Index: wp-admin/wp-admin.css
===================================================================
--- wp-admin/wp-admin.css	(revision 6793)
+++ wp-admin/wp-admin.css	(working copy)
@@ -1053,6 +1053,7 @@
 }
 #edit-slug-box strong {color: #777;}
 #editable-post-name {background-color: #FFFBCC;}
+#editable-post-name-full {display: none;}
 #editable-post-name input {width: 16em;}
 #edit-slug-buttons a.save {
 	background-color: #ebebeb;
Index: wp-admin/includes/post.php
===================================================================
--- wp-admin/includes/post.php	(revision 6793)
+++ wp-admin/includes/post.php	(working copy)
@@ -555,11 +555,13 @@
 	if (false === strpos($permalink, '%postname%')) {
 		return '';
 	}
-	$title = __('You can edit this part of the permalink using the Edit button on the right');
+	$title = __('Click to edit this part of the permalink');
 	if (strlen($post_name) > 30) {
-		$post_name = substr($post_name, 0, 14). '…' . substr($post_name, -14);
+		$post_name_abridged = substr($post_name, 0, 14). '…' . substr($post_name, -14);
+	} else {
+		$post_name_abridged = $post_name;
 	}
-	$post_name_html = '<span id="editable-post-name" title="'.$title.'">'.$post_name.'</span>';
+	$post_name_html = '<span id="editable-post-name" title="'.$title.'">'.$post_name_abridged.'</span><span id="editable-post-name-full">'.$post_name.'</span>';
 	$display_link = str_replace('%postname%', $post_name_html, $permalink);
 	return $display_link;
 }
Index: wp-admin/js/slug.js
===================================================================
--- wp-admin/js/slug.js	(revision 6793)
+++ wp-admin/js/slug.js	(working copy)
@@ -3,9 +3,10 @@
 	var e = jQuery('#editable-post-name');
 	var revert_e = e.html();	
 	var real_slug = jQuery('#post_name');
+	var revert_slug = real_slug.html();
 	var b = jQuery('#edit-slug-buttons');
 	var revert_b = b.html();
-	var old_slug = e.children('span').html();
+	var full = jQuery('#editable-post-name-full').html();
 
 	b.html('<a href="" class="save">'+slugL10n.save+'</a> <a class="cancel" href="">'+slugL10n.cancel+'</a>');
 	b.children('.save').click(function() {
@@ -25,13 +26,13 @@
 	jQuery('#edit-slug-buttons .cancel').click(function() {
 		e.html(revert_e);
 		b.html(revert_b);
-		real_slug.attr('value', revert_e);
+		real_slug.attr('value', revert_slug);
 		return false;
 	});
-	for(i=0; i < revert_e.length; ++i) {
-		if ('%' == revert_e.charAt(i)) c++;
+	for(i=0; i < full.length; ++i) {
+		if ('%' == full.charAt(i)) c++;
 	}
-	slug_value = (c > revert_e.length/4)? '' : revert_e;
+	slug_value = (c > full.length/4)? '' : full;
 	e.html('<input type="text" id="new-post-slug" value="'+slug_value+'" />').children('input').keypress(function(e){
 		var key = e.charCode ? e.charCode : e.keyCode ? e.keyCode : 0;
 		// on enter, just save the new slug, don't save the post