Aaah I see, it's Java itself that's defaulting to the wrong encoding. Thanks, that helps a lot.

I was using cygwin over SSH, which ordinarily works fine and so I was caught out when this didn't. The file.encoding option works great.

The stdout logging seems to struggle with unicode, replacing accented characters with question marks.

E.g. Y tu mamá también comes out Y tu mam? tambi?n