Index: wp-includes/user.php
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- wp-includes/user.php	(revision 38587)
+++ wp-includes/user.php	(revision )
@@ -1015,14 +1015,14 @@
 		'show' => 'display_name', 'echo' => 1,
 		'selected' => 0, 'name' => 'user', 'class' => '', 'id' => '',
 		'blog_id' => get_current_blog_id(), 'who' => '', 'include_selected' => false,
-		'option_none_value' => -1
+		'option_none_value' => -1, 'role__in' => '', 'role__not_in' => ''
 	);
 
 	$defaults['selected'] = is_author() ? get_query_var( 'author' ) : 0;
 
 	$r = wp_parse_args( $args, $defaults );
 
-	$query_args = wp_array_slice_assoc( $r, array( 'blog_id', 'include', 'exclude', 'orderby', 'order', 'who' ) );
+	$query_args = wp_array_slice_assoc( $r, array( 'blog_id', 'include', 'exclude', 'orderby', 'order', 'role__in', 'role__not_in', 'who' ) );
 
 	$fields = array( 'ID', 'user_login' );