quarter-tone tablature bug

[Bernardo Barros]

> I'm not top posting.

(Sorry, I didn't know I should have sent the bug report to this list instead of 
the google code bug tracker) 

In the Following code, the `string 2' is tuned to `beh'. 
The bug sets bih *and* cih to fret 1 on that same string, 
and all other notes are not correctly set, 
the tablature is always one fret down from the third note on.

Trying more variants I find it does have nothing to do with the pitch beh, but 
maybe setting a quarter-tone tune to the second string will always triggers the 
bug? 

Also tested with git version from 27/jun/2011.

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\makeStringTuning #'custom-tuning <eeh, a, d ges beh eeh'>

notes = {
  beh\2 bih\2 cih'\2 deh'\2 dih'\2 eeh'\2
}

\score {
  <<
    \new Staff {  
          \clef "treble_8" 
          \notes 
    }   
    \new TabStaff   { 
      \set TabStaff.stringTunings = #custom-tuning
          \notes 
    }
  >>
}
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Changing the second string from beh to aeh is also buggy:

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\makeStringTuning #'custom-tuning <eeh, a, d ges aeh eeh'>

notes = {
  beh\2 bih\2 cih'\2 deh'\2 dih'\2 eeh'\2
}

\score {
  <<
    \new Staff {  
          \clef "treble_8" 
          \notes 
    }   
    \new TabStaff   { 
      \set TabStaff.stringTunings = #custom-tuning
          \notes 
    }
  >>
}
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