#4856 missing minimum distance for extender line in lyrics

[Werner LEMBERG]

\version "2.19.41"

#(set-default-paper-size "a8")
#(set-global-staff-size 19)

\paper {
  systems-per-page = 5 }
\header {
  texidoc = "Setting a minimum non-staff related-staff distance is necessary
for extender lines on a lyrics line that contains no words.

Here is a counterexample.  If you comment out the two lines below, you get
the right behaviour."

  tagline = "" }

<<
  \new Voice = "solo" {
    c''1 ~ \break
    c''1 ~ \break
    c''1 ~ \break
    c''1 ~ \break
    c''1 }
  \new Lyrics \with {
%    \override VerticalAxisGroup.nonstaff-relatedstaff-spacing
%                               .minimum-distance = #4
  } \lyricsto "solo" {
    foo __ }
>>

% eof

[Werner LEMBERG]

Ah, I forgot to mention that I suggest to add a default value for minimum-distance in the engraver-init.ly file.