[Haskell-cafe] RFC: "Native -XCPP" Proposal

[Richard A. O'Keefe]

This is *so* reminiscent of why fpp exists.
(http://www.netlib.org/fortran/fdfpp.tgz)
People used to use cpp with Fortran, but it
really didn't fit Fortran lexical structure
very well, and cpps were different.  So...

I think it's important that there be *one*
"cpp" used by Haskell.  fpp is under 4 kSLOC
of C, and surely Haskell can do a lot better.