Change clef on grace silent rest has no horizontal space

[Pavel Roskin]

Hello!

David Kastrup asked me to report this bug earlier today.  This is a
simplified example.

\version "2.17.20"
{
  \grace { s4 }
  \clef bass c'4
}

The bass clef collides with the time signature.  Also, the note is
positioned too close to the bass clef.  The note position would be OK
if the bass clef wasn't there.

The bug is not limited to the beginning of score.  In this example, the
change clef appears to have no horizontal extent.

\version "2.17.20"
{
  c'4 c'4
  \grace { s4 }
  \clef bass c'4 c'4
}

-- 
Regards,
Pavel Roskin

grace1.png
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grace2.png
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