Re: warning: forced break was overridden by some other event, should you be using bar checks?

[Kenneth Wolcott]

Hi Jean;

  It is obvious that I still have a lot to learn about Lilypond.

  I'm very grateful for the work you all do in making Lilypond so
awesome, but also the support on this mailing list is superb!

Thanks so much for your patience with this newbie!

Ken

On Wed, Jan 12, 2022 at 3:00 PM Jean Abou Samra <jean@abou-samra.fr> wrote:
>
> Le 12/01/2022 à 23:49, Kenneth Wolcott a écrit :
> > HI Carl;
> >
> >    There are many pieces of music in the Baroque, Classic and Romantic
> > periods where the same block of music is repeated without an
> > alternative.
> >
> >    This particular example is a simplified version/arrangement of a Chopin 
> > Waltz.
> >
> >    The problem goes away when I disabled the forced line breaks, so I
> > do think that there is a problem here, although it is an annoyance,
> > not severe.
> >
> >    There is no problem with the bar checks after I disable the forced
> > line breaks.
>
>
> While bar checks are one frequent cause of inability
> to honor a break, there can be others. Carl already
> mentioned note extending their duration across the
> break. One other is an explicit beam or one of the
> other spanners that are unbreakable by default. So
> this won't work:
>
> \version "2.22.1"
>
> {
>    c'2.. 8[
>    \break
>    8] 2..
> }
>
>
> whereas this will:
>
> \version "2.22.1"
>
> {
>    \override Beam.breakable = ##t
>    c'2.. 8[
>    \break
>    8] 2..
> }
>
> The same happens with, e.g., glissandi. You can
> similarly issue \override Glissando.breakable = ##t
> (etc.). An example is here:
>
> http://lilypond.org/doc/v2.22/Documentation/notation/line-breaking
>
> There is no position information in the diagnostic
> just because it is a bit inconvenient to do internally,
> as there can be a number of reasons why a break
> is disabled, and the information will come from different
> sources depending on the cause. It might be possible,
> though. My own take, however, would be to make \break
> override all kinds of restrictions altogether and
> just do what the user requested explicitly.
>
> Best,
> Jean
>
>