在.htaccess中使用否定正则表达式条件的RewriteCond不起作用？

I'm trying to prevent, in this case WordPress, from rewriting certain URLs. In this case I'm trying to prevent it from ever handling a request in the uploads directory, and instead leave those to the server's 404 page. So I'm assuming it's as simple as adding the rule:I'm trying to prevent, in this case WordPress,