Fixed date_format handling of negative and small unix timestamps

CHANGELOG

 [2008--] 1.0.1
 * Fixed a {foreach} bug with the implode argument
 * Fixed modulo operator in if statements
+* Fixed date_format handling of negative and small unix timestamps
 
 [2008-10-23] 1.0.0
 ! BC Break: Small one that probably won't affect anyone, but it makes the

lib/plugins/builtin/functions/date_format.php

@@ -22,12 +22,12 @@ function Dwoo_Plugin_date_format(Dwoo $dwoo, $value, $format='%b %e, %Y', $defau
 {
 	if (!empty($value)) {
 		// convert if it's not a valid unix timestamp
-		if (preg_match('#^\d{10}$#', $value)===0) {
+		if (preg_match('#^-?\d{1,10}$#', $value)===0) {
 			$value = strtotime($value);
 		}
 	} elseif (!empty($default)) {
 		// convert if it's not a valid unix timestamp
-		if (preg_match('#^\d{10}$#', $default)===0) {
+		if (preg_match('#^-?\d{1,10}$#', $default)===0) {
 			$value = strtotime($default);
 		} else {
 			$value = $default;