Multi-measure rest length control

Multi-measure rests have length according to their total duration which is under the control of MultiMeasureRest.space-increment. Note that the default value is 2.0.

\version "2.24"

\relative c' {
  \compressEmptyMeasures
  R1*2 R1*4 R1*64 R1*16
  \override Staff.MultiMeasureRest.space-increment = 2.5
  R1*2 R1*4 R1*64 R1*16
}

\paper { tagline = ##f }