[Pharo-project] Write accentuate characters in file

Hello, A small question I have: how can I write a "é" character in a file and >really< get it in Mac OS? I tried with: FileStream newFileNamed: 'test.txt' do: [ :each | each nextPutAll: 'ééé' ] and got: '√©√©√©'. I also tried with FileSystem and got : 'ÈÈÈ'. I do not see another way to do that ... Regards, Adrien.