Re: Multi-measure rest compression and rehearsal marks

[Aaron Hill]

On 2020-10-19 12:00 am, Adam Griggs wrote:
> Hello again,
>
> This has me stumped. I've been digging for hours.
>
>    \version "2.21.7"
>
>    global = {
>         \skip 1*24
>         \mark \default
>         \skip 1*12
>         \mark \default
>         \skip 1*12
>    }
>
>    music = \relative c'' {
>         \compressMMRests
>         R1*48
>    }
>
>    \new Staff << \global \music >>
>
>
> Why does multi-measure rest compression fail after the first rehearsal 
> mark?

That seems like a bug or just a limitation of functionality.  I suspect 
the logic for \compressMMRests tries to compress the R1*48 as much as it 
can but does not split it into multiple such rests.


> I also tried:
>
>    music = \relative c'' {
>         \compressMMRests
>         R1*24
>         R1*12
>         R1*12
>    }
>
> No go.

\compressMMRests is a function that operates on music that follows.  
Your usage above only applies to the R1*24.

The solution is to use the function at a more top-level scope.

%%%%
\version "2.20.0"

global = {
  \skip 1*24
  \mark \default
  \skip 1*12
  \mark \default
  \skip 1*12
}

music = \compressMMRests {
  R1*24
  R1*12
  R1*12
}

\new Staff << \global \music >>
%%%%

-- Aaron Hill