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https://issues.apache.org/jira/browse/JEXL-429?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17884502#comment-17884502
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Henri Biestro commented on JEXL-429:
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Ternary and namespace syntax is a grammar ambiguity pothole.
To fix this, a new hint will consider if the function name (the fun in ns :
fun()) is a variable which solves this precise case.
A new feature flag is introduced, 'namespace identifier' which considers a
namespace identifier as one token that is only when 'ns:fun' is written with no
space in between. Default remains false but, as per recommendation, one should
be explicit about which feature, option, security and arithmetic is used.
> Ternary expression regression
> -----------------------------
>
> Key: JEXL-429
> URL: https://issues.apache.org/jira/browse/JEXL-429
> Project: Commons JEXL
> Issue Type: Bug
> Affects Versions: 3.4.0
> Reporter: Shuo Geng
> Assignee: Henri Biestro
> Priority: Major
>
> {*}Regression{*}:
> {code:java}
> const f = function(a) {return a;};
> b ? b : f(2);{code}
> When the script is executed, there is a variable *b* in the jexl context with
> value as {*}1{*}.
> The script returns 1 as expected in 3.3, but throws a parsing exception in
> 3.4.0.
> {code:java}
> parsing error in ';'
> at org.apache.commons.jexl3.JexlEngine.createScript(JexlEngine.java:411)
> {code}
> If the ternary statement is changed to {{b ? f(2) : b;}} , there is no issue
> and 2 is returned as expected.
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