Hi, I suggest to improve the documentation for System.FilePath.splitFileName. The sentence "combine is the inverse" (of splitFileName) is misleading, as the following example shows: Prelude System.FilePath> uncurry combine $ splitFileName "bob" "./bob" adding normalize to the result only also gives not (String) identity: Prelude System.FilePath> normalise $ uncurry combine $ splitFileName "./bob" "bob" I suggest to change it to: "combine is the inverse modulo normalise or equalFilePath" Maybe also the following combine examples should be added: combine "./" "bob" == "./bob" combine "." "bob" == "./bob" http://www.haskell.org/ghc/docs/latest/html/libraries/filepath-1.3.0.1/Syste... Cheers Christian