? modules/syndication
Index: modules/filter/filter.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/filter/filter.module,v
retrieving revision 1.234
diff -u -p -r1.234 filter.module
--- modules/filter/filter.module	15 Nov 2008 11:45:03 -0000	1.234
+++ modules/filter/filter.module	17 Nov 2008 06:43:49 -0000
@@ -388,6 +388,17 @@ function filter_list_format($format) {
 }
 
 /**
+ * Implementation of hook_modules_uninstalled().
+ *
+ * Remove the filters of uninstalled modules.
+ */
+function filter_modules_uninstalled($modules) {
+  db_delete('filters')
+    ->condition('module', $modules, 'IN')
+    ->execute();
+}
+
+/**
  * @name Filtering functions
  * @{
  * Modules which need to have content filtered can use these functions to