アプデが来たのでen.localeからTSV作ってみるべと思ったら、エラーになる……
rubyはサッパリな俺のために誰か何が問題か教えてくれ。

./packunpack.rb:135:in `block (2 levels) in read': invalid byte sequence in UTF-8 (ArgumentError)
from ./packunpack.rb:134:in `each'
from ./packunpack.rb:134:in `with_index'
from ./packunpack.rb:134:in `block in read'
from ./packunpack.rb:130:in `open'
from ./packunpack.rb:130:in `read'
from ./packunpack.rb:30:in `initialize'
from ./packunpack.rb:312:in `new'
from ./packunpack.rb:312:in `<main>'