[jbosstools-issues] [JBoss JIRA] (JBIDE-23891) EL syntax error: Expecting Expression on EL string concat operator

[Thies W. (Jira)]

    [ https://issues.redhat.com/browse/JBIDE-23891?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14075272#comment-14075272 ] 

Thies W. commented on JBIDE-23891:
----------------------------------

This issue still occurs in 4.15.Final.
IMHO priority is NOT minor (is used quite often in JSF/EL) - and should be simple to fix.

> EL syntax error: Expecting Expression on EL string concat operator
> ------------------------------------------------------------------
>
>                 Key: JBIDE-23891
>                 URL: https://issues.redhat.com/browse/JBIDE-23891
>             Project: Tools (JBoss Tools)
>          Issue Type: Bug
>          Components: jsf
>    Affects Versions: 4.4.2.Final
>         Environment: Windows 10
> Eclipse Neon.2 (4.6.2)
> JBoss Tools 4.4.2.Final (Marketplace)
> JavaEE 7
>            Reporter: Tran Minh Do
>            Priority: Minor
>             Fix For: 4.16.x
>
>
> The EL 3.0 specification [1] states
> String Concatenation Operator - A += B
> To evaluate A += B
> ■ Coerce A and B to String.
> ■ Return the concatenated string of A and B.
> Used on a JSF Tag like
> {code:java}
> <h:outputText value="#{'foo' += 'bar'}" />
> {code}
> leads to following warning:
> *EL syntax error: Expecting expression.*
> on the *=* part of the *+=* operator.
> [1] http://download.oracle.com/otn-pub/jcp/el-3_0-fr-eval-spec/EL3.0.FR.pdf



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