RewriteEngine On

RewriteBase /
RewriteRule (.*)/(/.*)  $1$2 [N,NS]
RewriteRule ^/index\.php/(.*)  /$1 [NS]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ /index.php/$1 [L,NS]