diff --git a/NEWS b/NEWS
index 9a56421b..5c5272c4 100644
--- a/NEWS
+++ b/NEWS
@@ -15,6 +15,11 @@ NEWS ( CHANGELOG and HISTORY )                                     HTMLPurifier
   had both namespace and directive now have a single unified key.
 # Some configuration directives were renamed, specifically:
     %AutoFormatParam.PurifierLinkifyDocURL -> %AutoFormat.PurifierLinkify.DocURL
+    %FilterParam.ExtractStyleBlocksEscaping -> %Filter.ExtractStyleBlocks.Escaping
+    %FilterParam.ExtractStyleBlocksScope -> %Filter.ExtractStyleBlocks.Scope
+    %FilterParam.ExtractStyleBlocksTidyImpl -> %Filter.ExtractStyleBlocks.TidyImpl
+  As usual, the old directive names will still work, but will through E_NOTICE
+  errors.
 ! More robust support for name="" and id=""
 ! HTMLPurifier_Config::inherit($config) allows you to inherit one
   configuration, and have changes to that configuration be propagated
@@ -26,6 +31,8 @@ NEWS ( CHANGELOG and HISTORY )                                     HTMLPurifier
   tags that contain non-breaking spaces as well other whitespace. You
   can also modify which tags should have   maintained with
   %AutoFormat.RemoveEmpty.RemoveNbsp.Exceptions.
+. Created script maintenance/rename-config.php for renaming a configuration
+  directive while maintaining its alias.  This script does not change source code.
 
 3.3.0, released 2009-02-16
 ! Implement CSS property 'overflow' when %CSS.AllowTricky is true.
diff --git a/library/HTMLPurifier.php b/library/HTMLPurifier.php
index 64ae1487..27d0e726 100644
--- a/library/HTMLPurifier.php
+++ b/library/HTMLPurifier.php
@@ -152,6 +152,7 @@ class HTMLPurifier
         $filters = array();
         foreach ($filter_flags as $filter => $flag) {
             if (!$flag) continue;
+            if (strpos($filter, '.') !== false) continue;
             $class = "HTMLPurifier_Filter_$filter";
             $filters[] = new $class;
         }
diff --git a/library/HTMLPurifier/ConfigSchema/InterchangeBuilder.php b/library/HTMLPurifier/ConfigSchema/InterchangeBuilder.php
index e1a9a81c..d7df56ae 100644
--- a/library/HTMLPurifier/ConfigSchema/InterchangeBuilder.php
+++ b/library/HTMLPurifier/ConfigSchema/InterchangeBuilder.php
@@ -13,7 +13,6 @@ class HTMLPurifier_ConfigSchema_InterchangeBuilder
     }
 
     public static function buildFromDirectory($dir = null) {
-        $parser      = new HTMLPurifier_StringHashParser();
         $builder     = new HTMLPurifier_ConfigSchema_InterchangeBuilder();
         $interchange = new HTMLPurifier_ConfigSchema_Interchange();
 
@@ -33,15 +32,20 @@ class HTMLPurifier_ConfigSchema_InterchangeBuilder
 
         sort($files);
         foreach ($files as $file) {
-            $builder->build(
-                $interchange,
-                new HTMLPurifier_StringHash( $parser->parseFile($dir . $file) )
-            );
+            $builder->buildFile($interchange, $dir . $file);
         }
 
         return $interchange;
     }
 
+    public function buildFile($interchange, $file) {
+        $parser = new HTMLPurifier_StringHashParser();
+        $this->build(
+            $interchange,
+            new HTMLPurifier_StringHash( $parser->parseFile($dir . $file) )
+        );
+    }
+
     /**
      * Builds an interchange object based on a hash.
      * @param $interchange HTMLPurifier_ConfigSchema_Interchange object to build
diff --git a/library/HTMLPurifier/ConfigSchema/schema.ser b/library/HTMLPurifier/ConfigSchema/schema.ser
index 5dc9a5ac..81185b58 100644
Binary files a/library/HTMLPurifier/ConfigSchema/schema.ser and b/library/HTMLPurifier/ConfigSchema/schema.ser differ
diff --git a/library/HTMLPurifier/ConfigSchema/schema/FilterParam.ExtractStyleBlocksEscaping.txt b/library/HTMLPurifier/ConfigSchema/schema/Filter.ExtractStyleBlocks.Escaping.txt
similarity index 75%
rename from library/HTMLPurifier/ConfigSchema/schema/FilterParam.ExtractStyleBlocksEscaping.txt
rename to library/HTMLPurifier/ConfigSchema/schema/Filter.ExtractStyleBlocks.Escaping.txt
index d436ed01..16829bcd 100644
--- a/library/HTMLPurifier/ConfigSchema/schema/FilterParam.ExtractStyleBlocksEscaping.txt
+++ b/library/HTMLPurifier/ConfigSchema/schema/Filter.ExtractStyleBlocks.Escaping.txt
@@ -1,8 +1,8 @@
-FilterParam.ExtractStyleBlocksEscaping
+Filter.ExtractStyleBlocks.Escaping
 TYPE: bool
 VERSION: 3.0.0
 DEFAULT: true
-ALIASES: Filter.ExtractStyleBlocksEscaping
+ALIASES: Filter.ExtractStyleBlocksEscaping, FilterParam.ExtractStyleBlocksEscaping
 --DESCRIPTION--
 
 <p>
diff --git a/library/HTMLPurifier/ConfigSchema/schema/FilterParam.ExtractStyleBlocksScope.txt b/library/HTMLPurifier/ConfigSchema/schema/Filter.ExtractStyleBlocks.Scope.txt
similarity index 90%
rename from library/HTMLPurifier/ConfigSchema/schema/FilterParam.ExtractStyleBlocksScope.txt
rename to library/HTMLPurifier/ConfigSchema/schema/Filter.ExtractStyleBlocks.Scope.txt
index 3943529c..7f95f54d 100644
--- a/library/HTMLPurifier/ConfigSchema/schema/FilterParam.ExtractStyleBlocksScope.txt
+++ b/library/HTMLPurifier/ConfigSchema/schema/Filter.ExtractStyleBlocks.Scope.txt
@@ -1,8 +1,8 @@
-FilterParam.ExtractStyleBlocksScope
+Filter.ExtractStyleBlocks.Scope
 TYPE: string/null
 VERSION: 3.0.0
 DEFAULT: NULL
-ALIASES: Filter.ExtractStyleBlocksScope
+ALIASES: Filter.ExtractStyleBlocksScope, FilterParam.ExtractStyleBlocksScope
 --DESCRIPTION--
 
 <p>
diff --git a/library/HTMLPurifier/ConfigSchema/schema/FilterParam.ExtractStyleBlocksTidyImpl.txt b/library/HTMLPurifier/ConfigSchema/schema/Filter.ExtractStyleBlocks.TidyImpl.txt
similarity index 85%
rename from library/HTMLPurifier/ConfigSchema/schema/FilterParam.ExtractStyleBlocksTidyImpl.txt
rename to library/HTMLPurifier/ConfigSchema/schema/Filter.ExtractStyleBlocks.TidyImpl.txt
index cafccf8b..6c231b2d 100644
--- a/library/HTMLPurifier/ConfigSchema/schema/FilterParam.ExtractStyleBlocksTidyImpl.txt
+++ b/library/HTMLPurifier/ConfigSchema/schema/Filter.ExtractStyleBlocks.TidyImpl.txt
@@ -1,7 +1,8 @@
-FilterParam.ExtractStyleBlocksTidyImpl
+Filter.ExtractStyleBlocks.TidyImpl
 TYPE: mixed/null
 VERSION: 3.1.0
 DEFAULT: NULL
+ALIASES: FilterParam.ExtractStyleBlocksTidyImpl
 --DESCRIPTION--
 <p>
   If left NULL, HTML Purifier will attempt to instantiate a <code>csstidy</code>
diff --git a/library/HTMLPurifier/Filter/ExtractStyleBlocks.php b/library/HTMLPurifier/Filter/ExtractStyleBlocks.php
index 94dd598d..bbf78a66 100644
--- a/library/HTMLPurifier/Filter/ExtractStyleBlocks.php
+++ b/library/HTMLPurifier/Filter/ExtractStyleBlocks.php
@@ -38,7 +38,7 @@ class HTMLPurifier_Filter_ExtractStyleBlocks extends HTMLPurifier_Filter
      * @todo Extend to indicate non-text/css style blocks
      */
     public function preFilter($html, $config, $context) {
-        $tidy = $config->get('FilterParam.ExtractStyleBlocksTidyImpl');
+        $tidy = $config->get('Filter.ExtractStyleBlocks.TidyImpl');
         if ($tidy !== null) $this->_tidy = $tidy;
         $html = preg_replace_callback('#<style(?:\s.*)?>(.+)</style>#isU', array($this, 'styleCallback'), $html);
         $style_blocks = $this->_styleMatches;
@@ -62,7 +62,7 @@ class HTMLPurifier_Filter_ExtractStyleBlocks extends HTMLPurifier_Filter
      */
     public function cleanCSS($css, $config, $context) {
         // prepare scope
-        $scope = $config->get('FilterParam.ExtractStyleBlocksScope');
+        $scope = $config->get('Filter.ExtractStyleBlocks.Scope');
         if ($scope !== null) {
             $scopes = array_map('trim', explode(',', $scope));
         } else {
@@ -120,7 +120,7 @@ class HTMLPurifier_Filter_ExtractStyleBlocks extends HTMLPurifier_Filter
         $css = $this->_tidy->print->plain();
         // we are going to escape any special characters <>& to ensure
         // that no funny business occurs (i.e. </style> in a font-family prop).
-        if ($config->get('FilterParam.ExtractStyleBlocksEscaping')) {
+        if ($config->get('Filter.ExtractStyleBlocks.Escaping')) {
             $css = str_replace(
                 array('<',    '>',    '&'),
                 array('\3C ', '\3E ', '\26 '),
diff --git a/maintenance/rename-config.php b/maintenance/rename-config.php
new file mode 100644
index 00000000..6e59e2a7
--- /dev/null
+++ b/maintenance/rename-config.php
@@ -0,0 +1,84 @@
+#!/usr/bin/php
+<?php
+
+chdir(dirname(__FILE__));
+require_once 'common.php';
+require_once '../library/HTMLPurifier.auto.php';
+assertCli();
+
+/**
+ * @file
+ * Renames a configuration directive.  This involves renaming the file,
+ * adding an alias, and then regenerating the cache.  You still have to
+ * manually go through and fix any calls to the directive.
+ * @warning This script doesn't handle multi-stringhash files.
+ */
+
+$argv = $_SERVER['argv'];
+if (count($argv) < 3) {
+    echo "Usage: {$argv[0]} OldName NewName\n";
+    exit(1);
+}
+
+chdir('../library/HTMLPurifier/ConfigSchema/schema');
+
+$old = $argv[1];
+$new = $argv[2];
+
+if (!file_exists("$old.txt")) {
+    echo "Cannot move undefined configuration directive $old\n";
+    exit(1);
+}
+
+if ($old === $new) {
+    echo "Attempting to move to self, aborting\n";
+    exit(1);
+}
+
+if (file_exists("$new.txt")) {
+    echo "Cannot move to already defined directive $new\n";
+    exit(1);
+}
+
+$file = "$old.txt";
+$builder = new HTMLPurifier_ConfigSchema_InterchangeBuilder();
+$interchange = new HTMLPurifier_ConfigSchema_Interchange();
+$builder->buildFile($interchange, $file);
+$contents = file_get_contents($file);
+
+if (strpos($contents, "\r\n") !== false) {
+    $nl = "\r\n";
+} elseif (strpos($contents, "\r") !== false) {
+    $nl = "\r";
+} else {
+    $nl = "\n";
+}
+
+// replace name with new name
+$contents = str_replace($old, $new, $contents);
+
+if ($interchange->directives[$old]->aliases) {
+    $pos_alias = strpos($contents, 'ALIASES:');
+    $pos_ins = strpos($contents, $nl, $pos_alias);
+    if ($pos_ins === false) $pos_ins = strlen($contents);
+    $contents =
+        substr($contents, 0, $pos_ins) . ", $old" . substr($contents, $pos_ins);
+    file_put_contents($file, $contents);
+} else {
+    $lines = explode($nl, $contents);
+    $insert = false;
+    foreach ($lines as $n => $line) {
+        if (strncmp($line, '--', 2) === 0) {
+            $insert = $n;
+            break;
+        }
+    }
+    if (!$insert) {
+        $lines[] = "ALIASES: $old";
+    } else {
+        array_splice($lines, $insert, 0, "ALIASES: $old");
+    }
+    file_put_contents($file, implode($nl, $lines));
+}
+
+rename("$old.txt", "$new.txt") || exit(1);
diff --git a/tests/HTMLPurifier/Filter/ExtractStyleBlocksTest.php b/tests/HTMLPurifier/Filter/ExtractStyleBlocksTest.php
index 51499c60..9c26d4c9 100644
--- a/tests/HTMLPurifier/Filter/ExtractStyleBlocksTest.php
+++ b/tests/HTMLPurifier/Filter/ExtractStyleBlocksTest.php
@@ -23,7 +23,7 @@ class HTMLPurifier_Filter_ExtractStyleBlocksTest extends HTMLPurifier_Harness
     function assertExtractStyleBlocks($html, $expect = true, $styles = array()) {
         $filter = new HTMLPurifier_Filter_ExtractStyleBlocks(); // disable cleaning
         if ($expect === true) $expect = $html;
-        $this->config->set('FilterParam.ExtractStyleBlocksTidyImpl', false);
+        $this->config->set('Filter.ExtractStyleBlocks.TidyImpl', false);
         $result = $filter->preFilter($html, $this->config, $this->context);
         $this->assertIdentical($result, $expect);
         $this->assertIdentical($this->context->get('StyleBlocks'), $styles);
@@ -104,14 +104,14 @@ class HTMLPurifier_Filter_ExtractStyleBlocksTest extends HTMLPurifier_Harness
     }
 
     function test_cleanCSS_noEscapeCodes() {
-        $this->config->set('FilterParam.ExtractStyleBlocksEscaping', false);
+        $this->config->set('Filter.ExtractStyleBlocks.Escaping', false);
         $this->assertCleanCSS(
             ".class {\nfont-family:'</style>';\n}"
         );
     }
 
     function test_cleanCSS_scope() {
-        $this->config->set('FilterParam.ExtractStyleBlocksScope', '#foo');
+        $this->config->set('Filter.ExtractStyleBlocks.Scope', '#foo');
         $this->assertCleanCSS(
             "p {\ntext-indent:1em;\n}",
             "#foo p {\ntext-indent:1em;\n}"
@@ -119,7 +119,7 @@ class HTMLPurifier_Filter_ExtractStyleBlocksTest extends HTMLPurifier_Harness
     }
 
     function test_cleanCSS_scopeWithSelectorCommas() {
-        $this->config->set('FilterParam.ExtractStyleBlocksScope', '#foo');
+        $this->config->set('Filter.ExtractStyleBlocks.Scope', '#foo');
         $this->assertCleanCSS(
             "b, i {\ntext-decoration:underline;\n}",
             "#foo b, #foo i {\ntext-decoration:underline;\n}"
@@ -127,17 +127,17 @@ class HTMLPurifier_Filter_ExtractStyleBlocksTest extends HTMLPurifier_Harness
     }
 
     function test_cleanCSS_scopeWithNaughtySelector() {
-        $this->config->set('FilterParam.ExtractStyleBlocksScope', '#foo');
+        $this->config->set('Filter.ExtractStyleBlocks.Scope', '#foo');
         $this->assertCleanCSS("  + p {\ntext-indent:1em;\n}", '');
     }
 
     function test_cleanCSS_scopeWithMultipleNaughtySelectors() {
-        $this->config->set('FilterParam.ExtractStyleBlocksScope', '#foo');
+        $this->config->set('Filter.ExtractStyleBlocks.Scope', '#foo');
         $this->assertCleanCSS("  ++ ++ p {\ntext-indent:1em;\n}", '');
     }
 
     function test_cleanCSS_scopeWithCommas() {
-        $this->config->set('FilterParam.ExtractStyleBlocksScope', '#foo, .bar');
+        $this->config->set('Filter.ExtractStyleBlocks.Scope', '#foo, .bar');
         $this->assertCleanCSS(
             "p {\ntext-indent:1em;\n}",
             "#foo p, .bar p {\ntext-indent:1em;\n}"
@@ -145,7 +145,7 @@ class HTMLPurifier_Filter_ExtractStyleBlocksTest extends HTMLPurifier_Harness
     }
 
     function test_cleanCSS_scopeAllWithCommas() {
-        $this->config->set('FilterParam.ExtractStyleBlocksScope', '#foo, .bar');
+        $this->config->set('Filter.ExtractStyleBlocks.Scope', '#foo, .bar');
         $this->assertCleanCSS(
             "p, div {\ntext-indent:1em;\n}",
             "#foo p, #foo div, .bar p, .bar div {\ntext-indent:1em;\n}"
@@ -153,7 +153,7 @@ class HTMLPurifier_Filter_ExtractStyleBlocksTest extends HTMLPurifier_Harness
     }
 
     function test_cleanCSS_scopeWithConflicts() {
-        $this->config->set('FilterParam.ExtractStyleBlocksScope', 'p');
+        $this->config->set('Filter.ExtractStyleBlocks.Scope', 'p');
         $this->assertCleanCSS(
 "div {
 text-align:right;