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<title>[28783] trunk: Revert [28613] and [28664].</title>
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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://core.trac.wordpress.org/changeset/28783">28783</a></dd>
<dt>Author</dt> <dd>wonderboymusic</dd>
<dt>Date</dt> <dd>2014-06-20 16:20:35 +0000 (Fri, 20 Jun 2014)</dd>
</dl>

<h3>Log Message</h3>
<pre>Revert <a href="http://core.trac.wordpress.org/changeset/28613">[28613]</a> and <a href="http://core.trac.wordpress.org/changeset/28664">[28664]</a>. A good idea, but too much BC baggage.

See <a href="http://core.trac.wordpress.org/ticket/28099">#28099</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpincludesqueryphp">trunk/src/wp-includes/query.php</a></li>
<li><a href="#trunktestsphpunittestsqueryresultsphp">trunk/tests/phpunit/tests/query/results.php</a></li>
<li><a href="#trunktestsphpunitteststermqueryphp">trunk/tests/phpunit/tests/term/query.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpincludesqueryphp"></a>
<div class="modfile"><h4>Modified: trunk/src/wp-includes/query.php (28782 => 28783)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/src/wp-includes/query.php  2014-06-19 23:20:15 UTC (rev 28782)
+++ trunk/src/wp-includes/query.php     2014-06-20 16:20:35 UTC (rev 28783)
</span><span class="lines">@@ -1830,8 +1830,6 @@
</span><span class="cx">                          'field' => 'term_id',
</span><span class="cx">                          'include_children' => false
</span><span class="cx">                  );
</span><del>-               } elseif ( isset( $this->query['category__in'] ) ) {
-                       $q['category__in'] = false;
</del><span class="cx">           }
</span><span class="cx"> 
</span><span class="cx">          if ( ! empty($q['category__not_in']) ) {
</span><span class="lines">@@ -1889,8 +1887,6 @@
</span><span class="cx">                          'taxonomy' => 'post_tag',
</span><span class="cx">                          'terms' => $q['tag__in']
</span><span class="cx">                  );
</span><del>-               } elseif ( isset( $this->query['tag__in'] ) ) {
-                       $q['tag__in'] = false;
</del><span class="cx">           }
</span><span class="cx"> 
</span><span class="cx">          if ( !empty($q['tag__not_in']) ) {
</span><span class="lines">@@ -1918,8 +1914,6 @@
</span><span class="cx">                          'terms' => $q['tag_slug__in'],
</span><span class="cx">                          'field' => 'slug'
</span><span class="cx">                  );
</span><del>-               } elseif ( isset( $this->query['tag_slug__in'] ) ) {
-                       $q['tag_slug__in'] = false;
</del><span class="cx">           }
</span><span class="cx"> 
</span><span class="cx">          if ( !empty($q['tag_slug__and']) ) {
</span><span class="lines">@@ -2453,9 +2447,6 @@
</span><span class="cx">          } elseif ( $q['post__in'] ) {
</span><span class="cx">                  $post__in = implode(',', array_map( 'absint', $q['post__in'] ));
</span><span class="cx">                  $where .= " AND {$wpdb->posts}.ID IN ($post__in)";
</span><del>-               } elseif ( isset( $this->query['post__in'] ) ) {
-                       $post__in = 0;
-                       $where .= " AND 1=0 ";
</del><span class="cx">           } elseif ( $q['post__not_in'] ) {
</span><span class="cx">                  $post__not_in = implode(',',  array_map( 'absint', $q['post__not_in'] ));
</span><span class="cx">                  $where .= " AND {$wpdb->posts}.ID NOT IN ($post__not_in)";
</span><span class="lines">@@ -2466,9 +2457,6 @@
</span><span class="cx">          } elseif ( $q['post_parent__in'] ) {
</span><span class="cx">                  $post_parent__in = implode( ',', array_map( 'absint', $q['post_parent__in'] ) );
</span><span class="cx">                  $where .= " AND {$wpdb->posts}.post_parent IN ($post_parent__in)";
</span><del>-               } elseif ( isset( $this->query['post_parent__in'] ) ) {
-                       $post_parent__in = 0;
-                       $where .= " AND 1=0 ";
</del><span class="cx">           } elseif ( $q['post_parent__not_in'] ) {
</span><span class="cx">                  $post_parent__not_in = implode( ',',  array_map( 'absint', $q['post_parent__not_in'] ) );
</span><span class="cx">                  $where .= " AND {$wpdb->posts}.post_parent NOT IN ($post_parent__not_in)";
</span><span class="lines">@@ -2508,13 +2496,6 @@
</span><span class="cx">                  $where .= $clauses['where'];
</span><span class="cx">          }
</span><span class="cx"> 
</span><del>-               // If *__in is passed to WP_Query as an empty array, don't return results
-               foreach ( array( 'category', 'tag', 'tag_slug' ) as $in ) {
-                       if ( isset( $q["{$in}__in"] ) && false === $q["{$in}__in"] ) {
-                               $where = " AND 1=0 $where";
-                       }
-               }
-
</del><span class="cx">           if ( $this->is_tax ) {
</span><span class="cx">                  if ( empty($post_type) ) {
</span><span class="cx">                          // Do a fully inclusive search for currently registered post types of queried taxonomies
</span><span class="lines">@@ -2606,9 +2587,6 @@
</span><span class="cx">          } elseif ( ! empty( $q['author__in'] ) ) {
</span><span class="cx">                  $author__in = implode( ',', array_map( 'absint', array_unique( (array) $q['author__in'] ) ) );
</span><span class="cx">                  $where .= " AND {$wpdb->posts}.post_author IN ($author__in) ";
</span><del>-               } elseif ( isset( $this->query['author__in'] ) ) {
-                       $author__in = 0;
-                       $where .= ' AND 1=0 ';
</del><span class="cx">           }
</span><span class="cx"> 
</span><span class="cx">          // Author stuff for nice URLs
</span></span></pre></div>
<a id="trunktestsphpunittestsqueryresultsphp"></a>
<div class="modfile"><h4>Modified: trunk/tests/phpunit/tests/query/results.php (28782 => 28783)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/tests/phpunit/tests/query/results.php      2014-06-19 23:20:15 UTC (rev 28782)
+++ trunk/tests/phpunit/tests/query/results.php 2014-06-20 16:20:35 UTC (rev 28783)
</span><span class="lines">@@ -402,13 +402,16 @@
</span><span class="cx"> 
</span><span class="cx">  }
</span><span class="cx"> 
</span><ins>+       /**
+        * @ticket 28099
+        */
</ins><span class="cx">   function test_empty_post__in() {
</span><span class="cx">          $posts1 = $this->q->query( array() );
</span><span class="cx">          $this->assertNotEmpty( $posts1 );
</span><span class="cx">          $posts2 = $this->q->query( array( 'post__in' => array() ) );
</span><del>-               $this->assertEmpty( $posts2 );
</del><ins>+                $this->assertNotEmpty( $posts2 );
</ins><span class="cx">           $posts3 = $this->q->query( array( 'post_parent__in' => array() ) );
</span><del>-               $this->assertEmpty( $posts3 );
</del><ins>+                $this->assertNotEmpty( $posts3 );
</ins><span class="cx">   }
</span><span class="cx"> 
</span><span class="cx">  function test_exlude_from_search_empty() {
</span><span class="lines">@@ -514,7 +517,7 @@
</span><span class="cx">          $this->assertEqualSets( array( $author_1, $author_2 ), $author_ids );
</span><span class="cx"> 
</span><span class="cx">          $posts = $this->q->query( array( 'author__in' => array() ) );
</span><del>-               $this->assertEmpty( $posts );
</del><ins>+                $this->assertNotEmpty( $posts );
</ins><span class="cx"> 
</span><span class="cx">          $posts = $this->q->query( array(
</span><span class="cx">                  'author__not_in' => array( $author_1, $author_2 ),
</span></span></pre></div>
<a id="trunktestsphpunitteststermqueryphp"></a>
<div class="modfile"><h4>Modified: trunk/tests/phpunit/tests/term/query.php (28782 => 28783)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/tests/phpunit/tests/term/query.php 2014-06-19 23:20:15 UTC (rev 28782)
+++ trunk/tests/phpunit/tests/term/query.php    2014-06-20 16:20:35 UTC (rev 28783)
</span><span class="lines">@@ -203,6 +203,9 @@
</span><span class="cx">          $this->assertEquals( array( $posts[0], $posts[3] ), $results2, 'Relation: AND; Operator: IN' );
</span><span class="cx">  }
</span><span class="cx"> 
</span><ins>+       /**
+        * @ticket 28099
+        */
</ins><span class="cx">   function test_empty__in() {
</span><span class="cx">          $cat_id = $this->factory->category->create();
</span><span class="cx">          $post_id = $this->factory->post->create();
</span><span class="lines">@@ -211,7 +214,7 @@
</span><span class="cx">          $q1 = get_posts( array( 'category__in' => array( $cat_id ) ) );
</span><span class="cx">          $this->assertNotEmpty( $q1 );
</span><span class="cx">          $q2 = get_posts( array( 'category__in' => array() ) );
</span><del>-               $this->assertEmpty( $q2 );
</del><ins>+                $this->assertNotEmpty( $q2 );
</ins><span class="cx"> 
</span><span class="cx">          $tag = wp_insert_term( 'woo', 'post_tag' );
</span><span class="cx">          $tag_id = $tag['term_id'];
</span><span class="lines">@@ -221,11 +224,11 @@
</span><span class="cx">          $q3 = get_posts( array( 'tag__in' => array( $tag_id ) ) );
</span><span class="cx">          $this->assertNotEmpty( $q3 );
</span><span class="cx">          $q4 = get_posts( array( 'tag__in' => array() ) );
</span><del>-               $this->assertEmpty( $q4 );
</del><ins>+                $this->assertNotEmpty( $q4 );
</ins><span class="cx"> 
</span><span class="cx">          $q5 = get_posts( array( 'tag_slug__in' => array( $slug ) ) );
</span><span class="cx">          $this->assertNotEmpty( $q5 );
</span><span class="cx">          $q6 = get_posts( array( 'tag_slug__in' => array() ) );
</span><del>-               $this->assertEmpty( $q6 );
</del><ins>+                $this->assertNotEmpty( $q6 );
</ins><span class="cx">   }
</span><span class="cx"> }
</span></span></pre>
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