Add per page screen option for tags

git-svn-id: http://svn.automattic.com/wordpress/trunk@10909 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/admin-ajax.php

@@ -1041,6 +1041,7 @@ case 'set-screen-option':
 		case 'edit_comments_per_page':
 		case 'upload_per_page':
 		case 'categories_per_page':
+		case 'edit_tags_per_page':
 			$value = (int) $value;
 			if ( $value < 1 || $value > 999 )
 				die(-1);

wp-admin/edit-tags.php

@@ -177,14 +177,18 @@ $pagenum = isset( $_GET['pagenum'] ) ? absint( $_GET['pagenum'] ) : 0;
 if ( empty($pagenum) )
 	$pagenum = 1;
 
-$tagsperpage = apply_filters("tagsperpage",20);
+$tags_per_page = get_user_option('edit_tags_per_page');
+if ( empty($tags_per_page) )
+	$tags_per_page = 20;
+$tags_per_page = apply_filters('edit_tags_per_page', $tags_per_page);
+$tags_per_page = apply_filters('tagsperpage', $tags_per_page); // Old filter
 
 $page_links = paginate_links( array(
 	'base' => add_query_arg( 'pagenum', '%#%' ),
 	'format' => '',
 	'prev_text' => __('«'),
 	'next_text' => __('»'),
-	'total' => ceil(wp_count_terms($taxonomy) / $tagsperpage),
+	'total' => ceil(wp_count_terms($taxonomy) / $tags_per_page),
 	'current' => $pagenum
 ));
 
@@ -224,7 +228,7 @@ if ( $page_links )
 
 $searchterms = isset( $_GET['s'] ) ? trim( $_GET['s'] ) : '';
 
-$count = tag_rows( $pagenum, $tagsperpage, $searchterms, $taxonomy );
+$count = tag_rows( $pagenum, $tags_per_page, $searchterms, $taxonomy );
 ?>
 	</tbody>
 </table>

wp-admin/includes/template.php

@@ -3526,6 +3526,9 @@ function screen_options($screen) {
 		case 'categories':
 			$per_page_label = __('Categories per page:');
 			break;
+		case 'edit-tags':
+			$per_page_label = __('Tags per page:');
+			break;
 		default:
 			return '';
 	}