Index: category-template.php
===================================================================
--- category-template.php	(revision 20356)
+++ category-template.php	(working copy)
@@ -390,8 +390,9 @@
  * in the category.
  *     'hide_empty' (bool|int) default is 1 - Whether to hide categories that
  * don't have any posts attached to them.
- *     'use_desc_for_title' (bool|int) default is 1 - Whether to use the
- * description instead of the category title.
+ *     'use_desc_for_title' (string) default is 'desc' - Control title attributes
+ * of category links. 'desc' => Output cat descriptions; 'viewall' => Output
+ * 'View all posts filed under @category'; 'none' => Does not output titles.
  *     'feed' - See {@link get_categories()}.
  *     'feed_type' - See {@link get_categories()}.
  *     'feed_image' - See {@link get_categories()}.
@@ -415,7 +416,7 @@
 		'orderby' => 'name', 'order' => 'ASC',
 		'style' => 'list',
 		'show_count' => 0, 'hide_empty' => 1,
-		'use_desc_for_title' => 1, 'child_of' => 0,
+		'use_desc_for_title' => 'desc', 'child_of' => 0,
 		'feed' => '', 'feed_type' => '',
 		'feed_image' => '', 'exclude' => '',
 		'exclude_tree' => '', 'current_category' => 0,
@@ -826,10 +827,12 @@
 		$cat_name = esc_attr( $category->name );
 		$cat_name = apply_filters( 'list_cats', $cat_name, $category );
 		$link = '<a href="' . esc_attr( get_term_link($category) ) . '" ';
-		if ( $use_desc_for_title == 0 || empty($category->description) )
+		if ( $use_desc_for_title === 'desc' )
+			$link .= 'title="' . esc_attr( strip_tags( apply_filters( 'category_description', $category->description, $category ) ) ) . '"';
+		elseif ( $use_desc_for_title === 'viewall' )
 			$link .= 'title="' . esc_attr( sprintf(__( 'View all posts filed under %s' ), $cat_name) ) . '"';
-		else
-			$link .= 'title="' . esc_attr( strip_tags( apply_filters( 'category_description', $category->description, $category ) ) ) . '"';
+		elseif ( $use_desc_for_title === 'none' )
+			$link = $link;
 		$link .= '>';
 		$link .= $cat_name . '</a>';
 
Index: deprecated.php
===================================================================
--- deprecated.php	(revision 20356)
+++ deprecated.php	(working copy)
@@ -622,7 +622,7 @@
  * @param int $optiondates
  * @param int $optioncount
  * @param int $hide_empty
- * @param int $use_desc_for_title
+ * @param string $use_desc_for_title
  * @param bool $children
  * @param int $child_of
  * @param int $categories
@@ -634,7 +634,7 @@
  * @return unknown
  */
 function list_cats($optionall = 1, $all = 'All', $sort_column = 'ID', $sort_order = 'asc', $file = '', $list = true, $optiondates = 0,
-				   $optioncount = 0, $hide_empty = 1, $use_desc_for_title = 1, $children=false, $child_of=0, $categories=0,
+				   $optioncount = 0, $hide_empty = 1, $use_desc_for_title = 'desc', $children=false, $child_of=0, $categories=0,
 				   $recurse=0, $feed = '', $feed_image = '', $exclude = '', $hierarchical=false) {
 	_deprecated_function( __FUNCTION__, '2.1', 'wp_list_categories()' );