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 * Undertow Subsystem 1.4.13 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