(C {(builtin)} 
  {
    (BracedVarSub
      token: <VSub_Number 0>
      suffix_op: (StringUnary op_id:VOp1_DPound arg_word:{('*') (Lit_Slash /)})
      spids: [11 16]
    )
  } 
  {
    (BracedVarSub
      token: <VSub_Number 1>
      suffix_op: (StringUnary op_id:VTest_Plus arg_word:{(DQ ($ VSub_At '$@'))})
      spids: [18 24]
    )
  }
)