http://lsr.di.unimi.it/LSR/Item?id=506 "Polymetric section: synchronizing different groups of staves" is broken as well, probably for a long time. Currently it prints a mess with BarLines and the MultiMeasureRest ist displaced. Seems 2.20 is the first version complaining about the MMR: programming error: Multi_measure_rest::get_rods (): I am not spanned!
Thus it wasn't noticed earlier, I assume. I attach the output from 2.12.3 which seems to be the last version with intended output. Compare with current LSR. Suggestions to fix it are welcome :) Cheers, Harm
