RE: MetronomeMark aligned to accidentals

[Daniel Rosen]

> -----Original Message-----
> From: Trevor Daniels [mailto:address@hidden
> Sent: Saturday, April 05, 2014 6:24 PM
> To: Daniel Rosen; address@hidden
> Subject: Re: MetronomeMark aligned to accidentals
> 
> 
> Daniel, you wrote Saturday, April 05, 2014 1:44 PM
> 
> > I would like the MetronomeMark to be aligned with the left edge of the
> leftmost Accidental (almost with the BarLine, but not quite). I've been trying
> to manipulate the Score.MetronomeMark.non-break-align-symbols
> property, but to no avail (I'm not sure I quite understand how that property
> works; it's a little unclear to me in the IR). Can anyone steer me in the 
> right
> direction?
> 
> I think you'll find all you need to know in the following section.  You can't 
> align
> to an accidental using this, but by using an offset from an alignment to the
> bar line anchor you may be able to achieve the positioning you want.
> 
> http://www.lilypond.org/doc/v2.17/Documentation/notation/aligning-
> objects#using-the-break_002dalignable_002dinterface
> 
> Trevor

I've tried this based on the page you linked me to above, but it's not working. 
What am I missing here? 

\version "2.19.3"
{
  R1 |
  \override Score.MetronomeMark.break-align-symbols = #'(key-signature)
  \tempo "Tempo"
  <as' bes'>
}

DR