? drupal-6.x-dev/sites/default/settings.php
Index: drupal-6.x-dev/modules/system/system.install
===================================================================
RCS file: /cvs/drupal/drupal/modules/system/system.install,v
retrieving revision 1.175
diff -u -p -r1.175 system.install
--- drupal-6.x-dev/modules/system/system.install	11 Nov 2007 08:48:22 -0000	1.175
+++ drupal-6.x-dev/modules/system/system.install	13 Nov 2007 07:13:29 -0000
@@ -268,7 +268,7 @@ function system_install() {
   // presumed to be a serialized array. Install will change uid 1 immediately
   // anyways. So we insert the superuser here, the uid is 2 here for now, but
   // very soon it will be changed to 1.
-  db_query("INSERT INTO {users} (name, mail, created, data) VALUES('%s', '%s', %d, '%s')", 'placeholder-for-uid-1', 'placeholder-for-uid-1', time(), serialize(array()));
+  db_query("INSERT INTO {users} (name, name_lower, mail, created, data) VALUES('%s', '%s', '%s', %d, '%s')", 'placeholder-for-uid-1', 'placeholder-for-uid-1', 'placeholder-for-uid-1', time(), serialize(array()));
   // This sets the above two users to 1 -1 = 0 (anonymous) and
   // 2- 1 = 1 (superuser). We skip uid 2 but that's not a big problem.
   db_query('UPDATE {users} SET uid = uid - 1');
Index: drupal-6.x-dev/modules/taxonomy/taxonomy.install
===================================================================
RCS file: /cvs/drupal/drupal/modules/taxonomy/taxonomy.install,v
retrieving revision 1.4
diff -u -p -r1.4 taxonomy.install
--- drupal-6.x-dev/modules/taxonomy/taxonomy.install	21 Oct 2007 18:59:02 -0000	1.4
+++ drupal-6.x-dev/modules/taxonomy/taxonomy.install	13 Nov 2007 07:13:29 -0000
@@ -28,6 +28,13 @@ function taxonomy_schema() {
         'default' => '',
         'description' => t('The term name.'),
       ),
+      'name_lower' => array(
+        'type' => 'varchar',
+        'length' => 255,
+        'not null' => TRUE,
+        'default' => '',
+        'description' => t('The term name in lowercase.'),
+      ),
       'description' => array(
         'type' => 'text',
         'not null' => FALSE,
@@ -43,7 +50,10 @@ function taxonomy_schema() {
       ),
     ),
     'primary key' => array('tid'),
-    'indexes' => array('vid' => array('vid')),
+    'indexes' => array(
+      'vid' => array('vid'),
+      'name_lower' => array('name_lower')
+    ),
   );
 
   $schema['term_hierarchy'] = array(
@@ -274,3 +284,14 @@ function taxonomy_schema() {
   return $schema;
 }
 
+/**
+ * Add a name_lower field to term_data table, folk from name, and convert it to
+ * lower case.
+ */
+function taxonomy_update_6000() {
+  $ret = array();
+  db_add_field($ret, 'term_data', 'name_lower', array('type' => 'varchar', 'length' => 255, 'not null' => TRUE, 'default' => '', 'description' => t('The term name in lowercase.')));
+  $ret[] = update_sql('UPDATE {term_data} SET name_lower = LOWER(name)');
+  db_add_unique_key($ret, 'term_data', 'name_lower', array('name_lower'));
+  return $ret;
+}
Index: drupal-6.x-dev/modules/taxonomy/taxonomy.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/taxonomy/taxonomy.module,v
retrieving revision 1.389
diff -u -p -r1.389 taxonomy.module
--- drupal-6.x-dev/modules/taxonomy/taxonomy.module	11 Nov 2007 06:56:44 -0000	1.389
+++ drupal-6.x-dev/modules/taxonomy/taxonomy.module	13 Nov 2007 07:13:30 -0000
@@ -238,6 +238,7 @@ function taxonomy_save_term(&$form_value
 
   if (!empty($form_values['tid']) && $form_values['name']) {
     drupal_write_record('term_data', $form_values, 'tid');
+    db_query("UPDATE {term_data} SET name_lower = LOWER(name) WHERE tid = %d", $form_values['tid']);
     $hook = 'update';
     $status = SAVED_UPDATED;
   }
@@ -246,6 +247,7 @@ function taxonomy_save_term(&$form_value
   }
   else {
     drupal_write_record('term_data', $form_values);
+    db_query("UPDATE {term_data} SET name_lower = LOWER(name) WHERE tid = %d", $form_values['tid']);
     $hook = 'insert';
     $status = SAVED_NEW;
   }
@@ -832,7 +834,7 @@ function _taxonomy_term_children($tid) {
  *   An array of matching term objects.
  */
 function taxonomy_get_term_by_name($name) {
-  $db_result = db_query(db_rewrite_sql("SELECT t.tid, t.* FROM {term_data} t WHERE LOWER(t.name) LIKE LOWER('%s')", 't', 'tid'), trim($name));
+  $db_result = db_query(db_rewrite_sql("SELECT t.tid, t.* FROM {term_data} t WHERE t.name_lower LIKE LOWER('%s')", 't', 'tid'), trim($name));
   $result = array();
   while ($term = db_fetch_object($db_result)) {
     $result[] = $term;
Index: drupal-6.x-dev/modules/user/user.install
===================================================================
RCS file: /cvs/drupal/drupal/modules/user/user.install,v
retrieving revision 1.3
diff -u -p -r1.3 user.install
--- drupal-6.x-dev/modules/user/user.install	4 Nov 2007 14:33:07 -0000	1.3
+++ drupal-6.x-dev/modules/user/user.install	13 Nov 2007 07:13:30 -0000
@@ -142,6 +142,13 @@ function user_schema() {
         'default' => '',
         'description' => t('Unique user name.'),
       ),
+      'name_lower' => array(
+        'type' => 'varchar',
+        'length' => 60,
+        'not null' => TRUE,
+        'default' => '',
+        'description' => t('User name in lowercase.'),
+      ),
       'pass' => array(
         'type' => 'varchar',
         'length' => 32,
@@ -254,7 +261,10 @@ function user_schema() {
       'access' => array('access'),
       'created' => array('created')
     ),
-    'unique keys' => array('name' => array('name')),
+    'unique keys' => array(
+      'name' => array('name'),
+      'name_lower' => array('name_lower')
+    ),
     'primary key' => array('uid'),
   );
 
@@ -282,3 +292,14 @@ function user_schema() {
   return $schema;
 }
 
+/**
+ * Add a name_lower field to users table, folk from name, and convert it to
+ * lower case.
+ */
+function user_update_6000() {
+  $ret = array();
+  db_add_field($ret, 'users', 'name_lower', array('type' => 'varchar', 'length' => 60, 'not null' => TRUE, 'default' => '', 'description' => t('User name in lowercase.')));
+  $ret[] = update_sql('UPDATE {users} SET name_lower = LOWER(name)');
+  db_add_unique_key($ret, 'users', 'name_lower', array('name_lower'));
+  return $ret;
+}
Index: drupal-6.x-dev/modules/user/user.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/user/user.module,v
retrieving revision 1.862
diff -u -p -r1.862 user.module
--- drupal-6.x-dev/modules/user/user.module	6 Nov 2007 12:20:14 -0000	1.862
+++ drupal-6.x-dev/modules/user/user.module	13 Nov 2007 07:13:30 -0000
@@ -144,17 +144,23 @@ function user_load($array = array()) {
   }
 
   foreach ($array as $key => $value) {
-    if ($key == 'uid' || $key == 'status') {
-      $query[] = "$key = %d";
-      $params[] = $value;
-    }
-    else if ($key == 'pass') {
-      $query[] = "pass = '%s'";
-      $params[] = md5($value);
-    }
-    else {
-      $query[]= "LOWER($key) = LOWER('%s')";
-      $params[] = $value;
+    switch ($key) {
+      case 'uid':
+      case 'status':
+        $query[] = "$key = %d";
+        $params[] = $value;
+        break;
+      case 'pass':
+        $query[] = "pass = '%s'";
+        $params[] = md5($value);
+        break;
+      case 'name':
+        $query[]= "name_lower = LOWER('%s')";
+        $params[] = $value;
+        break;
+      default:
+        $query[]= "LOWER($key) = LOWER('%s')";
+        $params[] = $value;
     }
   }
   $result = db_query('SELECT * FROM {users} u WHERE '. implode(' AND ', $query), $params);
@@ -216,6 +222,10 @@ function user_save($account, $array = ar
       else if ((substr($key, 0, 4) !== 'auth') && ($key != 'pass')) {
         if (in_array($key, $user_fields)) {
           // Save standard fields
+          if ($key == 'name') {
+            $query .= "name_lower = LOWER('%s'), ";
+            $v[] = $value;
+          }
           $query .= "$key = '%s', ";
           $v[] = $value;
         }
@@ -297,6 +307,14 @@ function user_save($account, $array = ar
           $values[] = $value;
           $s[] = "%d";
           break;
+        case 'name':
+          $fields[] = $key;
+          $values[] = $value;
+          $s[] = "'%s'";
+          $fields[] = 'name_lower';
+          $values[] = $value;
+          $s[] = "LOWER('%s')";
+          break;
         default:
           if (substr($key, 0, 4) !== 'auth' && in_array($key, $user_fields)) {
             $fields[] = $key;
@@ -489,7 +507,7 @@ function user_access($string, $account =
  * @return boolean TRUE for blocked users, FALSE for active
  */
 function user_is_blocked($name) {
-  $deny  = db_fetch_object(db_query("SELECT name FROM {users} WHERE status = 0 AND name = LOWER('%s')", $name));
+  $deny  = db_fetch_object(db_query("SELECT name FROM {users} WHERE status = 0 AND name_lower = LOWER('%s')", $name));
 
   return $deny;
 }