Defining custom fretboards

[James Worlton]

Hello,

I am doing work for a client involving fretboard diagrams. He does not 
like that the default barred chords show the dots in between the 
outermost strings involved.

Is there a way to turn off the dots "in the middle" of a barred fret? I 
can do it when I create a fretboard markup diagram. What I would like to 
do is be able to define this in an alternate fret table as described here:
http://lsr.di.unimi.it/LSR/Item?id=810

In defining the new fretboard I tried removing the string definition all 
together (works in markup freboards), and tried setting the string to 
"1-0" to remove the dot, all to no avail. Below is code illustrating 
what I mean.

Thanks!
James Worlton

\version "2.19.18"

#(define custom-fretboard-table-one (make-fretboard-table))
\storePredefinedDiagram #custom-fretboard-table-one
\chordmode{f}
#guitar-tuning
"1-1-(;3-3;3-4;2-2;1-0;1-1-);" % the "1-0" on the 2nd string doesn't 
remove the dot

names = {
  \chordmode {
    \set predefinedDiagramTable = #custom-fretboard-table-one
    f1
  }
}

fmajorchord = ^\markup { \fret-diagram #"c:6-1-1;6-1;5-3;4-3;3-2;1-1;" }

\score {
  <<
    \new ChordNames { \names }
    \new FretBoards { \names }
    \new Staff { f'1 }
    \new Dynamics { s1^"how I want it:" \fmajorchord }
  >>
}