Error : no viable alternative at character '\'

+++ This bug was initially created as a clone of Bug #983347 +++

Description of problem:

"Error : no viable alternative at character '\'" is seen in logs when using "/n" in a Script Task as follows:

I figured this out and it is from the script tasks:

Example:

<drools:script><![CDATA[com.llnw.bpm.UpdateObject _update = new com.llnw.bpm.UpdateObject();\n\n_update.setMessage("This is the message");\n_update.setOppId(324);\n_update.setType("INFO");\n\nkcontext.setVariable("updateObject",_update);]]></drools:script>

they are from the /n. If I remove the /n then the errors don't show up in logs.

It seems to be a regression as a similar issue was reported in the cloned bz and it seems as that had been fixed.