title: Search in file and all its SVN revision
body: <p>how to (if even possible) search for a string in a file including all its revisions? </p>
  
  <p>The reason to do so is that I know that some string was in my file <code>foo.bar</code> somewhere in past, but was removed since. There are lots of revisions on the file so manual search is time consuming. I need a tool that will download all revisions of the <code>foo.bar</code> file and search for my string in each revision.</p>
  
  <p>If possible, I'd be great to search in a directory and not just single file (but also including all revisions). This is optional however.</p>
  
  <p>The only solution I came with is to write a python script to export revision by revision and always read the file and search for the string using <a href="http://docs.python.org/library/string.html#string.find" rel="nofollow">find()</a>. </p>