[jboss-jira] [JBoss JIRA] (WFLY-6263) Apostrophe in an attribute with multiple EL parts breaks function lookup

Apostrophe in an attribute with multiple EL parts breaks function lookup ------------------------------------------------------------------------ Key: WFLY-6263 URL: https://issues.jboss.org/browse/WFLY-6263 Project: WildFly Issue Type: Bug Components: EE, Web (Undertow) Affects Versions: 10.0.0.Final Reporter: Paul Pogonyshev Assignee: Tomaz Cerar Priority: Critical Labels: downstream_dependency Fix For: 12.0.0.Final Attachments: jastow-bug.war.zip, jastow.diff Certain EL pieces result in unexplained org.apache.jasper.JasperException "contains invalid expression(s)" (the exception _does not_ explain what is invalid). After lots of tries, I have narrowed it down: 1) there must be several EL pieces in one string; 2) there must be an apostrophe in between. This looks very similar to bug WFLY-4455. It breaks several pages in our application, blocking upgrade to WildFly 10. Example is attached.