Jasper generates incorrect Java code when compiling a JSP page which contains 
a custom tag inside a multiline comment, such as the following:

<%@ taglib uri="/test" prefix="test" %>

Hello World
<%
/*
%>

<test:test/>

<%
*/
%>

This is the error message return by the Java compiler:

Generated servlet error:
    [javac] Compiling 1 source file

C:\jakarta-tomcat-5
\build\work\Catalina\localhost\webapp\org\apache\jsp\test_jsp.java:76: illegal 
start of expression
*/
^

The problem is that generateCustomStartTag and generateCustomDoTag insert 
multiline comments of their own.  The Java compiler interprets the "*/" at the 
end of the inserted multiline comment as the end of the multiline comment from 
the JSP page, and returns an error when it finds the closing "*/" from the JSP 
page.

I will attach a patch that fixes this.