1\version "2.19.21"
2
3\header {
4  texidoc = "
5Complex completion heads work properly in a polyphonic environment.
6"
7}
8
9\layout {
10  \context {
11    \Voice
12    \remove "Note_heads_engraver"
13    \consists "Completion_heads_engraver"
14  }
15}
16
17\context Staff \relative <<
18  { c''4. c c c4 c4. c4 }
19  \\
20  { g8 g2 g1 g4. }
21>>
22