I don't think it is associated with the if condition, here there is 
another instance of the '!'

<%!
   require 'cgi'
  require 'json'
        .....................
        .....................
%>

Also here is the if condition block

<%! if filmstrip_image_path.blank? %>
   <div id="main-page">
      <img src="resources/image.jpg" alt="My Image"></img>
      <img id="main-page-text" src="resources/image.png"></img>
   </div>
<%! end  %>


unknown wrote in post #1081950:
> Am 30.10.2012 10:33, schrieb Georgy Daniel:
>> okay what about the '!' in  <%! if filmstrip_image_path.blank? %>
>
> Sorry, no clue. It doesn't seem to be a part of erb.
>
> I guess it should be parsed as a boolean `not'.
> But to see whether that makes sense here, you would have
> to provide more of the surrounding code, especially the
> rest of the if statement.

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