Embedded repeats

[Menu Jacques]

Hello folks,

This sample is compiled and drawn alright (with a confusing look to it, though).

Is this just unsupported, or are there use cases for such an embedding?

\version "2.19.44"

{
  \repeat volta 2 {
    c
    \repeat volta 2 {
      d
      \repeat volta 2 {
        e
      }
    }
  }
}

Thanks!

JM