-- in.journal --
include child.journal
2024/01/01 t
  a  $1

-- child.journal --
account expenses:food
2024/06/15 lunch
  expenses:food  $5
  assets:cash

-- expect --
== in.journal ==
  1 include child.journal
  2 2024-01-01 t
== child.journal ==
  1 account expenses:food
  2 2024-06-15 lunch