Quick Search should support 'unresolved' as a keyword

I like the magic keywords that Quick Search understands but I find that what I always want is to search unresolved issues. I personally think that the 'open' status of an issue is not very interesting, because I always want to see 'in progress' and 'reopened' issues too. What I most want to see is unresolved issues (JRA-6529). I think it would be very helpful to support a new 'unresolved' keyword that behaves the same as the 'open' keyword but filters the list to be only unresolved issues.