[Haskell-cafe] FilePath handling [Was: Writing binary files?]

Udo Stenzel wrote:

The same thoughts apply to filenames. Make them [Word8] and convert explicitly. By the way, I think a path should be a list of names (that is of type [[Word8]]) and the library would be concerned with putting in the right path separator. Add functions to read and show pathnames in the local conventions and we'll never need to worry about path separators again.

I even plead for an abstract data type FilePath which supports operations like 'enter a directory', 'go one level higher' and so on.