Re: Add \mark entries with edition-engraver?

[Jan-Peter Voigt]

Hi Urs, hi list,

as I am the inventor of the edition-engraver, I'd like to try some 
explanation ...
The edition-engraver is a scheme-engraver, which looks at most of the 
defined hooks, if there are mods for its id on the current time (= 
measure + position-in-measure).
They are:

* initialize : init engraver with id
* acknowledgers:
       * paper-column-interface : catch up with break events
* start-translation-timestep : context-mod-apply, overrides, sets
* stop-translation-timestep : revert overrides and sets, which are 
tagged with 'once'
* process-music : create grobs for TextScript-events
* finalize : write edition-log-file, if context is Score

As you can see, mark-events are not processed right now. This is an 
engraver and engravers should be able to engrave any grob.
I am going to - my time is still filled up with other workings to do, 
totally unrelated to lilypond  ... -
so, I am going to redesign the edition-engraver that it can deal more 
flexible with the id as you, Kieren et al. proposed.
Another thing is, to create other grobs, like marks, KeySignatures and 
such. It might be possible to utilize existing engravers for such a path.
Right now the id is injected on creation, so each edition-engraver is a 
unique object. On redesign, I will make the engraver a common object, 
which looks for a context-property 'edition-id' (or the like). Then the 
engraver can be consisted globally in the layout block to all contexts 
and the id just be set as a context-property as needed.

And on redesign, I hope to write some comments in some more readable, 
organized code ;)

For now :)
Best, Jan-Peter

P.S.: A happy new year to you!

Am 09.01.2015 um 18:31 schrieb Urs Liska:
> Hi folks,
>
> I've successfully managed to add \break events to a score with the 
> edition-engraver. With a wrapper function I can now maintain all 
> manual breaks in one Scheme list.
>
> Another thing I find very useful is passing skipTypesetting events to 
> the score, so I could create a function to compile parts of a score 
> only (e.g. measure 50-67 or page 3-5 (which can be deduced from the 
> above list of (original) page breaks).
>
> However,what doesn't seem to work is passing \mark events that way with
>
> \editionMod fullscore 5 0/4 score.Score.A \mark \default
>
> Is it known that I don't get them in the score like this? Do I have to 
> create a dummy voice and add it to a staff? Anything else I could do?
>
> While I am extremely impressed by the edition-engraver I' m often at a 
> loss because editing is somewhat like flying in the dark.
>
> Urs
>
>
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