automatic beams over rest

[Stefan Thomas]

Dear community,
I found a very simple solution for automatic beams over rests.
I don't understand why it works, but it actually does:
\version "2.12.2"

music =  {
  c' 8 r r d' e' r f' r 
  \times 2/3 {r8 r g'  } \times 2/3 {r8  r16 a' r8  } r8 r16 b' r8 r16 c'' 
}
beams = { \repeat "unfold" 8 { s8..[ s32]} }
\new Staff { \context Voice << {\music} {\beams }>> }