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https://issues.apache.org/jira/browse/JEXL-307?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16969443#comment-16969443
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Henri Biestro commented on JEXL-307:
------------------------------------
Changeset: 40fd2139424f5e07cf1be149e36d2dbbc1c85436
Author: henrib <hen...@apache.org>
Date: 2019-11-07 18:31
Message: JEXL-307: clean up lexical frames after usage, fixed for-loops
lexical handling (take 2), added method to change default options in builder,
updated tests to resist default option switch
> 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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