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by jffry 4700 days ago
Here's a test, with this markup:

http://jsfiddle.net/GEynT

  <h1>IFrame, normal</h1>
  <iframe src="http://www.example.com/"></iframe>
  <h1>IFrame, view-source</h1>
  <iframe src="view-source:http://www.example.com/"></iframe>
Chrome does not allow it and instead shows a blank frame. Firefox will show the view-source window inside the iframe (which probably /shouldn't/ be allowed). IE10, interestingly, loads that page, and then redirects you to view-source:http://www.example.com immediately.