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https://issues.apache.org/jira/browse/JEXL-131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13430775#comment-13430775
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Sebb commented on JEXL-131:
---------------------------

See also:

http://apache-commons.680414.n4.nabble.com/jexl-Unified-jexl-throws-exception-when-processing-white-space-in-file-tt4578778.html
                
>  UnifiedJexl (2.1.x)  / Jxlt (3.0) parsing may fail with NPE
> ------------------------------------------------------------
>
>                 Key: JEXL-131
>                 URL: https://issues.apache.org/jira/browse/JEXL-131
>             Project: Commons JEXL
>          Issue Type: Bug
>    Affects Versions: 2.1
>            Reporter: Henri Biestro
>            Assignee: Henri Biestro
>             Fix For: 2.1.2, 3.0
>
>
> From Clay Bruce email:
> the offending code is the method startsWith which can be found at line 1345 
> in UnifiedJEXL.java.
> Problem is that sequence is not tested to see if the index is available 
> before trying to access it.
> A source with lines starting with leading spaces will trigger the bug.

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