override DynamicText direction = #DOWN
-  \override DynamicLineSpanner direction = #DOWN
+  \override DynamicText.direction = #DOWN
+  \override DynamicLineSpanner.direction = #DOWN
 }
 dynamicNeutral = {
-  \revert DynamicText direction
-  \revert DynamicLineSpanner direction
+  \revert DynamicText.direction
+  \revert DynamicLineSpanner.direction
 }
 
 
 %% easy heads
 
 easyHeadsOn = {
-  \override NoteHead stencil = #note-head::brew-ez-stencil
-  \override NoteHead font-size = #-8
-  \override NoteHead font-family = #'sans
-  \override NoteHead font-series = #'bold
+  \override NoteHead.stencil = #note-head::brew-ez-stencil
+  \override NoteHead.font-size = #-8
+  \override NoteHead.font-family = #'sans
+  \override NoteHead.font-series = #'bold
 }
 easyHeadsOff = {
-  \revert NoteHead stencil
-  \revert NoteHead font-size
-  \revert NoteHead font-family
-  \revert NoteHead font-series
+  \revert NoteHead.stencil
+  \revert NoteHead.font-size
+  \revert NoteHead.font-family
+  \revert NoteHead.font-series
 }
 
 
 %% endincipit
 
 %% End the incipit and print a ``normal line start''.
 endincipit = \context Staff {
   \partial 16 s16  % Hack to handle e.g. \bar ".|" \endincipit
-  \once \override Staff.Clef full-size-change = ##t
-  \once \override Staff.Clef non-default = ##t
+  \once \override Staff.Clef.full-size-change = ##t
+  \once \override Staff.Clef.non-default = ##t
   \bar ""
 }
 
 
 %% fermata markup
 
 fermataMarkup =
 #(make-music 'MultiMeasureTextEvent
              'tweaks (list
                       ;; Set the 'text based on the 'direction
@@ skipping 29 matching lines @@
 harmonicNote =
 #(define-music-function (parser location note) (ly:music?)
    (_i "Print @var{note} with a diamond-shaped note head.")
    (style-note-heads 'NoteHead 'harmonic note))
 
 
 %% hideNotes
 
 hideNotes = {
   % hide notes, accidentals, etc.
-  \override Dots transparent = ##t
-  \override NoteHead transparent = ##t
-  \override NoteHead no-ledgers = ##t
-  \override Stem transparent = ##t
-  \override Flag transparent = ##t
-  \override Beam transparent = ##t
-  \override Accidental transparent = ##t
-  \override Rest transparent = ##t
-  \override TabNoteHead transparent = ##t
+  \override Dots.transparent = ##t
+  \override NoteHead.transparent = ##t
+  \override NoteHead.no-ledgers = ##t
+  \override Stem.transparent = ##t
+  \override Flag.transparent = ##t
+  \override Beam.transparent = ##t
+  \override Accidental.transparent = ##t
+  \override Rest.transparent = ##t
+  \override TabNoteHead.transparent = ##t
 }
 unHideNotes = {
-  \revert Accidental transparent
-  \revert Beam transparent
-  \revert Stem transparent
-  \revert Flag transparent
-  \revert NoteHead transparent
-  \revert NoteHead no-ledgers
-  \revert Dots transparent
-  \revert Rest transparent
-  \revert TabNoteHead transparent
+  \revert Accidental.transparent
+  \revert Beam.transparent
+  \revert Stem.transparent
+  \revert Flag.transparent
+  \revert NoteHead.transparent
+  \revert NoteHead.no-ledgers
+  \revert Dots.transparent
+  \revert Rest.transparent
+  \revert TabNoteHead.transparent
 }
 
 
 %% improvisation
 
 improvisationOn = {
   \set squashedPosition = #0
-  \override NoteHead style = #'slash
-  \override Accidental stencil = ##f
-  \override AccidentalCautionary stencil = ##f
+  \override NoteHead.style = #'slash
+  \override Accidental.stencil = ##f
+  \override AccidentalCautionary.stencil = ##f
 }
 improvisationOff = {
   \unset squashedPosition
-  \revert NoteHead style
-  \revert Accidental stencil
-  \revert AccidentalCautionary stencil
+  \revert NoteHead.style
+  \revert Accidental.stencil
+  \revert AccidentalCautionary.stencil
 }
 
 
 %% merging
 
 mergeDifferentlyDottedOn =
-  \override Staff.NoteCollision merge-differently-dotted = ##t
+  \override Staff.NoteCollision.merge-differently-dotted = ##t
 mergeDifferentlyDottedOff =
-  \revert Staff.NoteCollision merge-differently-dotted
+  \revert Staff.NoteCollision.merge-differently-dotted
 mergeDifferentlyHeadedOn =
-  \override Staff.NoteCollision merge-differently-headed = ##t
+  \override Staff.NoteCollision.merge-differently-headed = ##t
 mergeDifferentlyHeadedOff =
-  \revert Staff.NoteCollision merge-differently-headed
+  \revert Staff.NoteCollision.merge-differently-headed
 
 
 %% numeric time signature
 
-numericTimeSignature = \override Staff.TimeSignature style = #'numbered
-defaultTimeSignature = \revert Staff.TimeSignature style
+numericTimeSignature = \override Staff.TimeSignature.style = #'numbered
+defaultTimeSignature = \revert Staff.TimeSignature.style
 
 
 %% palm mutes
 
 palmMuteOn =
 #(define-music-function (parser location) ()
    (_i "Set the default note head style to a triangle-shaped style.")
    (override-head-style 'NoteHead 'do))
 palmMuteOff = \defaultNoteHeads
 palmMute =
 #(define-music-function (parser location note) (ly:music?)
    (_i "Print @var{note} with a triangle-shaped note head.")
    (style-note-heads 'NoteHead 'do note))
 
 
 %% phrasing slurs
 
 % directions
-phrasingSlurUp      = \override PhrasingSlur direction = #UP
-phrasingSlurDown    = \override PhrasingSlur direction = #DOWN
-phrasingSlurNeutral = \revert PhrasingSlur direction
+phrasingSlurUp      = \override PhrasingSlur.direction = #UP
+phrasingSlurDown    = \override PhrasingSlur.direction = #DOWN
+phrasingSlurNeutral = \revert PhrasingSlur.direction
 
 % dash-patterns (make-simple-dash-definition defined at top of file)
 phrasingSlurDashPattern =
 #(define-music-function (parser location dash-fraction dash-period)
    (number? number?)
    (_i "Set up a custom style of dash pattern for @var{dash-fraction} ratio of
 line to space repeated at @var{dash-period} interval for phrasing slurs.")
   #{
-     \override PhrasingSlur dash-definition =
+     \override PhrasingSlur.dash-definition =
        $(make-simple-dash-definition dash-fraction dash-period)
   #})
 phrasingSlurDashed =
-  \override PhrasingSlur dash-definition = #'((0 1 0.4 0.75))
+  \override PhrasingSlur.dash-definition = #'((0 1 0.4 0.75))
 phrasingSlurDotted =
-  \override PhrasingSlur dash-definition = #'((0 1 0.1 0.75))
+  \override PhrasingSlur.dash-definition = #'((0 1 0.1 0.75))
 phrasingSlurHalfDashed =
-  \override PhrasingSlur dash-definition = #'((0 0.5 0.4 0.75)
+  \override PhrasingSlur.dash-definition = #'((0 0.5 0.4 0.75)
                                                 (0.5 1 1 1))
 phrasingSlurHalfSolid =
-  \override PhrasingSlur dash-definition = #'((0 0.5 1 1)
+  \override PhrasingSlur.dash-definition = #'((0 0.5 1 1)
                                                 (0.5 1 0.4 0.75))
 phrasingSlurSolid =
-  \revert PhrasingSlur dash-definition
+  \revert PhrasingSlur.dash-definition
 
 
 %% point and click
 
 pointAndClickOn  =
 #(define-music-function (parser location) ()
    (_i "Enable generation of code in final-format (e.g. pdf) files to reference the
 originating lilypond source statement;
 this is helpful when developing a score but generates bigger final-format files.")
    (ly:set-option 'point-and-click #t)
@@ skipping 34 matching lines @@
 southernHarmonyHeadsMinor =
   \set shapeNoteStyles = #'#(laThin miThin faThin sol laThin faThin sol)
 walkerHeads =
   \set shapeNoteStyles = #'#(doWalker reWalker miWalker faWalker solFunk laWalker tiWalker)
 walkerHeadsMinor =
   \set shapeNoteStyles = #'#(laWalker tiWalker doWalker reWalker miWalker faWalker solFunk)
 
 
 %% shifts
 
-shiftOn   = \override NoteColumn horizontal-shift = #1
-shiftOnn  = \override NoteColumn horizontal-shift = #2
-shiftOnnn = \override NoteColumn horizontal-shift = #3
-shiftOff  = \revert NoteColumn horizontal-shift
+shiftOn   = \override NoteColumn.horizontal-shift = #1
+shiftOnn  = \override NoteColumn.horizontal-shift = #2
+shiftOnnn = \override NoteColumn.horizontal-shift = #3
+shiftOff  = \revert NoteColumn.horizontal-shift
 
 
 %% slurs
 
 % directions
-slurUp         = \override Slur direction = #UP
-slurDown       = \override Slur direction = #DOWN
-slurNeutral    = \revert Slur direction
+slurUp         = \override Slur.direction = #UP
+slurDown       = \override Slur.direction = #DOWN
+slurNeutral    = \revert Slur.direction
 
 % dash-patterns (make-simple-dash-definition defined at top of file)
 slurDashPattern =
 #(define-music-function (parser location dash-fraction dash-period)
   (number? number?)
   (_i "Set up a custom style of dash pattern for @var{dash-fraction}
 ratio of line to space repeated at @var{dash-period} interval for slurs.")
   #{
-     \override Slur dash-definition =
+     \override Slur.dash-definition =
        $(make-simple-dash-definition dash-fraction dash-period)
   #})
-slurDashed     = \override Slur dash-definition = #'((0 1 0.4 0.75))
-slurDotted     = \override Slur dash-definition = #'((0 1 0.1 0.75))
-slurHalfDashed = \override Slur dash-definition = #'((0 0.5 0.4 0.75)
+slurDashed     = \override Slur.dash-definition = #'((0 1 0.4 0.75))
+slurDotted     = \override Slur.dash-definition = #'((0 1 0.1 0.75))
+slurHalfDashed = \override Slur.dash-definition = #'((0 0.5 0.4 0.75)
                                                        (0.5 1 1 1))
-slurHalfSolid  = \override Slur dash-definition = #'((0 0.5 1 1)
+slurHalfSolid  = \override Slur.dash-definition = #'((0 0.5 1 1)
                                                        (0.5 1 0.4 0.75))
-slurSolid      = \revert Slur dash-definition
+slurSolid      = \revert Slur.dash-definition
 
 
 %% staff switches
 
 showStaffSwitch = \set followVoice = ##t
 hideStaffSwitch = \set followVoice = ##f
 
 
 %% stems
 
-stemUp      = \override Stem direction = #UP
-stemDown    = \override Stem direction = #DOWN
-stemNeutral = \revert Stem direction
+stemUp      = \override Stem.direction = #UP
+stemDown    = \override Stem.direction = #DOWN
+stemNeutral = \revert Stem.direction
 
 
 %% tablature
 
 % switch to full notation
 tabFullNotation = {
   % time signature
-  \revert TabStaff.TimeSignature stencil
+  \revert TabStaff.TimeSignature.stencil
   % stems (the half note gets a double stem)
-  \revert TabVoice.Stem length
-  \revert TabVoice.Stem no-stem-extend
-  \revert TabVoice.Flag style
-  \revert TabVoice.Stem details
-  \revert TabVoice.Stem stencil
-  \revert TabVoice.Flag stencil
-  \override TabVoice.Stem stencil = #tabvoice::draw-double-stem-for-half-notes
-  \override TabVoice.Stem X-extent = #tabvoice::make-double-stem-width-for-half-notes
+  \revert TabVoice.Stem.length
+  \revert TabVoice.Stem.no-stem-extend
+  \revert TabVoice.Flag.style
+  \revert TabVoice.Stem.details
+  \revert TabVoice.Stem.stencil
+  \revert TabVoice.Flag.stencil
+  \override TabVoice.Stem.stencil = #tabvoice::draw-double-stem-for-half-notes
+  \override TabVoice.Stem.X-extent = #tabvoice::make-double-stem-width-for-half-notes
   \set TabVoice.autoBeaming = ##t
-  \revert TabVoice.NoteColumn ignore-collision
+  \revert TabVoice.NoteColumn.ignore-collision
   % beams, dots
-  \revert TabVoice.Beam stencil
-  \revert TabVoice.StemTremolo stencil
-  \revert TabVoice.Dots stencil
-  \revert TabVoice.Tie stencil
-  \revert TabVoice.Tie after-line-breaking
-  \revert TabVoice.RepeatTie stencil
-  \revert TabVoice.RepeatTie after-line-breaking
-  \revert TabVoice.LaissezVibrerTie stencil
-  \revert TabVoice.Slur stencil
-  \revert TabVoice.PhrasingSlur stencil
+  \revert TabVoice.Beam.stencil
+  \revert TabVoice.StemTremolo.stencil
+  \revert TabVoice.Dots.stencil
+  \revert TabVoice.Tie.stencil
+  \revert TabVoice.Tie.after-line-breaking
+  \revert TabVoice.RepeatTie.stencil
+  \revert TabVoice.RepeatTie.after-line-breaking
+  \revert TabVoice.LaissezVibrerTie.stencil
+  \revert TabVoice.Slur.stencil
+  \revert TabVoice.PhrasingSlur.stencil
   % tuplet stuff
-  \revert TabVoice.TupletBracket stencil
-  \revert TabVoice.TupletNumber stencil
+  \revert TabVoice.TupletBracket.stencil
+  \revert TabVoice.TupletNumber.stencil
   % dynamic signs
-  \revert TabVoice.DynamicText stencil
-  \revert TabVoice.DynamicTextSpanner stencil
-  \revert TabVoice.DynamicTextSpanner stencil
-  \revert TabVoice.Hairpin stencil
+  \revert TabVoice.DynamicText.stencil
+  \revert TabVoice.DynamicTextSpanner.stencil
+  \revert TabVoice.DynamicTextSpanner.stencil
+  \revert TabVoice.Hairpin.stencil
   % rests
-  \revert TabVoice.Rest stencil
-  \revert TabVoice.MultiMeasureRest stencil
-  \revert TabVoice.MultiMeasureRestNumber stencil
-  \revert TabVoice.MultiMeasureRestText stencil
+  \revert TabVoice.Rest.stencil
+  \revert TabVoice.MultiMeasureRest.stencil
+  \revert TabVoice.MultiMeasureRestNumber.stencil
+  \revert TabVoice.MultiMeasureRestText.stencil
   % markups etc.
-  \revert TabVoice.Glissando stencil
-  \revert TabVoice.Script stencil
-  \revert TabVoice.TextScript stencil
-  \revert TabVoice.TextSpanner stencil
-  \revert TabStaff.Arpeggio stencil
-  \revert TabStaff.NoteColumn ignore-collision
+  \revert TabVoice.Glissando.stencil
+  \revert TabVoice.Script.stencil
+  \revert TabVoice.TextScript.stencil
+  \revert TabVoice.TextSpanner.stencil
+  \revert TabStaff.Arpeggio.stencil
+  \revert TabStaff.NoteColumn.ignore-collision
 }
 
 %tie/repeat tie behaviour
 hideSplitTiedTabNotes = {
-  \override TabVoice.TabNoteHead details.tied-properties.break-visibility = #all-invisible
-  \override TabVoice.TabNoteHead details.tied-properties.parenthesize = ##f
-  \override TabVoice.TabNoteHead details.repeat-tied-properties.note-head-visible = ##f
-  \override TabVoice.TabNoteHead details.repeat-tied-properties.parenthesize = ##f
+  \override TabVoice.TabNoteHead.details.tied-properties.break-visibility = #all-invisible
+  \override TabVoice.TabNoteHead.details.tied-properties.parenthesize = ##f
+  \override TabVoice.TabNoteHead.details.repeat-tied-properties.note-head-visible = ##f
+  \override TabVoice.TabNoteHead.details.repeat-tied-properties.parenthesize = ##f
 }
 
 showSplitTiedTabNotes = {
-  \override TabVoice.TabNoteHead details.tied-properties.break-visibility = #begin-of-line-visible
-  \override TabVoice.TabNoteHead details.tied-properties.parenthesize = ##t
-  \override TabVoice.TabNoteHead details.repeat-tied-properties.note-head-visible = ##t
-  \override TabVoice.TabNoteHead details.repeat-tied-properties.parenthesize = ##t
+  \override TabVoice.TabNoteHead.details.tied-properties.break-visibility = #begin-of-line-visible
+  \override TabVoice.TabNoteHead.details.tied-properties.parenthesize = ##t
+  \override TabVoice.TabNoteHead.details.repeat-tied-properties.note-head-visible = ##t
+  \override TabVoice.TabNoteHead.details.repeat-tied-properties.parenthesize = ##t
 }
 
 %% text length
 
 textLengthOn = {
-  \override TextScript extra-spacing-width = #'(0 . 0)
-  \override TextScript extra-spacing-height = #'(-inf.0 . +inf.0)
+  \override TextScript.extra-spacing-width = #'(0 . 0)
+  \override TextScript.extra-spacing-height = #'(-inf.0 . +inf.0)
 }
 textLengthOff = {
-  \override TextScript extra-spacing-width = #'(+inf.0 . -inf.0)
-  \override TextScript extra-spacing-height = #'(0 . 0)
+  \override TextScript.extra-spacing-width = #'(+inf.0 . -inf.0)
+  \override TextScript.extra-spacing-height = #'(0 . 0)
 }
 
 
 %% text spanners
 
-textSpannerUp      = \override TextSpanner direction = #UP
-textSpannerDown    = \override TextSpanner direction = #DOWN
-textSpannerNeutral = \revert TextSpanner direction
+textSpannerUp      = \override TextSpanner.direction = #UP
+textSpannerDown    = \override TextSpanner.direction = #DOWN
+textSpannerNeutral = \revert TextSpanner.direction
 
 
 %% ties
 
 % directions
-tieUp      = \override Tie direction = #UP
-tieDown    = \override Tie direction = #DOWN
-tieNeutral = \revert Tie direction
+tieUp      = \override Tie.direction = #UP
+tieDown    = \override Tie.direction = #DOWN
+tieNeutral = \revert Tie.direction
 
 % dash-patterns (make-simple-dash-definition defined at top of file)
 tieDashPattern =
 #(define-music-function (parser location dash-fraction dash-period)
   (number? number?)
   (_i "Set up a custom style of dash pattern for @var{dash-fraction}
 ratio of line to space repeated at @var{dash-period} interval for ties.")
   #{
-     \override Tie dash-definition =
+     \override Tie.dash-definition =
        $(make-simple-dash-definition dash-fraction dash-period)
   #})
-tieDashed     = \override Tie dash-definition = #'((0 1 0.4 0.75))
-tieDotted     = \override Tie dash-definition = #'((0 1 0.1 0.75))
-tieHalfDashed = \override Tie dash-definition = #'((0 0.5 0.4 0.75)
+tieDashed     = \override Tie.dash-definition = #'((0 1 0.4 0.75))
+tieDotted     = \override Tie.dash-definition = #'((0 1 0.1 0.75))
+tieHalfDashed = \override Tie.dash-definition = #'((0 0.5 0.4 0.75)
                                                      (0.5 1 1 1))
-tieHalfSolid  = \override Tie dash-definition = #'((0 0.5 1 1)
+tieHalfSolid  = \override Tie.dash-definition = #'((0 0.5 1 1)
                                                      (0.5 1 0.4 0.75))
-tieSolid      = \revert Tie dash-definition
+tieSolid      = \revert Tie.dash-definition
 
 
 %% tuplets
 
-tupletUp      = \override TupletBracket direction = #UP
-tupletDown    = \override TupletBracket direction = #DOWN
-tupletNeutral = \revert TupletBracket direction
+tupletUp      = \override TupletBracket.direction = #UP
+tupletDown    = \override TupletBracket.direction = #DOWN
+tupletNeutral = \revert TupletBracket.direction
 
 
 %% voice properties
 
 % dynamic ly:dir?  text script, articulation script ly:dir?
 voiceOne   = #(context-spec-music (make-voice-props-set 0)  'Voice)
 voiceTwo   = #(context-spec-music (make-voice-props-set 1)  'Voice)
 voiceThree = #(context-spec-music (make-voice-props-set 2)  'Voice)
 voiceFour  = #(context-spec-music (make-voice-props-set 3)  'Voice)
 oneVoice   = #(context-spec-music (make-voice-props-revert) 'Voice)
 
 
 %% voice styles
 
 voiceOneStyle = {
-  \override NoteHead style = #'diamond
-  \override NoteHead color = #red
-  \override Stem color = #red
-  \override Flag color = #red
-  \override Beam color = #red
+  \override NoteHead.style = #'diamond
+  \override NoteHead.color = #red
+  \override Stem.color = #red
+  \override Flag.color = #red
+  \override Beam.color = #red
 }
 voiceTwoStyle = {
-  \override NoteHead style = #'triangle
-  \override NoteHead color = #blue
-  \override Stem color = #blue
-  \override Flag color = #blue
-  \override Beam color = #blue
+  \override NoteHead.style = #'triangle
+  \override NoteHead.color = #blue
+  \override Stem.color = #blue
+  \override Flag.color = #blue
+  \override Beam.color = #blue
 }
 voiceThreeStyle = {
-  \override NoteHead style = #'xcircle
-  \override NoteHead color = #green
-  \override Stem color = #green
-  \override Flag color = #green
-  \override Beam color = #green
+  \override NoteHead.style = #'xcircle
+  \override NoteHead.color = #green
+  \override Stem.color = #green
+  \override Flag.color = #green
+  \override Beam.color = #green
 }
 voiceFourStyle = {
-  \override NoteHead style = #'cross
-  \override NoteHead color = #magenta
-  \override Stem color = #magenta
-  \override Flag color = #magenta
-  \override Beam color = #magenta
+  \override NoteHead.style = #'cross
+  \override NoteHead.color = #magenta
+  \override Stem.color = #magenta
+  \override Flag.color = #magenta
+  \override Beam.color = #magenta
 }
 voiceNeutralStyle = {
-  \revert NoteHead style
-  \revert NoteHead color
-  \revert Stem color
-  \revert Flag color
-  \revert Beam color
-}
-
+  \revert NoteHead.style
+  \revert NoteHead.color
+  \revert Stem.color
+  \revert Flag.color
+  \revert Beam.color
+}
+
+
+%% volta brackets
+
+allowVoltaHook =
+#(define-void-function (parser location bar) (string?)
+                       (allow-volta-hook bar))
 
 %% x notes
 
 xNotesOn =
 #(define-music-function (parser location) ()
    (_i "Set the default note head style to a cross-shaped style.")
    (override-head-style '(TabNoteHead NoteHead) 'cross))
 xNotesOff = \defaultNoteHeads
 xNote =
 #(define-music-function (parser location note) (ly:music?)
    (_i "Print @var{note} with a cross-shaped note head.")
    (style-note-heads '(TabNoteHead NoteHead) 'cross note))
 
 
 %% dead notes (these need to come after "x notes")
 
 % Define aliases of cross-head notes for specific purposes
 deadNotesOn  = \xNotesOn
 deadNotesOff = \xNotesOff
 deadNote     = #xNote