move 'is' method to the str class where it belongs.

laravel/uri.php

@@ -60,26 +60,11 @@ class URI {
 	 * Determine if the current URI matches a given pattern.
 	 *
 	 * @param  string  $pattern
-	 * @param  string  $uri
 	 * @return bool
 	 */
-	public static function is($pattern, $uri = null)
+	public static function is($pattern)
 	{
-		$uri = $uri ?: static::current();
-
-		// Asterisks are translated into zero-or-more regular expression wildcards
-		// to make it convenient to check if the URI starts with a given pattern
-		// such as "library/*". This is only done when not root.
-		if ($pattern !== '/')
-		{
-			$pattern = str_replace('*', '(.*)', $pattern).'\z';
-		}
-		else
-		{
-			$pattern = '^/$';
-		}
-
-		return preg_match('#'.$pattern.'#', $uri);
+		return Str::is($pattern, static::current());
 	}
 
 	/**