gistfile1.txt

- (CPString)stringByDeletingLastPathComponent
{
    var path = self,
        start = length - 1;
    
    while (path.charAt(start) === '/')
        start--;
    
    path = path.substr(0, path.lastIndexOf('/', start));
    
    if (path === "" && charAt(0) === '/')
        return '/';

    return path;
}