OttavaBracket bug

[Matthew]

crossposted from http://article.gmane.org/gmane.comp.gnu.lilypond.general/36259

I may have found a bug in setting the left edge-height in ottava brackets.  The
program-reference doesn't say anything about values being hardcoded.

Near-minimal example - shorten-pair is there to show that the left side does
work in at least one case.

\version "2.11.43"%%
\relative c'' 
{       
   {
      #(set-octavation 1)
      \set Staff.ottavation = #""
      %left edge doesn't work
      \override Staff.OttavaBracket #'edge-height = #'(1.2 . 1.2)
      %left edge does work
      \override Staff.OttavaBracket #'shorten-pair  = #'(-0.6 . -0.6)   
      c4
      #(set-octavation 0)
      c4
   }
}


Got a follow-up from Neil Puttock saying that in ottava-bracket.cc, the left
edge is set to zero after reading the edge-height values

Is this by design or accident?