.htaccess brain fart Options

[fixtatik]

I must have hit my head or something, because I can't figure this out for the life of me. I've been doing some work on my site, and I realized if someone goes to site.com/folder/ and the folder doesn't exist, then I get a 404 error. I'd rather have Apache strip the slash at the end and just return site.com/folder, which is a page.

Right now I have:

CODE

RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . index.php [L]

...which is doing a grand job of rewriting everything I want rewritten, except for folders that don't exist.

Regex masters, any ideas?