2 files changed, 6 insertions, 1 deletions
diff --git a/phpBB/includes/constants.php b/phpBB/includes/constants.php
index 440064140c..c5e04802fc 100644
--- a/phpBB/includes/constants.php
+++ b/phpBB/includes/constants.php
@@ -28,7 +28,7 @@ if (!defined('IN_PHPBB'))
 */
 
 // phpBB Version
-@define('PHPBB_VERSION', '3.2.1-dev');
+@define('PHPBB_VERSION', '3.2.1-RC1');
 
 // QA-related
 // define('PHPBB_QA', 1);
diff --git a/phpBB/includes/functions.php b/phpBB/includes/functions.php
index 3dabd1b46e..6c15c14300 100644
--- a/phpBB/includes/functions.php
+++ b/phpBB/includes/functions.php
@@ -2815,6 +2815,11 @@ function get_preg_expression($mode)
 		case 'path_remove_dot_trailing_slash':
 			return '#^(?:(\.)?)+(?:(.+)?)+(?:([\\/\\\])$)#';
 		break;
+
+		case 'semantic_version':
+			// Regular expression to match semantic versions by http://rgxdb.com/
+			return '/(?<=^[Vv]|^)(?:(?<major>(?:0|[1-9](?:(?:0|[1-9])+)*))[.](?<minor>(?:0|[1-9](?:(?:0|[1-9])+)*))[.](?<patch>(?:0|[1-9](?:(?:0|[1-9])+)*))(?:-(?<prerelease>(?:(?:(?:[A-Za-z]|-)(?:(?:(?:0|[1-9])|(?:[A-Za-z]|-))+)?|(?:(?:(?:0|[1-9])|(?:[A-Za-z]|-))+)(?:[A-Za-z]|-)(?:(?:(?:0|[1-9])|(?:[A-Za-z]|-))+)?)|(?:0|[1-9](?:(?:0|[1-9])+)*))(?:[.](?:(?:(?:[A-Za-z]|-)(?:(?:(?:0|[1-9])|(?:[A-Za-z]|-))+)?|(?:(?:(?:0|[1-9])|(?:[A-Za-z]|-))+)(?:[A-Za-z]|-)(?:(?:(?:0|[1-9])|(?:[A-Za-z]|-))+)?)|(?:0|[1-9](?:(?:0|[1-9])+)*)))*))?(?:[+](?<build>(?:(?:(?:[A-Za-z]|-)(?:(?:(?:0|[1-9])|(?:[A-Za-z]|-))+)?|(?:(?:(?:0|[1-9])|(?:[A-Za-z]|-))+)(?:[A-Za-z]|-)(?:(?:(?:0|[1-9])|(?:[A-Za-z]|-))+)?)|(?:(?:0|[1-9])+))(?:[.](?:(?:(?:[A-Za-z]|-)(?:(?:(?:0|[1-9])|(?:[A-Za-z]|-))+)?|(?:(?:(?:0|[1-9])|(?:[A-Za-z]|-))+)(?:[A-Za-z]|-)(?:(?:(?:0|[1-9])|(?:[A-Za-z]|-))+)?)|(?:(?:0|[1-9])+)))*))?)$/';
+		break;
 	}
 
 	return '';