Hi Neil, I'm having some problems using filepath in GHC. I think some of these we might have discussed before, but if so I've forgotten what the conclusion was, if any, and I can't see the answers in the docs. The first is this: Prelude System.FilePath> "." "foo" "./foo" which means we get things like [2 of 2] Compiling GHC.Foo ( ./GHC/Foo.hs, ./GHC/Foo.o ) rather than [2 of 2] Compiling GHC.Foo ( GHC/Foo.hs, GHC/Foo.o ) Is there a reason the result shouldn't be "foo"? Possibly relatedly, the current directory seems to be "" rather than ".". This turns up in at least a couple of areas: Prelude System.FilePath> normalise "." "" Prelude System.FilePath> splitFileName "foo" ("","foo") I expected "." and "./" respectively, rather than the ""s. This causes problems when giving arguments to library functions or programs, which generally want "." or "./" rather than "", and if you are displaying a directory to the user then you again probably don't want to print "". As an example, I had a problem where GHC was running "gcc -I foo" rather than "gcc -I. foo". This looks like a straightforward bug to me: Prelude System.FilePath> normalise "./" "/" I'm not convinced by Prelude System.FilePath> isValid "" True I don't think I could "create a file like it". Finally, could splitSearchPath please take an extra argument, a list of FilePaths, to be appended to the result if it ends with a : or ; (as appropriate)? Thanks Ian