Default hint for a call

hint.for.call(
  call,
  ps = get.ps(),
  env = ps$stud.env,
  stud.expr.li = ps$stud.expr.li,
  part = ps$part,
  from.assign = !is.null(lhs),
  lhs = NULL,
  call.obj = NULL,
  s3.method = NULL,
  start.char = "\n",
  end.char = "\n"
)