Perhaps it makes sense to scan hackage to find all the different CPP idioms that are actually used in Haskell code, if it is a small/well-defined set it may be worth writing a simple custom preprocessor.

Alan

On Wed, May 6, 2015 at 3:03 PM, Mikhail Glushenkov <the.dead.shall.rise@gmail.com> wrote:

On 6 May 2015 at 14:25, Austin Seipp <austin@well-typed.com> wrote:
> 2) The lexing rules for C and Haskell simply are not the same in
> general.

One area where this is irritating is that it makes it impossible to
use Haskell multiline strings together with CPP.

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