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https://issues.apache.org/jira/browse/JEXL-307?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16984378#comment-16984378
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Dmitri Blinov commented on JEXL-307:
------------------------------------
The following test case fails with undefined variable x
{code:java}
@Test
public void testParameter() throws Exception {
JexlEngine jexl = new JexlBuilder().strict(true).lexical(true).create();
JexlContext jc = new MapContext();
String strs = "var s = function(x) { for (var i : 1..3) {if (i > 2)
return x}}; s(42)";
JexlScript s42 = jexl.createScript(strs);
Object result = s42.execute(jc);
Assert.assertEquals(42, result);
}
{code}
> 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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