There are other gotchas with CPP (e.g. the backslash-at-the-end-of-the-

#860: CPP fails when a macro is used on a line containing a single quote character -------------------------------------+------------------------------------- Reporter: ketil@… | Owner: Type: feature request | Status: new Priority: lowest | Milestone: ⊥ Component: Compiler | Version: 6.4.2 Resolution: | Keywords: cpp quote | prime Operating System: Unknown/Multiple | Architecture: Type of failure: GHC rejects | Unknown/Multiple valid program | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by andreas.abel): line thing). See, for instance, ticket:12391 -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/860#comment:10 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler