@ David Yes, and No! the binary representation in the text file, I'm pretty sure still will be in some byte/char/8bit length, the problem is how this is encoded. As fast as there are string/char functions and so on involved You must know how it was implemented. I was tempted to make a hasty comment, but the sanity hold me off, and I locked UTF up a bit on
Wikipedia UTF It's a "bit" complicated, least to say.
As a fast and dirty trick, I would open up your text file with a HEX editor of some kind, try other applications like Wordpad or MS Office, Open Office, Google translator function on Internet usw. Check the differences and or put these different code into your test for GameStudio until it gets right. Then you know at least what application you have to use to create textfiles for the game.
Your example reminds me when I tried to translate a Japanese text file, I had to try out some applications before the cut and pasted text was considered anything else then (/%&&/%¤"#% by Google translator.