Dollar Geneal posted second quarter earnings of $0.83 a share on revenue of $4.72 billion. Wall Street analysts were looking for $0.83 a share on sales of $4.77 billion. Last year, the discount retailer earned $0.77 a share on $4.39 billion in revenue. On the merger front, Dollar General Corp said it remained committed to acquiring rival Family Dollar Stores, which last week spurned a $9 billion buyout offer from Dollar General. Family Dollar said it was worried the deal would be deemed anti-competitive by government regulators and opted instead for a lower bid from Dollar Tree. TheStreet's Gregg Greenberg has details from New York.