RE: {-# LINE 100 "Foo.hs #-} vs. # 100 "Foo.hs"

Indeed. Or do you want to tell me that you are going to break one of my favourite programs?

[ code deleted ] # 111 "Foo.hs"

Actually the cpp-style pragma is only recognised if the '#' is in the leftmost column and is followed by optional spaces and a digit. It's quite hard to write one of these in a legal Haskell program, but not impossible. Simon