Re: Change of RehearsalMark behaviour

[David Sumbler]

Hi Valentin

You're right.  Having read your latest a few times, I see that it is, indeed, not very complicated.  Thanks for the clarification.

David

On Tue, 2021-12-21 at 00:26 +0100, Valentin Petzel wrote:

Hello David,

It’s not very complicated: The old behaviour uses one Mark_engraver to handle 

mark events and place marks. The new behaviour has the 

Mark_tracking_translator which handles the mark events and decides to whether 

to have the Mark_engraver create a mark.

So when the Mark_engraver is at Staff level and the Mark_tracking_translator 

is at Staff level each mark event will be handles in the respective staff and 

sent to the corresponding Mark_engraver. But if the Mark_tracking_translator 

is on Score level it will handle all mark events that appear within the score 

and send them to all Mark_engravers within the score, which means that each 

Staff will get every Mark.

Cheers,

Valentin

Am Dienstag, 21. Dezember 2021, 00:15:56 CET schrieb David Sumbler:

On Mon, 2021-12-20 at 18:20 +0100, Jean Abou Samra wrote:

Le 20/12/2021 à 16:18, David Sumbler a écrit :

I set a piece a while ago using Lilypond 2.19.48.  It consists of 2

staves, and I used \mark for some annotations that I wanted to

appear above or on barlines - mostly the "crotchet - dotted

crotchet" type of thing.  Sometimes these only applied to one of

the staves, so I would specify the mark in the music for the

appropriate staff.  I added:      \layout {\context {

\Score   \remove Mark_engraver }\context { \Staff   \consists

Mark_engraver }      }and it all worked just as intended.

I was recently asked to make a new version of the piece.  The main

change is from a male voice to a female one, but this necessitated

a few changes in the other (instrumental) staff.  I ran convert-ly

on copies of the original files as I now had Lilypond 2.23.4

installed.  I then edited these to produce the new version

Unfortunately the behaviour of RehearsalMark seems to have changed.

 Whereas previously a mark only appeared over the staff whose music

it was specified in, I find that now all of the marks appear in

both staves, regardless of which staff they are intended for.

Is this a bug or an intentional change?  And is there another way I

can use marks to get the result I want and previously had?

This change was intended, see the top entry at

http://lilypond.org/doc/v2.23/Documentation/changes/index.html

To get the old behaviour, also move theMark_tracking_translator, like

this:

\version "2.22.1"

\layout {   \context {     \Score     \remove Mark_engraver

\remove Mark_tracking_translator   }   \context {     \Staff

\consists Mark_engraver     \consists Mark_tracking_translator   }}

<<   \new Staff { \mark \default c'1 }   \new Staff { c'1 \mark

\default } >>

Regards,Jean

Thank you for that.  A nice, simple fix to implement.  I must say,

though, that I'm having a bit of difficulty getting my head around the

new behaviour!

David