19 files changed, 385 insertions, 70 deletions
diff --git a/phpBB/adm/style/acp_ext_list.html b/phpBB/adm/style/acp_ext_list.html
index ccc39ea76d..af9e00a614 100644
--- a/phpBB/adm/style/acp_ext_list.html
+++ b/phpBB/adm/style/acp_ext_list.html
@@ -48,7 +48,7 @@
 		</tr>
 		<!-- BEGIN enabled -->
 		<tr class="ext_enabled row-highlight">
-			<td><strong title="{enabled.NAME}">{enabled.META_DISPLAY_NAME}</strong></td>
+			<td><strong title="{enabled.NAME}">{enabled.META_DISPLAY_NAME}</strong><!-- EVENT acp_ext_list_enabled_name_after --></td>
 			<td style="text-align: center;">
 				<!-- IF enabled.S_VERSIONCHECK -->
 				<strong <!-- IF enabled.S_UP_TO_DATE -->style="color: #228822;"<!-- ELSE -->style="color: #BC2A4D;"<!-- ENDIF -->>{enabled.META_VERSION}</strong>
@@ -73,7 +73,7 @@
 		</tr>
 		<!-- BEGIN disabled -->
 		<tr class="ext_disabled row-highlight">
-			<td><strong title="{disabled.NAME}">{disabled.META_DISPLAY_NAME}</strong></td>
+			<td><strong title="{disabled.NAME}">{disabled.META_DISPLAY_NAME}</strong><!-- EVENT acp_ext_list_disabled_name_after --></td>
 			<td style="text-align: center;">
 				<!-- IF disabled.S_VERSIONCHECK -->
 				<strong <!-- IF disabled.S_UP_TO_DATE -->style="color: #228822;"<!-- ELSE -->style="color: #BC2A4D;"<!-- ENDIF -->>{disabled.META_VERSION}</strong>
diff --git a/phpBB/docs/events.md b/phpBB/docs/events.md
index dfccc5421a..1da2bf0b40 100644
--- a/phpBB/docs/events.md
+++ b/phpBB/docs/events.md
@@ -70,12 +70,24 @@ acp_ext_details_notice
 * Since: 3.1.11-RC1
 * Purpose: Add extension detail notices after version check information.
 
+acp_ext_list_disabled_name_after
+===
+* Location: adm/style/acp_ext_list.html
+* Since: 3.1.11-RC1
+* Purpose: Add content after the name of disabled extensions in the list
+
 acp_ext_list_disabled_title_after
 ===
 * Location: adm/style/acp_ext_list.html
 * Since: 3.1.11-RC1
 * Purpose: Add text after disabled extensions section title.
 
+acp_ext_list_enabled_name_after
+===
+* Location: adm/style/acp_ext_list.html
+* Since: 3.1.11-RC1
+* Purpose: Add content after the name of enabled extensions in the list
+
 acp_ext_list_enabled_title_after
 ===
 * Location: adm/style/acp_ext_list.html
diff --git a/phpBB/download/file.php b/phpBB/download/file.php
index 56ea273d5c..e60ffad6b0 100644
--- a/phpBB/download/file.php
+++ b/phpBB/download/file.php
@@ -262,7 +262,7 @@ else
 	* @var	string	mode				Download mode
 	* @var	bool	thumbnail			Flag indicating if the file is a thumbnail
 	* @since 3.1.6-RC1
-	* @change 3.1.7-RC1	Fixing wrong name of a variable (replacing "extension" by "extensions")
+	* @changed 3.1.7-RC1	Fixing wrong name of a variable (replacing "extension" by "extensions")
 	*/
 	$vars = array(
 		'attach_id',
diff --git a/phpBB/includes/acp/info/acp_logs.php b/phpBB/includes/acp/info/acp_logs.php
index e9e6034cd4..3b2764c4dc 100644
--- a/phpBB/includes/acp/info/acp_logs.php
+++ b/phpBB/includes/acp/info/acp_logs.php
@@ -15,16 +15,31 @@ class acp_logs_info
 {
 	function module()
 	{
+		global $phpbb_dispatcher;
+
+		$modes = array(
+			'admin'		=> array('title' => 'ACP_ADMIN_LOGS', 'auth' => 'acl_a_viewlogs', 'cat' => array('ACP_FORUM_LOGS')),
+			'mod'		=> array('title' => 'ACP_MOD_LOGS', 'auth' => 'acl_a_viewlogs', 'cat' => array('ACP_FORUM_LOGS')),
+			'users'		=> array('title' => 'ACP_USERS_LOGS', 'auth' => 'acl_a_viewlogs', 'cat' => array('ACP_FORUM_LOGS')),
+			'critical'	=> array('title' => 'ACP_CRITICAL_LOGS', 'auth' => 'acl_a_viewlogs', 'cat' => array('ACP_FORUM_LOGS')),
+		);
+
+		/**
+		* Event to add or modify ACP log modulemodes
+		*
+		* @event core.acp_logs_info_modify_modes
+		* @var	array	modes	Array with modes info
+		* @since 3.1.11-RC1
+		* @since 3.2.1-RC1
+		*/
+		$vars = array('modes');
+		extract($phpbb_dispatcher->trigger_event('core.acp_logs_info_modify_modes', compact($vars)));
+
 		return array(
 			'filename'	=> 'acp_logs',
 			'title'		=> 'ACP_LOGGING',
 			'version'	=> '1.0.0',
-			'modes'		=> array(
-				'admin'		=> array('title' => 'ACP_ADMIN_LOGS', 'auth' => 'acl_a_viewlogs', 'cat' => array('ACP_FORUM_LOGS')),
-				'mod'		=> array('title' => 'ACP_MOD_LOGS', 'auth' => 'acl_a_viewlogs', 'cat' => array('ACP_FORUM_LOGS')),
-				'users'		=> array('title' => 'ACP_USERS_LOGS', 'auth' => 'acl_a_viewlogs', 'cat' => array('ACP_FORUM_LOGS')),
-				'critical'	=> array('title' => 'ACP_CRITICAL_LOGS', 'auth' => 'acl_a_viewlogs', 'cat' => array('ACP_FORUM_LOGS')),
-			),
+			'modes'		=> $modes,
 		);
 	}
 
diff --git a/phpBB/includes/functions_display.php b/phpBB/includes/functions_display.php
index b49a8b80c0..3b2d66c2d3 100644
--- a/phpBB/includes/functions_display.php
+++ b/phpBB/includes/functions_display.php
@@ -646,7 +646,7 @@ function display_forums($root_data = '', $display_moderators = true, $return_mod
 		* @var	array	row				The data of the forum
 		* @var	array	subforums_row	Template data of subforums
 		* @since 3.1.0-a1
-		* @change 3.1.0-b5 Added var subforums_row
+		* @changed 3.1.0-b5 Added var subforums_row
 		*/
 		$vars = array('forum_row', 'row', 'subforums_row');
 		extract($phpbb_dispatcher->trigger_event('core.display_forums_modify_template_vars', compact($vars)));
diff --git a/phpBB/includes/functions_posting.php b/phpBB/includes/functions_posting.php
index 30f5ba91ef..ba367e5eeb 100644
--- a/phpBB/includes/functions_posting.php
+++ b/phpBB/includes/functions_posting.php
@@ -2514,7 +2514,7 @@ function submit_post($mode, $subject, $username, $topic_type, &$poll, &$data, $u
 	* @var	string	url					The "Return to topic" URL
 	*
 	* @since 3.1.0-a3
-	* @change 3.1.0-RC3 Added vars mode, subject, username, topic_type,
+	* @changed 3.1.0-RC3 Added vars mode, subject, username, topic_type,
 	*		poll, update_message, update_search_index
 	*/
 	$vars = array(
diff --git a/phpBB/includes/functions_user.php b/phpBB/includes/functions_user.php
index c78beaa6a5..4aecbff6ba 100644
--- a/phpBB/includes/functions_user.php
+++ b/phpBB/includes/functions_user.php
@@ -272,13 +272,15 @@ function user_add($user_row, $cp_data = false, $notifications_data = null)
 	* Use this event to modify the values to be inserted when a user is added
 	*
 	* @event core.user_add_modify_data
-	* @var array	user_row		Array of user details submited to user_add
-	* @var array	cp_data			Array of Custom profile fields submited to user_add
-	* @var array	sql_ary		Array of data to be inserted when a user is added
+	* @var array	user_row			Array of user details submited to user_add
+	* @var array	cp_data				Array of Custom profile fields submited to user_add
+	* @var array	sql_ary				Array of data to be inserted when a user is added
+	* @var array	notifications_data	Array of notification data to be inserted when a user is added
 	* @since 3.1.0-a1
-	* @change 3.1.0-b5
+	* @changed 3.1.0-b5 Added user_row and cp_data
+	* @changed 3.1.11-RC1 Added notifications_data
 	*/
-	$vars = array('user_row', 'cp_data', 'sql_ary');
+	$vars = array('user_row', 'cp_data', 'sql_ary', 'notifications_data');
 	extract($phpbb_dispatcher->trigger_event('core.user_add_modify_data', compact($vars)));
 
 	$sql = 'INSERT INTO ' . USERS_TABLE . ' ' . $db->sql_build_array('INSERT', $sql_ary);
diff --git a/phpBB/includes/mcp/mcp_main.php b/phpBB/includes/mcp/mcp_main.php
index 599bd5d918..491697d2e9 100644
--- a/phpBB/includes/mcp/mcp_main.php
+++ b/phpBB/includes/mcp/mcp_main.php
@@ -164,7 +164,7 @@ class mcp_main
 				* @var	string	action		Topic quick moderation action name
 				* @var	bool	quickmod	Flag indicating whether MCP is in quick moderation mode
 				* @since 3.1.0-a4
-				* @change 3.1.0-RC4 Added variables: action, quickmod
+				* @changed 3.1.0-RC4 Added variables: action, quickmod
 				*/
 				$vars = array('action', 'quickmod');
 				extract($phpbb_dispatcher->trigger_event('core.modify_quickmod_actions', compact($vars)));
diff --git a/phpBB/includes/message_parser.php b/phpBB/includes/message_parser.php
index 16b65fb83e..bbd5e84233 100644
--- a/phpBB/includes/message_parser.php
+++ b/phpBB/includes/message_parser.php
@@ -1171,7 +1171,7 @@ class parse_message extends bbcode_firstpass
 		* @var bool		return					Do we return after the event is triggered if $warn_msg is not empty
 		* @var array	warn_msg				Array of the warning messages
 		* @since 3.1.2-RC1
-		* @change 3.1.3-RC1 Added vars $bbcode_bitfield and $bbcode_uid
+		* @changed 3.1.3-RC1 Added vars $bbcode_bitfield and $bbcode_uid
 		*/
 		$message = $this->message;
 		$warn_msg = $this->warn_msg;
diff --git a/phpBB/phpbb/event/php_exporter.php b/phpBB/phpbb/event/php_exporter.php
index d2ab0595c0..ae3553c558 100644
--- a/phpBB/phpbb/event/php_exporter.php
+++ b/phpBB/phpbb/event/php_exporter.php
@@ -510,7 +510,7 @@ class php_exporter
 	/**
 	* Find the "@changed" Information lines
 	*
-	* @param string $tag_name Should be 'changed' or 'change'
+	* @param string $tag_name Should be 'change', not 'changed'
 	* @return array Absolute line numbers
 	* @throws \LogicException
 	*/
@@ -658,7 +658,7 @@ class php_exporter
 	{
 		$match = array();
 		$line = str_replace("\t", ' ', ltrim($line, "\t "));
-		preg_match('#^\* @change(d)? (\d+\.\d+\.\d+(?:-(?:a|b|RC|pl)\d+)?)( (?:.*))?$#', $line, $match);
+		preg_match('#^\* @changed (\d+\.\d+\.\d+(?:-(?:a|b|RC|pl)\d+)?)( (?:.*))?$#', $line, $match);
 		if (!isset($match[2]))
 		{
 			throw new \LogicException("Invalid '@changed' information for event "
diff --git a/phpBB/phpbb/template/base.php b/phpBB/phpbb/template/base.php
index 9a40702ba8..41c0a01ba8 100644
--- a/phpBB/phpbb/template/base.php
+++ b/phpBB/phpbb/template/base.php
@@ -133,6 +133,14 @@ abstract class base implements template
 	}
 
 	/**
+	* {@inheritdoc}
+	*/
+	public function find_key_index($blockname, $key)
+	{
+		return $this->context->find_key_index($blockname, $key);
+	}
+
+	/**
 	* Calls hook if any is defined.
 	*
 	* @param string $handle Template handle being displayed.
diff --git a/phpBB/phpbb/template/context.php b/phpBB/phpbb/template/context.php
index 8bf6c10e2d..5d04a09865 100644
--- a/phpBB/phpbb/template/context.php
+++ b/phpBB/phpbb/template/context.php
@@ -264,6 +264,89 @@ class context
 	}
 
 	/**
+	* Find the index for a specified key in the innermost specified block
+	*
+	* @param	string	$blockname	the blockname, for example 'loop'
+	* @param	mixed	$key		Key to search for
+	*
+	* array: KEY => VALUE [the key/value pair to search for within the loop to determine the correct position]
+	*
+	* int: Position [the position to search for]
+	*
+	* If key is false the position is set to 0
+	* If key is true the position is set to the last entry
+	*
+	* @return mixed false if not found, index position otherwise; be sure to test with ===
+	*/
+	public function find_key_index($blockname, $key)
+	{
+		// For nested block, $blockcount > 0, for top-level block, $blockcount == 0
+		$blocks = explode('.', $blockname);
+		$blockcount = sizeof($blocks) - 1;
+
+		$block = $this->tpldata;
+		for ($i = 0; $i < $blockcount; $i++)
+		{
+			if (($pos = strpos($blocks[$i], '[')) !== false)
+			{
+				$name = substr($blocks[$i], 0, $pos);
+
+				if (strpos($blocks[$i], '[]') === $pos)
+				{
+					$index = sizeof($block[$name]) - 1;
+				}
+				else
+				{
+					$index = min((int) substr($blocks[$i], $pos + 1, -1), sizeof($block[$name]) - 1);
+				}
+			}
+			else
+			{
+				$name = $blocks[$i];
+				$index = sizeof($block[$name]) - 1;
+			}
+			if (!isset($block[$name]))
+			{
+				return false;
+			}
+			$block = $block[$name];
+			if (!isset($block[$index]))
+			{
+				return false;
+			}
+			$block = $block[$index];
+		}
+
+		if (!isset($block[$blocks[$i]]))
+		{
+			return false;
+		}
+		$block = $block[$blocks[$i]]; // Traverse the last block
+
+		// Change key to zero (change first position) if false and to last position if true
+		if ($key === false || $key === true)
+		{
+			return ($key === false) ? 0 : sizeof($block) - 1;
+		}
+
+		// Get correct position if array given
+		if (is_array($key))
+		{
+			// Search array to get correct position
+			list($search_key, $search_value) = @each($key);
+			foreach ($block as $i => $val_ary)
+			{
+				if ($val_ary[$search_key] === $search_value)
+				{
+					return $i;
+				}
+			}
+		}
+
+		return (is_int($key) && ((0 <= $key) && ($key < sizeof($block)))) ? $key : false;
+	}
+
+	/**
 	* Change already assigned key variable pair (one-dimensional - single loop entry)
 	*
 	* An example of how to use this function:
@@ -293,45 +376,49 @@ class context
 	public function alter_block_array($blockname, array $vararray, $key = false, $mode = 'insert')
 	{
 		$this->num_rows_is_set = false;
-		if (strpos($blockname, '.') !== false)
-		{
-			// Nested block.
-			$blocks = explode('.', $blockname);
-			$blockcount = sizeof($blocks) - 1;
 
-			$block = &$this->tpldata;
-			for ($i = 0; $i < $blockcount; $i++)
+		// For nested block, $blockcount > 0, for top-level block, $blockcount == 0
+		$blocks = explode('.', $blockname);
+		$blockcount = sizeof($blocks) - 1;
+
+		$block = &$this->tpldata;
+		for ($i = 0; $i < $blockcount; $i++)
+		{
+			if (($pos = strpos($blocks[$i], '[')) !== false)
 			{
-				if (($pos = strpos($blocks[$i], '[')) !== false)
+				$name = substr($blocks[$i], 0, $pos);
+
+				if (strpos($blocks[$i], '[]') === $pos)
 				{
-					$name = substr($blocks[$i], 0, $pos);
-
-					if (strpos($blocks[$i], '[]') === $pos)
-					{
-						$index = sizeof($block[$name]) - 1;
-					}
-					else
-					{
-						$index = min((int) substr($blocks[$i], $pos + 1, -1), sizeof($block[$name]) - 1);
-					}
+					$index = sizeof($block[$name]) - 1;
 				}
 				else
 				{
-					$name = $blocks[$i];
-					$index = sizeof($block[$name]) - 1;
+					$index = min((int) substr($blocks[$i], $pos + 1, -1), sizeof($block[$name]) - 1);
 				}
-				$block = &$block[$name];
-				$block = &$block[$index];
 			}
-
-			$block = &$block[$blocks[$i]]; // Traverse the last block
+			else
+			{
+				$name = $blocks[$i];
+				$index = sizeof($block[$name]) - 1;
+			}
+			$block = &$block[$name];
+			$block = &$block[$index];
 		}
-		else
+		$name = $blocks[$i];
+
+		// If last block does not exist and we are inserting, and not searching for key, we create it empty; otherwise, nothing to do
+		if (!isset($block[$name]))
 		{
-			// Top-level block.
-			$block = &$this->tpldata[$blockname];
+			if ($mode != 'insert' || is_array($key))
+			{
+				return false;
+			}
+			$block[$name] = array();
 		}
 
+		$block = &$block[$name]; // Now we can traverse the last block
+
 		// Change key to zero (change first position) if false and to last position if true
 		if ($key === false || $key === true)
 		{
@@ -371,14 +458,15 @@ class context
 				unset($block[($key - 1)]['S_LAST_ROW']);
 				$vararray['S_LAST_ROW'] = true;
 			}
-			else if ($key === 0)
+			if ($key <= 0)
 			{
+				$key = 0;
 				unset($block[0]['S_FIRST_ROW']);
 				$vararray['S_FIRST_ROW'] = true;
 			}
 
 			// Assign S_BLOCK_NAME
-			$vararray['S_BLOCK_NAME'] = $blockname;
+			$vararray['S_BLOCK_NAME'] = $name;
 
 			// Re-position template blocks
 			for ($i = sizeof($block); $i > $key; $i--)
@@ -398,6 +486,12 @@ class context
 		// Which block to change?
 		if ($mode == 'change')
 		{
+			// If key is out of bounds, do not change anything
+			if ($key > sizeof($block) || $key < 0)
+			{
+				return false;
+			}
+
 			if ($key == sizeof($block))
 			{
 				$key--;
diff --git a/phpBB/phpbb/template/template.php b/phpBB/phpbb/template/template.php
index 041ecb12e4..9e3d658ca8 100644
--- a/phpBB/phpbb/template/template.php
+++ b/phpBB/phpbb/template/template.php
@@ -173,6 +173,23 @@ interface template
 	public function alter_block_array($blockname, array $vararray, $key = false, $mode = 'insert');
 
 	/**
+	* Find the index for a specified key in the innermost specified block
+	*
+	* @param	string	$blockname	the blockname, for example 'loop'
+	* @param	mixed	$key		Key to search for
+	*
+	* array: KEY => VALUE [the key/value pair to search for within the loop to determine the correct position]
+	*
+	* int: Position [the position to search for]
+	*
+	* If key is false the position is set to 0
+	* If key is true the position is set to the last entry
+	*
+	* @return mixed false if not found, index position otherwise; be sure to test with ===
+	*/
+	public function find_key_index($blockname, $key);
+
+	/**
 	* Get path to template for handle (required for BBCode parser)
 	*
 	* @param string $handle Handle to retrieve the source file
diff --git a/phpBB/posting.php b/phpBB/posting.php
index db580d926b..4651a1fd2c 100644
--- a/phpBB/posting.php
+++ b/phpBB/posting.php
@@ -84,7 +84,7 @@ $current_time = time();
 *							NOTE: Should be actual language strings, NOT
 *							language keys.
 * @since 3.1.0-a1
-* @change 3.1.2-RC1			Removed 'delete' var as it does not exist
+* @changed 3.1.2-RC1			Removed 'delete' var as it does not exist
 */
 $vars = array(
 	'post_id',
@@ -941,7 +941,9 @@ if ($submit || $preview || $refresh)
 	*				is posting a new topic or editing a post)
 	* @var	bool	refresh		Whether or not to retain previously submitted data
 	* @var	object	message_parser	The message parser object
+	* @var	array	error		Array of errors
 	* @since 3.1.2-RC1
+	* @changed 3.1.11-RC1 Added error
 	*/
 	$vars = array(
 		'post_data',
@@ -956,6 +958,7 @@ if ($submit || $preview || $refresh)
 		'cancel',
 		'refresh',
 		'message_parser',
+		'error',
 	);
 	extract($phpbb_dispatcher->trigger_event('core.posting_modify_message_text', compact($vars)));
 
@@ -1261,7 +1264,7 @@ if ($submit || $preview || $refresh)
 	* @var	array	error		Any error strings; a non-empty array aborts form submission.
 	*				NOTE: Should be actual language strings, NOT language keys.
 	* @since 3.1.0-RC5
-	* @change 3.1.5-RC1 Added poll array to the event
+	* @changed 3.1.5-RC1 Added poll array to the event
 	*/
 	$vars = array(
 		'post_data',
@@ -1869,13 +1872,13 @@ if (($mode == 'post' || ($mode == 'edit' && $post_id == $post_data['topic_first_
 *				posting page via $template->assign_vars()
 * @var	object	message_parser	The message parser object
 * @since 3.1.0-a1
-* @change 3.1.0-b3 Added vars post_data, moderators, mode, page_title,
+* @changed 3.1.0-b3 Added vars post_data, moderators, mode, page_title,
 *		s_topic_icons, form_enctype, s_action, s_hidden_fields,
 *		post_id, topic_id, forum_id, submit, preview, save, load,
 *		delete, cancel, refresh, error, page_data, message_parser
-* @change 3.1.2-RC1 Removed 'delete' var as it does not exist
-* @change 3.1.5-RC1 Added poll variables to the page_data array
-* @change 3.1.6-RC1 Added 'draft_id' var
+* @changed 3.1.2-RC1 Removed 'delete' var as it does not exist
+* @changed 3.1.5-RC1 Added poll variables to the page_data array
+* @changed 3.1.6-RC1 Added 'draft_id' var
 */
 $vars = array(
 	'post_data',
diff --git a/phpBB/viewforum.php b/phpBB/viewforum.php
index 69b480574e..1938c25fed 100644
--- a/phpBB/viewforum.php
+++ b/phpBB/viewforum.php
@@ -431,9 +431,9 @@ $sql_array = array(
 *									Author, Post time, Replies, Subject, Views
 * @var	string	sort_dir			Either "a" for ascending or "d" for descending
 * @since 3.1.0-a1
-* @change 3.1.0-RC4 Added forum_data var
-* @change 3.1.4-RC1 Added forum_id, topics_count, sort_days, sort_key and sort_dir vars
-* @change 3.1.9-RC1 Fix types of properties
+* @changed 3.1.0-RC4 Added forum_data var
+* @changed 3.1.4-RC1 Added forum_id, topics_count, sort_days, sort_key and sort_dir vars
+* @changed 3.1.9-RC1 Fix types of properties
 */
 $vars = array(
 	'forum_data',
diff --git a/phpBB/viewonline.php b/phpBB/viewonline.php
index 8bfa422e26..5cb1175528 100644
--- a/phpBB/viewonline.php
+++ b/phpBB/viewonline.php
@@ -168,7 +168,7 @@ $sql_ary = array(
 * @var	int		guest_counter	Number of guests displayed
 * @var	array	forum_data		Array with forum data
 * @since 3.1.0-a1
-* @change 3.1.0-a2 Added vars guest_counter and forum_data
+* @changed 3.1.0-a2 Added vars guest_counter and forum_data
 */
 $vars = array('sql_ary', 'show_guests', 'guest_counter', 'forum_data');
 extract($phpbb_dispatcher->trigger_event('core.viewonline_modify_sql', compact($vars)));
@@ -385,7 +385,7 @@ while ($row = $db->sql_fetchrow($result))
 	* @var	string	location_url	Page url to displayed in the list
 	* @var	array	forum_data		Array with forum data
 	* @since 3.1.0-a1
-	* @change 3.1.0-a2 Added var forum_data
+	* @changed 3.1.0-a2 Added var forum_data
 	*/
 	$vars = array('on_page', 'row', 'location', 'location_url', 'forum_data');
 	extract($phpbb_dispatcher->trigger_event('core.viewonline_overwrite_location', compact($vars)));
diff --git a/phpBB/viewtopic.php b/phpBB/viewtopic.php
index dc656b8fad..378e2d8f97 100644
--- a/phpBB/viewtopic.php
+++ b/phpBB/viewtopic.php
@@ -700,7 +700,7 @@ $base_url = append_sid("{$phpbb_root_path}viewtopic.$phpEx", "f=$forum_id&amp;t=
 * @var	int		total_posts			Topic total posts count
 * @var	string	viewtopic_url		URL to the topic page
 * @since 3.1.0-RC4
-* @change 3.1.2-RC1 Added viewtopic_url
+* @changed 3.1.2-RC1 Added viewtopic_url
 */
 $vars = array(
 	'base_url',
@@ -1200,7 +1200,7 @@ $sql_ary = array(
 * @var	int		start		Pagination information
 * @var	array	sql_ary		The SQL array to get the data of posts and posters
 * @since 3.1.0-a1
-* @change 3.1.0-a2 Added vars forum_id, topic_id, topic_data, post_list, sort_days, sort_key, sort_dir, start
+* @changed 3.1.0-a2 Added vars forum_id, topic_id, topic_data, post_list, sort_days, sort_key, sort_dir, start
 */
 $vars = array(
 	'forum_id',
@@ -2007,9 +2007,9 @@ for ($i = 0, $end = sizeof($post_list); $i < $end; ++$i)
 	* @var	array	post_row			Template block array of the post
 	* @var	array	topic_data			Array with topic data
 	* @since 3.1.0-a1
-	* @change 3.1.0-a3 Added vars start, current_row_number, end, attachments
-	* @change 3.1.0-b3 Added topic_data array, total_posts
-	* @change 3.1.0-RC3 Added poster_id
+	* @changed 3.1.0-a3 Added vars start, current_row_number, end, attachments
+	* @changed 3.1.0-b3 Added topic_data array, total_posts
+	* @changed 3.1.0-RC3 Added poster_id
 	*/
 	$vars = array(
 		'start',
@@ -2107,7 +2107,7 @@ for ($i = 0, $end = sizeof($post_list); $i < $end; ++$i)
 	* @var	array	post_row			Template block array of the post
 	* @var	array	topic_data			Array with topic data
 	* @since 3.1.0-a3
-	* @change 3.1.0-b3 Added topic_data array, total_posts
+	* @changed 3.1.0-b3 Added topic_data array, total_posts
 	*/
 	$vars = array(
 		'start',
@@ -2270,7 +2270,7 @@ $page_title = $topic_data['topic_title'] . ($start ? ' - ' . sprintf($user->lang
 * @var	int		start			Start offset used to calculate the page
 * @var	array	post_list		Array with post_ids we are going to display
 * @since 3.1.0-a1
-* @change 3.1.0-RC4 Added post_list var
+* @changed 3.1.0-RC4 Added post_list var
 */
 $vars = array('page_title', 'topic_data', 'forum_id', 'start', 'post_list');
 extract($phpbb_dispatcher->trigger_event('core.viewtopic_modify_page_title', compact($vars)));
diff --git a/tests/event/fixtures/trigger_many_vars.test b/tests/event/fixtures/trigger_many_vars.test
index a624138588..5e0720d13b 100644
--- a/tests/event/fixtures/trigger_many_vars.test
+++ b/tests/event/fixtures/trigger_many_vars.test
@@ -34,7 +34,7 @@
 	*				posting page via $template->assign_vars()
 	* @var	object	message_parser	The message parser object
 	* @since 3.1.0-a1
-	* @change 3.1.0-b3 Added vars post_data, moderators, mode, page_title,
+	* @changed 3.1.0-b3 Added vars post_data, moderators, mode, page_title,
 	*		s_topic_icons, form_enctype, s_action, s_hidden_fields,
 	*		post_id, topic_id, forum_id, submit, preview, save, load,
 	*		delete, cancel, refresh, error, page_data, message_parser
diff --git a/tests/template/template_test.php b/tests/template/template_test.php
index 0bbfe3848d..69546cc227 100644
--- a/tests/template/template_test.php
+++ b/tests/template/template_test.php
@@ -528,22 +528,139 @@ EOT
 			),
 			array(
 				'outer',
+				array('VARIABLE' => 'changed'),
+				0,
+				'change',
+				<<<EOT
+outer - 0 - changed
+middle - 0
+middle - 1
+outer - 1
+middle - 0
+middle - 1
+outer - 2
+middle - 0
+middle - 1
+EOT
+,
+				'Test changing at 0 on top level block',
+			),
+			array(
+				'outer',
+				array('VARIABLE' => 'changed'),
+				array('S_ROW_NUM' => 2),
+				'change',
+				<<<EOT
+outer - 0
+middle - 0
+middle - 1
+outer - 1
+middle - 0
+middle - 1
+outer - 2 - changed
+middle - 0
+middle - 1
+EOT
+,
+				'Test changing at KEY on top level block',
+			),
+			array(
+				'outer.middle',
+				array('VARIABLE' => 'before'),
+				false,
+				'insert',
+				<<<EOT
+outer - 0
+middle - 0
+middle - 1
+outer - 1
+middle - 0
+middle - 1
+outer - 2
+middle - 0 - before
+middle - 1
+middle - 2
+EOT
+,
+				'Test inserting before on middle level block',
+			),
+			array(
+				'outer.middle',
+				array('VARIABLE' => 'after'),
+				true,
+				'insert',
+				<<<EOT
+outer - 0
+middle - 0
+middle - 1
+outer - 1
+middle - 0
+middle - 1
+outer - 2
+middle - 0
+middle - 1
+middle - 2 - after
+EOT
+,
+				'Test inserting after on middle level block',
+			),
+			array(
+				'outer[1].middle',
 				array('VARIABLE' => 'pos #1'),
+				1,
+				'insert',
+				<<<EOT
+outer - 0
+middle - 0
+middle - 1
+outer - 1
+middle - 0
+middle - 1 - pos #1
+middle - 2
+outer - 2
+middle - 0
+middle - 1
+EOT
+,
+				'Test inserting at 1 on middle level block',
+			),
+			array(
+				'outer[].middle',
+				array('VARIABLE' => 'changed'),
 				0,
 				'change',
 				<<<EOT
-outer - 0 - pos #1
+outer - 0
 middle - 0
 middle - 1
 outer - 1
 middle - 0
 middle - 1
 outer - 2
+middle - 0 - changed
+middle - 1
+EOT
+,
+				'Test changing at beginning of last top level block',
+			),
+			array(
+				'outer.middle',
+				array('VARIABLE' => 'changed'),
+				array('S_ROW_NUM' => 1),
+				'change',
+				<<<EOT
+outer - 0
+middle - 0
+middle - 1
+outer - 1
 middle - 0
 middle - 1
+outer - 2
+middle - 0
+middle - 1 - changed
 EOT
 ,
-				'Test inserting at 1 on top level block',
+				'Test changing at beginning of last top level block',
 			),
 		);
 	}
@@ -601,8 +718,55 @@ EOT
 
 		$expect = 'outer - 0[outer|4]outer - 1[outer|4]middle - 0[middle|1]outer - 2 - test[outer|4]middle - 0[middle|2]middle - 1[middle|2]outer - 3[outer|4]middle - 0[middle|3]middle - 1[middle|3]middle - 2[middle|3]';
 		$this->assertEquals($expect, str_replace(array("\n", "\r", "\t"), '', $this->display('test')), 'Ensuring S_NUM_ROWS is correct after modification');
+
+		$this->template->alter_block_array('outer.middle', array());
+
+		$expect = 'outer - 0[outer|4]outer - 1[outer|4]middle - 0[middle|1]outer - 2 - test[outer|4]middle - 0[middle|2]middle - 1[middle|2]outer - 3[outer|4]middle - 0[middle|4]middle - 1[middle|4]middle - 2[middle|4]middle - 3[middle|4]';
+		$this->assertEquals($expect, str_replace(array("\n", "\r", "\t"), '', $this->display('test')), 'Ensuring S_NUM_ROWS is correct after insertion at middle level');
+
+		$this->template->alter_block_array('outer.middle', array('VARIABLE' => 'test'), 2, 'change');
+
+		$expect = 'outer - 0[outer|4]outer - 1[outer|4]middle - 0[middle|1]outer - 2 - test[outer|4]middle - 0[middle|2]middle - 1[middle|2]outer - 3[outer|4]middle - 0[middle|4]middle - 1[middle|4]middle - 2 - test[middle|4]middle - 3[middle|4]';
+		$this->assertEquals($expect, str_replace(array("\n", "\r", "\t"), '', $this->display('test')), 'Ensuring S_NUM_ROWS is correct after modification at middle level');
 	}
 
+	public function test_find_key_index()
+	{
+		$this->template->set_filenames(array('test' => 'loop_nested.html'));
+
+		$this->template->assign_var('TEST_MORE', true);
+
+		// @todo Change this
+		$this->template->assign_block_vars('outer', array('VARIABLE' => 'zero'));
+		$this->template->assign_block_vars('outer', array('VARIABLE' => 'one'));
+		$this->template->assign_block_vars('outer.middle', array('VARIABLE' => '1A'));
+		$this->template->assign_block_vars('outer', array('VARIABLE' => 'two'));
+		$this->template->assign_block_vars('outer.middle', array('VARIABLE' => '2A'));
+		$this->template->assign_block_vars('outer.middle', array('VARIABLE' => '2B'));
+		$this->template->assign_block_vars('outer', array('VARIABLE' => 'three'));
+		$this->template->assign_block_vars('outer.middle', array('VARIABLE' => '3A'));
+		$this->template->assign_block_vars('outer.middle', array('VARIABLE' => '3B'));
+		$this->template->assign_block_vars('outer.middle', array('VARIABLE' => '3C'));
+
+		$expect = 'outer - 0 - zero[outer|4]outer - 1 - one[outer|4]middle - 0 - 1A[middle|1]outer - 2 - two[outer|4]middle - 0 - 2A[middle|2]middle - 1 - 2B[middle|2]outer - 3 - three[outer|4]middle - 0 - 3A[middle|3]middle - 1 - 3B[middle|3]middle - 2 - 3C[middle|3]';
+		$this->assertEquals($expect, str_replace(array("\n", "\r", "\t"), '', $this->display('test')), 'Ensuring template is built correctly before modification');
+
+		$this->template->find_key_index('outer', false);
+
+		$this->assertEquals(0, $this->template->find_key_index('outer', false), 'Find index at the beginning of outer loop');
+		$this->assertEquals(1, $this->template->find_key_index('outer', 1), 'Find index by index in outer loop');
+		$this->assertEquals(2, $this->template->find_key_index('outer', array('VARIABLE' => 'two')), 'Find index by key in outer loop');
+		$this->assertEquals(3, $this->template->find_key_index('outer', true), 'Find index at the end of outer loop');
+		$this->assertEquals(false, $this->template->find_key_index('outer', 7), 'Find index out of bounds of outer loop');
+
+		$this->assertEquals(false, $this->template->find_key_index('outer[0].middle', false), 'Find index at the beginning of middle loop, no middle block');
+		$this->assertEquals(false, $this->template->find_key_index('outer[1].middle', 1), 'Find index by index in inner loop, out of bounds');
+		$this->assertEquals(1, $this->template->find_key_index('outer[2].middle', array('VARIABLE' => '2B')), 'Find index by key in middle loop');
+		$this->assertEquals(2, $this->template->find_key_index('outer.middle', true), 'Find index at the end of middle loop');
+
+		$this->assertEquals(false, $this->template->find_key_index('outer.wrong', true), 'Wrong middle block name');
+		$this->assertEquals(false, $this->template->find_key_index('wrong.middle', false), 'Wrong outer block name');
+	}
 	public function assign_block_vars_array_data()
 	{
 		return array(