This revealed that JBoss AS 7 / Tomcat seems to have a bug in its EL implementation. Even GlassFish doesn't implement this correctly yet. A bug has already been posted there, but for some Tomcat 7 version (and JBoss AS 7) this could already have been fixed. You can find all the details in the post over at SO. I'd be glad if anyone here could comment on that.
1. Which concrete version of Tomcat are JBoss AS 7.0.0, 7.0.1, and 7.0.2 based on?
2. Which concrete version of Tomcat is the new JBoss AS 7.1.0 based on?