Break visibility for notes?

[Fr. Samuel Springuel]

Is there a way to specify that a note should only appear if it’s the first note 
on the line?  I tried using the break-visibility property but this doesn’t seem 
to be working (the notes simply disappear entirely.

\version "2.19.84"

mystart = \override Voice.NoteHead.break-visibility = #begin-of-line-visible

myend = \revert Voice.NoteHead.break-visibility

music = { \repeat unfold 20 { c' } \mystart g' g' g' g' g' g' g' g' \myend 
\repeat unfold 20 { c' } }

\new Staff {
    \new Voice = "mel" { \music }
}

✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝✝
Fr. Samuel, OSB
(R. Padraic Springuel)
St. Anselm’s Abbey
4501 South Dakota Ave, NE
Washington, DC, 20017
202-269-2300
(c) 202-853-7036

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