Encoding problems

[MoiMagnus]

When trying to open files edited with other editors, I have:

Could not open /home/username/lexer.mll because it contains invalid utf-8 characters. Please fix it or choose another file

The reason is the presence of special characters as "à" or "é" in the comments of the file (and the usual Linux/Windows problems of encoding of ascii characters).

Is there a way to change the encoding used by ocaml-top to read ? Or even force the opening of the file ? (I don't care if those characters are not displayed correctly)