Dir.entries replace Unicode character with questionmarks
My basis when testing this is that I have a computer with English OS - codepage Windows-1252. The tests might yield different result if the Windows codepage is different - so please pay attention to that if you are unable to reproduce.
Given a folder named "Foo" which contains a sub-folder "てすと" ("\u3066\u3059\u3068") Dir.entries("Foo") will return:
[".", "..", "???"]
The characters that doesn't fit my filesystem codepage is translated into question marks.
I would have expected the strings returned to be in some Unicode format.