Re: Enabling item-interface

[Joe Neeman]

On Mon, 2009-03-02 at 21:05 -0700, Carl D. Sorensen wrote:
> I'm working to enable the chordChanges property for a FretBoards object.
> 
> I've changed the fretboard-engraver to keep track of the last fretboard,
> using the chord-name-engraver as a model.  I've verified that the code works
> to keep track of the changes in the fretboards.
> 
> Here's the relevant code from fretboard-engraver.
> 
>   SCM changes = get_property("chordChanges");
>   if (to_boolean (changes) && scm_is_pair(last_fret_notes_)
>       && ly_is_equal (last_fret_notes_, fret_notes))
>     fret_board_->set_property ("begin-of-line-visible", SCM_BOOL_T);

Why does ChordName use 'begin-of-line-visible = #t instead of
'break-visibility = begin-of-line-visible like all the other items?
That's why this change doesn't work AFAICT: chord-name.cc has extra
logic to deal with the 'begin-of-line-visible property that doesn't
apply to FretBoard.

Joe