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Re: accidentals after mid-measure break

From: David Kastrup
Subject: Re: accidentals after mid-measure break
Date: Sat, 04 Jan 2020 02:05:41 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

Malte Meyn <address@hidden> writes:

> Hi list,
> I think that accidentals should be repeated after a break in every
> case. LilyPond does this with tied notes over a bar line but not with
> tied or even separate notes within a measure:
> \version "2.21.0"
> \relative {
>   \partial 2 c'2 d e fis \bar "" \break
>   fis g1 fis2~ \bar "" \break
>   fis g1 fis~ \break
>   fis2 g g, \bar "|."
> }
> Do you agree that this is a bug?

We can agree all day long but LilyPond's accidental algorithm is way out
of its depth to deal correctly with line breaks.  Even at tied notes
over a barline, the next accidental may appear properly but without
impacting the following accidental as appropriate: there would be a
ripple effect that is way beyond the current implementation even right
at a barline, and doing that kind of ripple effect for mid-bar breaks
would be much harder still.


\fixed c'
  \key a \major
  c1~ \break
  c2 c2

David Kastrup

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