I'm trying to pass -Xlint:all to all Sun compiler versions that support it, i.e. starting from 1.5 and theoretically for all future versions. Right now I only can achieve this by specifying several compilerarg values, like javac1.5, javac1.6 and so on, all with the same value. It would be nice to specify "javac1.5+" or something like this to mean javac version 1.5 and later. Maybe you also want limited ranges, like "javac1.5-javac1.7", but I guess once you have two ends, the alternative of listing all versions becomes acceptable.