Haskell File name matching

In chapter 8 of Real World Haskell.

{-

File name matching

Many systems-oriented programming languages provide library routines that let us match a file name against a pattern, or that will give a list of files that match the pattern. In other languages, this function is often named fnmatch.) Although Haskell's standard library generally has good systems programming facilities, it doesn't provide these kinds of pattern matching functions. We'll take this as an opportunity to develop our own.

-}


 Really?  I will check the current standard library.