Re: Conflicting RehearsalMarks

[Thomas Morley]

Am Mo., 23. Mai 2022 um 14:59 Uhr schrieb David Kastrup <dak@gnu.org>:
>
> Thomas Morley <thomasmorley65@gmail.com> writes:
>
> > Hi,
> >
> > consider the code below
> >
> > \layout {
> >   \context {
> >     \StaffGroup
> >     \consists "Mark_engraver"
> >     \consists "Staff_collecting_engraver"
> >   }
> >   \context {
> >     \Score
> >     \remove "Mark_engraver"
> >     \remove "Staff_collecting_engraver"
> >   }
> > }
> >
> > <<
> >   \new StaffGroup << \new Staff { \mark "foo" R1 }  \new Staff { R1 } >>
> >   \new StaffGroup << \new Staff { \mark "bar" R1 }  \new Staff { R1 } >>
> >   \new StaffGroup << \new Staff { \mark "buzz" R1 } \new Staff { R1 } >>
> >>>
> >
> > working fine with 2.22., i.e. no warnings and three different
> > RehearsalMarks are printed.
> > With 2.23.9 I get warnings about conficting events (imho, there are no
> > conficts, the Mark_engraver is moved!) and only the first one, "foo"
> > is printed at every StaffGroup.
> >
> > How to fix?
>
> There is likely a relation to the Mark_tracking_translator, and the
> respective convert-ly rule decides that this cannot be resolved
> automatically and bombs out with
>
> python/convertrules.py:        stderr_write(_("If independent mark sequences 
> are desired, use multiple Mark_tracking_translators."))
>
> which is a bit disappointing for functionality that is rather commonly
> used.  I see no documentation apart from the Changes entry that would
> address this change in interface.  I think fixing at least the
> documentation situation would be critical before a stable release.
>
> --
> David Kastrup

Yep, and 
Documentation/snippets/vertical-aligned-staffgroups-without-connecting-systemstartbar.ly
prints wrongly now.
Deserves an entry in Documentation/snippets/new

Cheers,
  Harm