Index: ParserFunctions_body.php
===================================================================
--- ParserFunctions_body.php	(revision 110730)
+++ ParserFunctions_body.php	(working copy)
@@ -81,7 +81,10 @@
 	 */
 	public static function expr( $parser, $expr = '' ) {
 		try {
-			return self::getExprParser()->doExpression( $expr );
+			global $wgContLang;
+
+			$ans = self::getExprParser()->doExpression( $wgContLang->parseFormattedNumber( $expr ) );
+			return $wgContLang->formatNum( $ans, true );
 		} catch ( ExprError $e ) {
 			return $e->getMessage();
 		}
@@ -437,7 +440,9 @@
 			$cacheKey = $parser->getOptions()->getTimestamp();
 			$date = wfTimestamp( TS_ISO_8601, $cacheKey );
 		} else {
-			$cacheKey = $date;
+			global $wgContLang;
+
+			$date = $cacheKey = $wgContLang->parseFormattedNumber( $date );
 		}
 		if ( isset( self::$mTimeCache[$format][$cacheKey][$language][$local] ) ) {
 			return self::$mTimeCache[$format][$cacheKey][$language][$local];