Contextual Filter for a Multiple Value Taxonomy Field I have a content type with a taxonomy field that allows multiple values (a set of positions within the organization).  I'm trying to create a view of some of these positions by passing a contextual filter via the URL.  I can make a hard coded filter for a specific position by entering a filter criteria that says the field must be one of whatever position I'm looking for.  However, when I try using a contextual filter instead, nothing is returned.  I'm guessing it's because the contextual filter is not using a "one of" comparison. How do I create a filter that will display content types with the given position from the URL?
Should be possible with View → Advanced → Your Contextual Filter → More → Allow Multiple Values. 

Then supply values like "123+456" to get all that have either tid 123 or 456, or values like "123,456" if you only want those that have both terms applied. 

Note this does not scale well because of the way Views does its SQL