# File lib/fog/compute/aws.rb, line 151
        def apply_tag_filters(resources, filters)
          # tag-key: match resources tagged with this key (any value)
          if filters.has_key?('tag-key')
            value = filters.delete('tag-key')
            resources = resources.select{|r| r['tagSet'].has_key?(value)}
          end
          
          # tag-value: match resources tagged with this value (any key)
          if filters.has_key?('tag-value')
            value = filters.delete('tag-value')
            resources = resources.select{|r| r['tagSet'].values.include?(value)}
          end
          
          # tag:key: match resources taged with a key-value pair.  Value may be an array, which is OR'd.
          tag_filters = {}
          filters.keys.each do |key| 
            tag_filters[key.gsub('tag:', '')] = filters.delete(key) if /^tag:/ =~ key
          end
          for tag_key, tag_value in tag_filters
            resources = resources.select{|r| tag_value.include?(r['tagSet'][tag_key])}
          end
          
          resources
        end