input/test/part-combine.ly

   1 \score{
   2         \context Staff = first <
   3                 \context Voice=first { \skip 1; }
   4                 \context Voice=second { \skip 1; }
   5
   6                 \context Voice=first \partcombine Voice
   7                         \context Thread \notes\relative c''
   8                                 {
   9                                         c4 d e f
  10                                         c4 d e f
  11                                 }
  12                         \context Thread \notes\relative c''
  13                                 {
  14                                         a b c d
  15                                         a4. b8 c4 d
  16                                 }
  17                 >
  18 }