title: Apache redirect regexp: match something that is not following something
body: <p>What regexp should stand for "everything that does not follow 'index.php' should point to 'index.php/$1'" ?</p>
  
  <p>For example, "http://mysite/moo" should point to "http://index.php/moo" while "http://index.php/moo" should not.</p>
  
  <p>I am currently using PCRE regexp (Apache docs are saying that PCRE should be used here) taking no effect: <code>RedirectMatch (?&lt;=index\.php)(\/.+) /index.php/$1</code>.</p>
  
  <p>What is the right one?</p>
  
  <p><strong>UPD:</strong> the point is to use mod_alias only, <strong>ommitting mod_rewrite</strong></p>