[wp-trac] [WordPress Trac] #14529: wp_nav_menu() gives different results when called multiple times - reproducable

[WordPress Trac]

#14529: wp_nav_menu() gives different results when called multiple times -
reproducable
--------------------------+-------------------------------------------------
 Reporter:  juggledad     |       Owner:                 
     Type:  defect (bug)  |      Status:  new            
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Menus         |     Version:  3.0.1          
 Severity:  normal        |    Keywords:                 
--------------------------+-------------------------------------------------
 If you call wp_nav_menu() with the same parameters twice, you get
 different results.

 To reproduce
 1) use the TwentyTen theme
 2) add two categories: CAT-PARENT and CAT-CHILD
 3) add two pages: PAGE-PARENT and PAGE-CHILD
 4) add a menu, add the two categories and two pages and adjust them so the
 children are under the parents
 5) edit the header.php from twentyten and after line 67 (which should be
 '                       </div><!-- #branding -->'
 add
 <?php
 echo '<strong>wp_nav_menu=<br></strong>';
 wp_nav_menu( array( 'container_class' => 'menu-xxx', 'theme_location' =>
 'primary' ) );
         echo '<strong>END wp_nav_menu<br></strong>';
 ?>
 <?php
 echo '<strong>wp_nav_menu=<br></strong>';
 wp_nav_menu( array( 'container_class' => 'menu-xxx', 'theme_location' =>
 'primary' ) );
 echo '<strong>END wp_nav_menu<br></strong>';
 ?>
 6) view the site and the generated source
 This is the output of the two calls to wp_nav_menu():

 First call results

 <strong>wp_nav_menu=<br></strong>
 <div class="menu-xxx">
         <ul id="menu-cat_test" class="menu">
                 <li id="menu-item-1408" class="menu-item menu-item-type-
 taxonomy menu-item-1408">
                         <a href="http://wp301/?cat=3">CAT-PARENT</a>
                         <ul class="sub-menu">
                                 <li id="menu-item-1409" class="menu-item
 menu-item-type-taxonomy menu-item-1409">
                                         <a href="http://wp301/?cat=8">CAT-
 CHILD</a></li>
                         </ul>
                 </li>
                 <li id="menu-item-1413" class="menu-item menu-item-type-
 post_type menu-item-1413">
                         <a href="http://wp301/?page_id=3">PAGE-PARENT</a>
                         <ul class="sub-menu">
                                 <li id="menu-item-1411" class="menu-item
 menu-item-type-post_type menu-item-1411">
                                         <a href="http://wp301/?page_id=7
 ">PAGE-CHILD</a>
                                 </li>
                         </ul>
                 </li>
         </ul>
 </div>
 <strong>END wp_nav_menu=<br></strong>

 second call result

 <strong>wp_nav_menu=<br></strong>
 <div class="menu-xxx">
         <ul id="menu-cat_test-1" class="menu">
                 <li class="menu-item menu-item-type-taxonomy menu-
 item-1408">
                         <a href="http://wp301/?cat=3">CAT-PARENT</a>
                         <ul class="sub-menu">
                                 <li class="menu-item menu-item-type-
 taxonomy menu-item-1409">
                                         <a href="http://wp301/?cat=8">CAT-
 CHILD</a></li>
                         </ul>
                 </li>
                 <li class="menu-item menu-item-type-post_type menu-
 item-1413"><a href="http://wp301/?page_id=3">PAGE-PARENT</a>
                         <ul class="sub-menu">
                                 <li class="menu-item menu-item-type-
 post_type menu-item-1411">
                                         <a href="http://wp301/?page_id=7
 ">PAGE-CHILD</a></li>
                         </ul>
                 </li>
         </ul>
 </div>
 <strong>END wp_nav_menu=<br></strong>

 notice that the <li> in the first call have an id="menu-item-nnnn" and the
 second call doesn't have that. I know that an ID can only happen once in a
 page, but since there is a class with the same value, it would seem that
 neithor call should have an id="..." returned to be consistant.

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Ticket URL: <http://core.trac.wordpress.org/ticket/14529>
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