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https://issues.apache.org/jira/browse/JEXL-307?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16976690#comment-16976690
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Henri Biestro commented on JEXL-307:
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Changeset: 854387184da4044769669e84235d1ef4d7f8f43b
Author: henrib <[email protected]>
Date: 2019-11-18 17:41
Message: JEXL-307: as a default, copy options handled of context used at
runtime to reduce the possibility of artificially complex mistakes; add an
explicit flag to still allow purposeful usage
Task #JEXL-307 - Variable redeclaration option
> Variable redeclaration option
> -----------------------------
>
> Key: JEXL-307
> URL: https://issues.apache.org/jira/browse/JEXL-307
> Project: Commons JEXL
> Issue Type: New Feature
> Affects Versions: 3.1
> Reporter: Dmitri Blinov
> Assignee: Henri Biestro
> Priority: Minor
> Fix For: 3.2
>
>
> As of now, JEXL allows a script writer to redeclare a local variable during
> script evaluation.
> {code:java}
> var a = 1; var a = 2;{code}
> This may lead to potential errors with misspelled names and clashed
> variables. Checking for already defined variable is a common feature of many
> languages. This feature can be implemented in JEXL as an additional option of
> JexlFeatures class, enabled by default, thus allowing compatibility with
> existing code.
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