Changing form of multi-measure rests

If there are ten or fewer measures of rests, a series of longa and breve rests (called in German “Kirchenpausen” – church rests) is printed within the staff; otherwise a long, thick horizontal line is shown. This default value of ten may be changed by overriding the expand-limit property.

\version "2.24"

\relative c'' {
  \compressMMRests {
    R1*2 | R1*5 | R1*9
    \override MultiMeasureRest.expand-limit = 3
    R1*2 | R1*5 | R1*9
  }
}