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Re: Full bar rest printed incorrectly after time signature change

From: Kevin Barry
Subject: Re: Full bar rest printed incorrectly after time signature change
Date: Fri, 28 Oct 2022 15:29:33 +0000

On Fri, Oct 28, 2022 at 03:15:48PM +0000, Ole V. Villumsen wrote:
> > If you use \partial at the beginning of a score it treats the resulting
> > duration as the length of music preceding the first bar. This is how bar
> > numbering generally works for upbeats/anacrusis.
> Obviously confirmed.

I mean that it is documented behaviour. The NR says "When \partial is
used at the beginning of a score, duration is the length of the music
preceding the first bar."

> I admit that I wondered more than a bit about the requirement in the
> Notation Reference to insert a \partial "when the time signature
> changes in mid measure". Composers do not always want an
> upbeat/fractional pick-up there. Maybe supplying a zero duration is a
> hack; but what is the alternative? At least NR doesn’t give one.

It used to be the case that you had to use a different (more
complicated) syntax to do that, but since the functionality was quite
similar to partial, partial was updated to work when used at times other
than the beginning of a piece.

> > All of the examples of \partial in the documentation use it at the
> > beginning of a bar and supply the duration. If you do the same it should
> > work for you.
> I didn’t see any examples of a zero partial in the docs either. I have
> trouble making good sense of your last statement, though, sorry. What
> are you suggesting to do when the composer did not intend nor supply
> an upbeat? (My example is from C.Ph.E. Bach (1714 - 88): Fantasia C
> major H.291, bars 71 - 72.)

Partial only inserts an upbeat when used at the beginning of a score. To
quote the NR: "When \partial is used after the beginning of a score,
duration is the remaining length of the current measure. It does not
create a new numbered bar."

You should imitate the examples in the NR: put \partial 2 at the
beginning of the shortened measure. Something like this (based on the
image you attached):

\relative {
  \time 3/4
  g'8( fis e' d c b)
  \partial 2
  a4( gis)
  \bar "||"
  \tempo "Presto di molto"
  \time 2/4


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