[rules-users] problem escaping quote in eval

[samlotti]

Hello,

I'm trying to construct a rule in drool V4 that contains and eval and a
literal string that may contain quotes. I've tried escaping the quote but
get the error below.  The \" works outside an eval.

rule "evalList2"
	when
		Var( eval( "tt".equals("t\"t")))
	then
		System.out.println( "evalList2" ); 
end


Error:
java.lang.NullPointerException: 
	at
org.drools.rule.PredicateConstraint.createContextEntry(PredicateConstraint.java:201)
	at org.drools.reteoo.AlphaNode.createMemory(AlphaNode.java:230)
           ...

It looks like a change was made to V3 to fix this but doesnt appear to work
in V4, does anyone know how to construct this type of rule?

Thanks
Sam

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