Andrew Bernard wrote:

It may be valid, but it is just asking for trouble with many tools and utilities and scripts. Funny, I had to check re UNIX. I have been programming UNIX systems for over thirty years and never even imagined a newline in a filename!

Would the OP say why he needs to use newlines in filenames? Something best avoided. I suppose this is not a Haskell matter, but one does have to ask.

The OP must speak for himself, but as far as I am concerned, no reasonable person uses newlines in filenames, ever.

However, the possibility is there, and it may happen that someone unreasonable has created a filename with a newline in it. This may become a security issue if, for example, someone creates a file named