title: Text search though all .xib files in Xcode?
body: <p>This seems like such a basic task, but I'm stumped.</p>
  
  <p>How, in Xcode, do you execute a textual search though (the XML contents of) all the .xib files in a project?</p>
  
  <p>For example, all of our .xib files contain this string on the second line: <code>com.apple.InterfaceBuilder3.CocoaTouch.XIB</code>. So I'd think that searching all project files for that string would return all .xib files, but Xcode insists "0 occurrences". I've double checked that the Project Find Options look correct.</p>
  
  <p>I must be missing something obvious. (Or Xcode is somehow hard-coded to skip .xib files.)</p>
  
  <p>I'm trying to find all the .xib files that reference a particular class (and a text search seems like the most direct way).</p>
  
  <p>Thanks!</p>