misaligned fret labels in fret diagrams

[pls]

Hi all,

in another thread I mentioned that I believe that the default vertical 
alignment of the fret labels in fret diagrams is currently wrong.  The fret 
labels appear to be placed one fret above the lowest fret they are referring 
to.  Carl asked me to post a bug report, so here it is:

\version "2.19.20"

#(set-global-staff-size 40)
<<
  \chords { d1:7 g1:7 a1:7 d1 g }
  \new FretBoards {
    <d-1 a-3 c'-1 fis'-4 a'-1>1
    <g,-1 d-3 f-1 b-2 d'-1 g'-1>1
    \transpose g a { <g,-1 d-3 f-1 b-2 d'-1 g'-1>1 }
    <d fis a>1
    <g b d'>1
  }
>>



This is what it currently looks like (misaligned-fret-labels.png):


red line: current vertical alignment
green line: correct vertical alignment

(The lowest fret is at the top of the diagram.  The first three diagrams should 
actually have a barre indicator.  Carl is already working on a patch.  And 
while we’re at it: the alignment of the fingers in this png also looks fishy to 
me!)



Here’s another illustration of where the fret labels should be positioned 
(correct-fret-labels):


hth,
patrick