[jboss-jira] [JBoss JIRA] (WFLY-8642) rewrite handler handles references to contextual values incorrect

[Markus Stier (JIRA)]

Markus Stier created WFLY-8642:
----------------------------------

             Summary: rewrite handler handles references to contextual values incorrect
                 Key: WFLY-8642
                 URL: https://issues.jboss.org/browse/WFLY-8642
             Project: WildFly
          Issue Type: Bug
          Components: Web (Undertow)
    Affects Versions: 10.1.0.Final
         Environment: * Windows 10
* Wildfly 10.1.0 Final
            Reporter: Markus Stier
            Assignee: Stuart Douglas


Context:
A URL in the form of "http://somehost.org/path/a/b" should be rewritten to "http://somehost.org/newpath?param1=a&param2=b"

The following filter should perform this rewrite:
{code}
<expression-filter name="rewrite-path" expression="regex('^/path/([^/]+)/(.*)/?$') -> rewrite('/newpath'); set(attribute='%{QUERY_STRING}', value='param1=$1&amp;param2=$2'); done()"/>
{code}

Problem:
The output is (according to access-log);
{code}
somehost.org "GET /newpath?param1=b 
{code}
* param1 is assigned to the value of $2
* param2 is dropped completly





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