Re: Bug concerning acciaccatura and \time?

[Urs Liska]

This is a known issue and explained in the Notation Reference (see 
"Known issues and warnings" under "grace notes" on 
http://www.lilypond.org/doc/v2.15/Documentation/notation/special-rhythmic-concerns.html)
Basically you have to add invisible acciaccaturas of the same length in 
all staves (and also in possible Dynamics contexts).
This is not necessary with all acciaccaturas but only if you experience 
problems around special barlines (like \time changes or repeats).

HTH
Urs

Am 25.04.2012 19:48, schrieb Thomas Ruedas:
> Hi,
> please consider the code snippet below, which is part of a larger 
> piece. It compiles without errors on my machine, but the output is 
> incorrect in that it produces the time signature 1/4 twice in the 
> second bar, namely first correctly at the beginning of the bar but 
> also after the acciaccatura.
> I have similar passages which are typeset correctly, so I think it may 
> be a bug.
> Thomas
>
> \version "2.14.2"
>
> \paper {
>   #(set-paper-size "a4")
> }
>
> u = { \change Staff = "right" \stemDown }
> U = { \change Staff = "right" \stemUp }
> l = { \change Staff = "left" \stemUp }
>
> %%%%%%% 3rd movement
> scoreCGlobal = {
>   \key c \major
>   \numericTimeSignature
>   \time 2/4
> }
>
> scoreCFlute = \relative c'' {
> e4\mf ~ e16 fis,\( b c
> % bar 17
> \time 1/4 cis8. d16\)
> }
>
> scoreCRight = {
>   \scoreCGlobal
> << { \relative { c''16\! e,\(\< a ais b8. cis16\) } } \\
> { <d'' fis''>2 } >>
> % bar 17
> \time 1/4 << { f'''8 fis''\! } \\
> { <gis'' b''>4 } >>
> }
>
> scoreCLeft = {
>   \scoreCGlobal
> <c bes e'>2
> % bar 17
> \time 1/4 \clef treble \acciaccatura fis8 < fis fis' b' d''>4
> }
>
> scoreCFlutePart = \new Staff \with {
>   instrumentName = "Flöte"
>   midiInstrument = "flute"
> } \scoreCFlute
>
> scoreCPianoPart = \new PianoStaff \with {
>   instrumentName = "Klavier"
> } <<
>   \new Staff = "right" \with {
>     midiInstrument = "acoustic grand"
>   } \scoreCRight
>   \new Staff = "left" \with {
>     midiInstrument = "acoustic grand"
>   } { \clef bass \scoreCLeft }
> >>
>
> \score {
> <<
>     \scoreCFlutePart
>     \scoreCPianoPart
> >>
>   \layout { }
>   \midi {
>     \context {
>       \Score
>       tempoWholesPerMinute = #(ly:make-moment 48 4)
>     }
>   }
> }