Created attachment 94561 [details]
Project which reproduces the problem

I am attaching a Maven project which was generated by the Spring Roo framework - it is one of the samples shipping with the framework. Steps:
1. Open this project in the IDE
2. Open file Web Pages/WEB-INF/views/controller-index.jspx
3. After editor initialization completes, you will see that the first line displays a wavy underline with error "package javax.servlet.jsp does not exist ..."

This is because the project does not specify a dependency on the JSP API (servlet API is used). While this situation is weird in a project that uses JSPs, it is probably valid. The workaround is to add the following dependency:

<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>com.springsource.javax.servlet.jsp</artifactId>
    <version>2.1.0</version>
</dependency> 

and rebuild the project. However, it would be nice if this worked, and the error was not displayed, even if the JSP API is not on the project classpath. Could we somehow add the JSP API (the copy that we ship with the IDE in enterprise/modules/ext) to the JSP editor's classpath, in case it is not found on the project classpath?