# A → β # β define(⟦ERROR⟧, ⟦ # transition to the next node define(⟦$0⟧, defn(⟦NEXT_ITEM⟧)) divert($0_QU)dnl <$0_NAME> ⟦$1⟧ $2 divert($0_END)dnl divert(-1) ⟧) # β define(⟦NEXT_ITEM⟧, ⟦ divert($0_QU)dnl ⟦$1⟧ $2 divert(-1) ⟧) # A → β define(⟦QUERY⟧, defn(⟦ERROR⟧)) define(⟦WARNING⟧, defn(⟦ERROR⟧)) divert(0)dnl divert(LAST_QUEUE)dnl divert(-1)