I want to redirect all requests to my index.php script in such a way that everything that goes after http://mysite/ would passed to index.php as url-argument. For example, http://mysite/moo.css should become http://mysite/index.php/moo.css and http://moosite/moo/foo/bar/ should become http://index.php/moosite/moo/foo/bar/.
Easy, huh?
But not RedirectMatch (.*) index.php/$1, nor RewriteRule ^(.*)$ index.php/$1 [R,L] (or others regexp like that; RewriteEngine on was not ommitted; mod_rewrite and mod_alias are turned on) took effect.
What's going on?
Without knowing anything more, my guess would be that the Allowoverride directive is missing for that directory. (Captain obvious style answer, but still easy to overlook).