Re: A couple of questions about Edition Engraver

[Jan-Peter Voigt]

Hi David,

Urs already answered. I understand your concerns about the input and I 
am always open for ideas to ease the input for the edition-engraver. 
Like Urs already mentioned your proposal will be difficult to implement 
because it doesn't use the standard parser schemes. But it sheds light 
on how others might expect an easy/consistent input.

What is not explained in the demo files (yet) is: You are always free to 
use constructs like

\editionMod test 1 0/4 Voice {
  <>(
  \once \override NoteHead.color = #red
  \once \override Beam.color = #red
}

To address multiple time steps at once you can use \editionModList, to 
address multiple contexts at once you can use regular expressions and 
wildcards like in 
https://github.com/openlilylib/edition-engraver/blob/master/usage-examples/development-3.ly

Your example implies that it would be a useful feature if one can split 
timing and context information into several layers. I'll think about it.

I am going to focus on the edition-engraver development in April or May.

Jan-Peter


Am 19.02.2018 um 11:59 schrieb David Sumbler:
> As a newcomer to using Edition Engraver, and looking at the example
> files etc., I wondered why they were written with so much repetition.
>   "Perhaps it is just to keep things easy for newcomers like me to
> understand," I thought.
>
> So I experimented with reformatting using braces as Lilypond does,
> which seemed the method most likely method.  For instance,
>
> \editionMod test 1 0/4 Voice \(
> \editionMod test 1 1/4 Lyrics #(make-music 'ExtenderEvent)
> \editionMod test 1 2/8 Voice [
> \editionMod test 2 0/4 Score \time 3/4
> \editionMod test 2 0/4 Score \tempo "Allegro" 4=135
> \editionMod test 2 0/4 Voice \p
> \editionMod test 2 0/4 Voice \<
> \editionMod test 2 1/4 Lyrics #(make-music 'HyphenEvent)
>
> might become
>
> \editionMod test {
>    1 {
>      0/4 Voice \(
>      1/4 Lyrics #(make-music 'ExtenderEvent)
>      2/8 Voice [
>      }
>    2 {
>      0/4 {
>        Score {
>         \time 3/4
>         \tempo "Allegro" 4=135
>        }        
>        Voice {
>          \p
>          \<
>        }
>      }
>      1/4 Lyrics #(make-music 'HyphenEvent)
>    }    
> }
>
> This is much clearer to me, and it would potentially be much easier to
> find one's way around the file for maintenance and the addition of new
> items.  I appreciate that one might not necessarily want all entries in
> the order they appear in the score.
>
> Unfortunately, what I wrote doesn't work.
>
> Is there any likelihood that something similar to what I have suggested
> might be added to Edition Engraver in the forseeable future?
>
> And how near are we to seeing Edition Engraver included in Lilypond
> itself?
>
> David
>
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