Fixed a bug with my original extension checker for formats.

index.php

@@ -17,7 +17,7 @@
     <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.4.3/jquery.min.js"></script>
     <script>
 
-      $('#results').load('ajax');
+      $('#results').load('/ajax');
 
     </script>
 
@@ -47,7 +47,13 @@
 });
 
 get('/hello/(.*?)', function($sammy) {
-	return 'Hello '.$sammy->segment(2);
+
+  $sammy->format('json', function($sammy) {
+    return json_encode(array('name', $sammy->segment(2)));
+  });
+
+  if( !$sammy->format )
+  	return 'Hello '.$sammy->segment(2);
 });
 
 ajax('/ajax', function() {

sammy.php

@@ -68,8 +68,13 @@ public static function process($route, $callback, $type) {
 		if( static::$route_found || (!preg_match('@^'.$route.'(?:\.(\w+))?$@uD', $sammy->uri, $matches) || $sammy->method != $type) ) {
 			return false;
 		}
-
-		$sammy->format = (!empty($matches[1])) ? $matches[1] : null;
+
+    // Get the extension
+    $extension = $matches[count($matches)-1];
+    $extension_test = substr($sammy->uri, -(strlen($extension)+1), (strlen($extension)+1));
+
+    if( $extension_test == '.' . $extension )
+      $sammy->format = $extension;
 
 		static::$route_found = true;
 		echo $callback($sammy);
@@ -83,7 +88,12 @@ public function __construct() {
 	}
 
 	public function segment($num) {
-		return isset($this->segments[$num - 1]) ? $this->segments[$num - 1] : null;
+	  $num--;
+
+    // Remove the extension
+    $this->segments[$num] = isset($this->segments[$num]) ? rtrim($this->segments[$num], '.' . $this->format) : null;
+
+		return isset($this->segments[$num]) ? $this->segments[$num] : null;
 	}
 
 	protected function get_method() {