Re: Conflicting RehearsalMarks

[David Kastrup]

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