\version "2.16.0"

\include "combineMultimeasureRests.ily"

insert =
#(define-music-function (parser location)()
   #{ #})

music = \relative c' {

  \combineMMRests {
    c2 c
    R1*4 |
    %\barNumberCheck #6
    %\insert
    R1*3
    c1
  }
}

\score {
  \new Staff {
    \compressFullBarRests
    \music
  }
}