I am porting a JSP 1.1. app from Weblogic 5.1 to JBoss 4.0. And I find that the JSP engine throws error complaining "attribute <such-and-such> invalid according to TLD" for even attributes defined in the super class of the tag.
Even though a tag handler can be derived from another, the TLD declarations do not reflect any inheritance. Every attribute of a tag must be declared in its TLD entry regardless of where the attribute mutator is defined.