root/trunk/wp-admin/edit-tags.php

<?php
/**
 * Edit Tags Administration Panel.
 *
 * @package WordPress
 * @subpackage Administration
 */

/** WordPress Administration Bootstrap */
require_once('admin.php');

$title = __('Tags');

wp_reset_vars(array('action', 'tag'));

if ( $_GET['action'] == 'delete' && isset($_GET['delete_tags']) )
    $action = 'bulk-delete';

switch($action) {

case 'addtag':

    check_admin_referer('add-tag');

    if ( !current_user_can('manage_categories') )
        wp_die(__('Cheatin&#8217; uh?'));

    $ret = wp_insert_term($_POST['name'], 'post_tag', $_POST);
    if ( $ret && !is_wp_error( $ret ) ) {
        wp_redirect('edit-tags.php?message=1#addtag');
    } else {
        wp_redirect('edit-tags.php?message=4#addtag');
    }
    exit;
break;

case 'delete':
    $tag_ID = (int) $_GET['tag_ID'];
    check_admin_referer('delete-tag_' .  $tag_ID);

    if ( !current_user_can('manage_categories') )
        wp_die(__('Cheatin&#8217; uh?'));

    wp_delete_term( $tag_ID, 'post_tag');

    wp_redirect('edit-tags.php?message=2');
    exit;

break;

case 'bulk-delete':
    check_admin_referer('bulk-tags');

    if ( !current_user_can('manage_categories') )
        wp_die(__('Cheatin&#8217; uh?'));

    $tags = $_GET['delete_tags'];
    foreach( (array) $tags as $tag_ID ) {
        wp_delete_term( $tag_ID, 'post_tag');
    }

    $location = 'edit-tags.php';
    if ( $referer = wp_get_referer() ) {
        if ( false !== strpos($referer, 'edit-tags.php') )
            $location = $referer;
    }

    $location = add_query_arg('message', 6, $location);
    wp_redirect($location);
    exit;

break;

case 'edit':

    require_once ('admin-header.php');
    $tag_ID = (int) $_GET['tag_ID'];

    $tag = get_term($tag_ID, 'post_tag', OBJECT, 'edit');
    include('edit-tag-form.php');

break;

case 'editedtag':
    $tag_ID = (int) $_POST['tag_ID'];
    check_admin_referer('update-tag_' . $tag_ID);

    if ( !current_user_can('manage_categories') )
        wp_die(__('Cheatin&#8217; uh?'));

    $ret = wp_update_term($tag_ID, 'post_tag', $_POST);

    $location = 'edit-tags.php';
    if ( $referer = wp_get_original_referer() ) {
        if ( false !== strpos($referer, 'edit-tags.php') )
            $location = $referer;
    }

    if ( $ret && !is_wp_error( $ret ) )
        $location = add_query_arg('message', 3, $location);
    else
        $location = add_query_arg('message', 5, $location);

    wp_redirect($location);
    exit;
break;

default:

if ( !empty($_GET['_wp_http_referer']) ) {
     wp_redirect(remove_query_arg(array('_wp_http_referer', '_wpnonce'), stripslashes($_SERVER['REQUEST_URI'])));
     exit;
}

wp_enqueue_script( 'admin-tags' );
wp_enqueue_script('admin-forms');

require_once ('admin-header.php');

$messages[1] = __('Tag added.');
$messages[2] = __('Tag deleted.');
$messages[3] = __('Tag updated.');
$messages[4] = __('Tag not added.');
$messages[5] = __('Tag not updated.');
$messages[6] = __('Tags deleted.');
?>

<?php if (isset($_GET['message'])) : ?>
<div id="message" class="updated fade"><p><?php echo $messages[$_GET['message']]; ?></p></div>
<?php $_SERVER['REQUEST_URI'] = remove_query_arg(array('message'), $_SERVER['REQUEST_URI']);
endif; ?>

<div class="wrap">

<form id="posts-filter" action="" method="get">
    <h2><?php printf( current_user_can('manage_categories') ? __('Tags (<a href="%s">Add New</a>)') : __('Manage Tags'), '#addtag' ); ?></h2>

<p id="post-search">
    <label class="hidden" for="post-search-input"><?php _e( 'Search Tags' ); ?>:</label>
    <input type="text" id="post-search-input" name="s" value="<?php echo attribute_escape(stripslashes($_GET['s'])); ?>" />
    <input type="submit" value="<?php _e( 'Search Tags' ); ?>" class="button" />
</p>

<br class="clear" />

<div class="tablenav">

<?php
$pagenum = absint( $_GET['pagenum'] );
if ( empty($pagenum) )
    $pagenum = 1;
if( !$tagsperpage || $tagsperpage < 0 )
    $tagsperpage = 20;

$page_links = paginate_links( array(
    'base' => add_query_arg( 'pagenum', '%#%' ),
    'format' => '',
    'total' => ceil(wp_count_terms('post_tag') / $tagsperpage),
    'current' => $pagenum
));

if ( $page_links )
    echo "<div class='tablenav-pages'>$page_links</div>";
?>

<div class="alignleft">
<select name="action">
<option value="" selected><?php _e('Actions'); ?></option>
<option value="delete"><?php _e('Delete'); ?></option>
</select>
<input type="submit" value="<?php _e('Apply'); ?>" name="doaction" class="button-secondary action" />
<?php wp_nonce_field('bulk-tags'); ?>
</div>

<br class="clear" />
</div>

<br class="clear" />

<table class="widefat">
    <thead>
    <tr>
    <th scope="col" class="check-column"><input type="checkbox" /></th>
        <th scope="col"><?php _e('Name') ?></th>
        <th scope="col" class="num" style="width: 90px"><?php _e('Posts') ?></th>
    </tr>
    </thead>
    <tbody id="the-list" class="list:tag">
<?php

$searchterms = trim( $_GET['s'] );

$count = tag_rows( $pagenum, $tagsperpage, $searchterms );
?>
    </tbody>
</table>
</form>

<div class="tablenav">

<?php
if ( $page_links )
    echo "<div class='tablenav-pages'>$page_links</div>";
?>
<br class="clear" />
</div>
<br class="clear" />

</div>

<?php if ( current_user_can('manage_categories') ) : ?>

<br />
<?php include('edit-tag-form.php'); ?>

<?php endif; ?>

<?php
break;
}

include('admin-footer.php');

?>