-recursive never ends on directory without java source files

From Guilherme J.:

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if I run the program recursively for one directory that does not contain any java source, is it supposed to output any message warning me of that? I am asking this because I had problems "waiting" for the program that would never exit!

I don't know if this is a feature or a bug
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Confirmed, it is a bug and has nothing todo with recursive links or something like that.