adding a manifest attribute other than Main-Class to an assembly

[Dan Tenenbaum <dt...@systemsbiology.org>]

I need to add a custom attribute to the manifest of the jar produced by
mvn assembly:assembly
The attribute should look like this in the MANIFEST.MF file:
Cytoscape-Plugin: 
org.systemsbiology.informaticsCore.uddiBrowser.cytoscape.UDDIBrowserPlugin

My plugin is configured as follows:
            <plugin>
                <artifactId>maven-assembly-plugin</artifactId>
                <configuration>
                    <archive>
                        <manifest>
                            
<Cytoscape-Plugin>org.systemsbiology.informaticsCore.uddiBrowser.cytoscape.UDDIBrowserPlugin</Cytoscape-Plugin>
                        </manifest>
                    </archive>
                    <descriptors>
                        
<descriptor>cytoscape-plugin-assembly.xml</descriptor>
                    </descriptors>
                </configuration>
            </plugin>

But of course Maven chokes on the line:
<Cytoscape-Plugin>org.systemsbiology.informaticsCore.uddiBrowser.cytoscape.UDDIBrowserPlugin</Cytoscape-Plugin>
Because it doesn't understand that tag.
I changed it to:
<mainClass>org.systemsbiology.informaticsCore.uddiBrowser.cytoscape.UDDIBrowserPlugin</mainClass>

and it worked as expected, EXCEPT that the line was wrapped as follows:
Main-Class: org.systemsbiology.informaticsCore.uddiBrowser.cytoscape.U
 DDIBrowserPlugin
That is, it is on two lines, and there is a space at the beginning of 
the second line. I don't think the jvm will recognize that as a valid 
main class attribute.

So, my two questions:
How do you get a custom attribute put in to a jar created by an 
assembly? And how do you ensure that there is no line wrapping like above?
Thanks




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