1399,1415d1398
< 			//Custom Taxonomies
< 			foreach( $qv as $var => $value ) {
< 				if( ( $pos = strpos( $var, '__in' ) ) && $var != 'tag__in' && $var != 'category__in' && $var != 'post__in' && $var != 'tag_slug__in' ) {
< 					$custom_taxonomies[ $var ] = substr( $var, 0, $pos );
< 				}
< 				elseif( ( $pos = strpos( $var, '__not_in' ) ) && $var != 'tag__not_in' && $var != 'category__not_in' && $var != 'post__not_in' ) {
< 					(array) $this->custom_taxonomies__not_in[ $var ] = substr( $var, 0, $pos );
< 				}
< 			}
< 			
< 			foreach( (array) $custom_taxonomies as $var => $custom_tax ) {
< 				$item = 'is_' . $custom_tax;
< 				$this->$item = true;
< 				(array) $qv[$var];
< 			}
< 			$this->custom_taxonomies = (array) $custom_taxonomies;
< 
1922,1940c1905
< 		//Custom Taxonomies
< 		foreach( (array) $this->custom_taxonomies as $var => $custom_tax ) {
< 		  	$join = " INNER JOIN $wpdb->term_relationships ON ($wpdb->posts.ID = $wpdb->term_relationships.object_id) INNER JOIN $wpdb->term_taxonomy ON ($wpdb->term_relationships.term_taxonomy_id = $wpdb->term_taxonomy.term_taxonomy_id) ";
< 		  	$reqtag = is_term( $q[$var][0], $custom_tax );
<                       $distinct = 'DISTINCT';
< 		}
< 		
< 		//Custom Taxonomy Not In
< 		foreach( (array) $this->custom_taxonomies__not_in as $var => $custom_tax ) {
< 			if ( $wpdb->has_cap( 'subqueries' ) ) {
< 				$tax_string = "'" . implode("', '", $q[$var]) . "'";
< 				$whichcat .= " AND $wpdb->posts.ID NOT IN ( SELECT tr.object_id FROM $wpdb->term_relationships AS tr INNER JOIN $wpdb->term_taxonomy AS tt ON tr.term_taxonomy_id = tt.term_taxonomy_id WHERE tt.taxonomy = '$custom_tax' AND tt.term_id IN ($tax_string) )";
< 			} else {
< 				$ids = get_objects_in_term($q[$var], $custom_tax);
< 				if ( !is_wp_error($ids) && is_array($ids) && count($ids) > 0 )
< 					$whichcat .= " AND $wpdb->posts.ID NOT IN ('" . implode("', '", $ids) . "')";
< 			}
< 		}
< 
< 		// Tag and slug intersections. Also merge with custom taxonomies
---
> 		// Tag and slug intersections.
1942d1906
< 		$intersections = array_merge( $intersections, (array) $this->custom_taxonomies );
1945a1910
> 			if ( in_array($item, $tagin) && empty($q['cat']) ) continue; // We should already have what we need if categories aren't being used
1953c1918
< 			$taxonomy_field = $item != ('tag_slug__and' || 'tag_slug__in') ? 'slug' : 'term_id';
---
> 			$taxonomy_field = $item == ('tag_slug__and' || 'tag_slug__in') ? 'slug' : 'term_id';