We are trying to clean up the labels used on a project; I would like to find a way to see a list of issues that have a label that is NOT in a set of labels that I specify.
For example, I want to find all issues that have any label that is not one or more of (foo, bar). Some issues might have 2 labels, such as (foo, zing). I need to find all issues that contains any label that is not foo or bar.