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https://issues.apache.org/jira/browse/VELOCITY-688?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12672515#action_12672515
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Byron Foster commented on VELOCITY-688:
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Nathan, the answer to your question is yes :)
Ok, sounds fair. I'v changed the behavior back to the original behavior of
this issue, i.e., if $foo is null an exception is thrown, if $!foo is null,
then render nothing.
Anyway, the prior behavior can always be achieved by adding an insertReference
handler that handles nulls.
> ! preceding a reference in strict mode ignores a null exception
> ---------------------------------------------------------------
>
> Key: VELOCITY-688
> URL: https://issues.apache.org/jira/browse/VELOCITY-688
> Project: Velocity
> Issue Type: Improvement
> Components: Engine
> Affects Versions: 1.7
> Reporter: Byron Foster
> Fix For: 1.7
>
>
> Change strict mode (runtime.references.strict = true) behavior such that when
> Velocity attempts to render a reference that evaluates to null then throw an
> exception. If the reference is preceded by '$!' as in $!foo, then simply
> render nothing and ignore the null value as it does for non strict mode.
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