Issue 1311 in lilypond: New spacing code affects user-created pseudo-staff contexts

[lilypond]

Status: Accepted
Owner: ----
Labels: Regression Priority-Medium Type-Defect

New issue 1311 by v.villenave: New spacing code affects user-created  
pseudo-staff contexts
http://code.google.com/p/lilypond/issues/detail?id=1311

%% In the following example, a pseudo-staff context (LyricStaff) is created
%% by the user.  However, the code that used to work with 2.12.3 now
%% produces an unwanted vertical space with 2.13.*.  See attached.

melody = \relative c' {
  d1
}

mylyrics = \lyricmode {
  aaa
}

\layout {
  \context {
    \Staff
    \name LyricStaff
    \alias Staff
    \override StaffSymbol #'line-count = #0
    \override StaffSymbol #'Y-extent = ##f
    \remove Clef_engraver
    \remove Ledger_line_engraver
    \remove Key_engraver
    \remove Time_signature_engraver
  }
  \context {
    \ChoirStaff
    \accepts LyricStaff
  }
}
\score {
  \new ChoirStaff <<
    \new Staff \new Voice = sopranos \melody
    \new LyricStaff \new Lyrics \lyricsto sopranos \mylyrics
    \new Staff \new Voice \melody
  >>
}

%% From an old bug report:  
http://old.nabble.com/big-space-added-between-treble-clef-and-lyrics-ts26621102.html

Attachments:
        spacing-2.12.3.png  1.3 KB
        spacing-2.13.35.png  1.3 KB