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https://issues.apache.org/jira/browse/JEXL-307?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17032339#comment-17032339
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Dmitri Blinov commented on JEXL-307:
------------------------------------
The following test case fails with - *_variable 'x' is undefined_*
{code:java}
@Test
public void testCapturedShaded() throws Exception {
JexlFeatures f = new JexlFeatures();
f.lexical(true);
JexlEngine jexl = new JexlBuilder().strict(true).features(f).create();
JexlScript script = jexl.createScript("{var x = 10; } var a =
function(var b) {for (var q : 1 ..10) {return x + b}}; a(32)");
JexlContext jc = new MapContext();
jc.set("x", 11);
Object result = script.execute(null);
Assert.assertEquals(result, 43);
}
{code}
The expected behaviour is to resolve context variable 'x'
> 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: Major
> 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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