Re: Completion_heads_engraver for line-ends only?

[Lukas-Fabian Moser]

> I am afraid this would be exceedingly difficult technically.
> Engravers run way earlier than line breaking, so the only
> option would be to let the engraver create both notations
> (with notes straddling over bar lines and with tied notes),
> and remove one of them later, but there is a lot of code in
> between that is not prepared for ignoring the collisions
> that will unavoidably ensue, it would have consequences on
> horizontal spacing, etc.

That's what I thought as well, but I think one wouldn't need to create 
both notations: Just create the tied notes only and, if not needed, 
tweak the note heads and kill some ties/other notes as late as possible. 
I _think_ this should be possible, involving some cheating for creating 
dots for situations of the type 2~ 4.

Still a mess, though, and spacing would be messed up by all the 
un-needed ties and extra notes.

Lukas