问题
What versions of Antcontrib support <for> and also <var unset="true" /> in Antcontrib?
(Or where can I go to find out that information?)
回答1:
The task docs are here, but they don't say which versions of the library support which functions. However, there haven't been any new releases for years, so I suspect you already have the latest.
Note that there is no <var unset="true"/>, it's <Variable unset="true"/>. Maybe that's your problem.
回答2:
Version 1.0b2 has the for task, but you have to go in and uncomment it from the antcontrib.properties file in the jar. version 1.0b3 removes that task (from what I can tell). Not sure about unset, but 1.0b2 has the var task.
Hope that answers your question.
来源：https://stackoverflow.com/questions/1307132/antcontrib-for-and-var-unset-true-in-ant