Most options for the jmod tool should be last one wins, to be consistent with the JDK tool convention, 8168149 [1]. Excludes is the only repeatable option.
Given the existing usage of JOpt Simple, the most straight forward way to achieve the last-one-wins behaviour is to drop the withValuesSeparatedBy() from the OptionSpec have have the ValueConverters themselves do the separation, if any. That way all options can be made repeatable and the last element of the list of the option’s values will be the final one on the command line. http://cr.openjdk.java.net/~chegar/8168149.00/ -Chris. [1] https://bugs.openjdk.java.net/browse/JDK-8168149
