Fwd: bug or feature with the extent of NoteColumn with "2.15.20" ?

[Colin Hall]

On Thu, Dec 08, 2011 at 12:54:12AM +0100, Thomas Morley wrote:
>
> trying to compile a function manipulating the NoteColumn with "2.15.20" I
> noticed some differences to "2.14.2"
> So I wrote a test-function to display the grob-length:
> 
> \version "2.14.2"
> %\version "2.15.20"
> 
> #(define (x-length-of-grob grob)
>   (let* ((sys (ly:grob-system grob))
>          (grob-length (interval-length (ly:grob-extent grob sys X))))
>   (newline)
>   (display grob-length)))
> 
> \relative c' {
>         \override NoteColumn #'after-line-breaking = #x-length-of-grob
>         <c e>4
>         <c e>4.
>         <c eis>4
>         <c eis>4\arpeggio
> }
> 
> With "2.14.2" I get:
> 1.316178
> 1.316178
> 1.316178
> 1.316178
> 
> With "2.15.20" I get:
> 1.316178
> 1.316178
> 1.316178
> 2.616182
> 
> 
> It seems that in "2.15.20" the arpeggio is part of the NoteColumn. (But not
> the DotColumn or the AccidentalPlacement)
> The IR 3.2.71 note-column-interface states only stems and noteheads.

I'm unable to determine if this is a legitimate bug report or not. Could one of 
the devs advise, please?

Cheers,
Colin.

-- 

Colin Hall