Freemarker string escaping doesn't work with default operator -

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We use Freemarker 2.3.20 and come in a strange behavior when using the default operator to escape this way With string: 

  $ {picture. Author [0]! ""? Js_string}

In this case, quotes are not saved in the value of the authors! " "is present.

We need to check the first value and the default session can not be used: 

  & lt; #if pic. Author @ [0]? ? & Gt; {. Picture @ author [0] js_string?} $ & Lt; / # If & gt;

It is quite ugly and has blown the code.

Is this a bug or a feature?

This operator is due to priority $ {picture. Author [0]! ""? Js_string} means $ {picture}. Author [0]! (""? Jsistring)} What do you want $ {(author. @ Author [0]! "")? Js_string} .


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