It seems that this property has been removed in the implementation and
that the Volta_engraver by default has been moved to the Score context
(I seem to recall that I proposed a similar solution many years ago).
So, to get volta brackets on the top of a stave in the middle of the score,
you should instead add the Volta_engraver to it, see the regression test
called volta-multi-staff-inner-staff.ly

\score { <<
 \new Staff { \repeat volta 2 { c'1 } \alternative { c' } }
 \new Staff { \repeat volta 2 { c'1 } \alternative { c' } }
 \new Staff \with { \consists Volta_engraver } { c'2 g' e' a' }
 \new Staff { \repeat volta 2 { c'1 } \alternative { c' } }
>> }

Unfortunately, the manual (and the documentation of voltaOnThisStaff in
scm/define-context-properties.scm) were not updated correspondingly.

   /Mats

Eyolf Østrem wrote:
voltaOnThisStaff is documented as follows in the IR:

Normally, volta brackets are put only on the topmost staff. This variable
overrides this behavior, when set to #t or #f.

However, taking a snippet from LSR and trying out various combinations,
always gives the same result: the volta bracket is printed above the top
staff (incl. the ChordNames).

\score { <<
  \new ChordNames \with { voltaOnThisStaff = ##f } \chordmode { c1 c }
  \new Staff \with { voltaOnThisStaff = ##t } { \repeat volta 2 { c'1 } 
\alternative { c' } }
}
\score { <<
  \new Staff \with { voltaOnThisStaff = ##f } { \repeat volta 2 { c'1 } 
\alternative { c' } }
  \new Staff \with { voltaOnThisStaff = ##t } { c'2 g' e' a' }
}
\score { <<
  \new ChordNames \with { voltaOnThisStaff = ##t } \chordmode { c1 c }
  \new Staff \with { voltaOnThisStaff = ##t } { \repeat volta 2 { c'1 } 
\alternative { c' } }
  \new Staff \with { voltaOnThisStaff = ##t } { c'2 g' e' a' }
}
\score { <<
  \new ChordNames \with { voltaOnThisStaff = ##f } \chordmode { c1 c }
  \new Staff \with { voltaOnThisStaff = ##f } { \repeat volta 2 { c'1 } 
\alternative { c' } }
  \new Staff \with { voltaOnThisStaff = ##t } { c'2 g' e' a' }
}




--
=============================================
        Mats Bengtsson
        Signal Processing
        Signals, Sensors and Systems
        Royal Institute of Technology
        SE-100 44  STOCKHOLM
        Sweden
        Phone: (+46) 8 790 8463                         
       Fax:   (+46) 8 790 7260
        Email: [EMAIL PROTECTED]
        WWW: http://www.s3.kth.se/~mabe
=============================================



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