Dear all, I recently stumbled upon something that I think should be added to the GHC wishlist. Not knowing where to put it, I will put it here. As there is deriving(Show) for most basic data types, wouldn't it be possible to have something similar but then deriving(Pretty). When printing ASTs it could make it much easier to look at the output. With regards, Christophe -- Christophe Poucet Ph.D. Student Phone:+32 16 28 87 20 E-mail: Christophe (dot) Poucet (at) imec (dot) be Website: http://notvincenz.com/ IMEC vzw – Register of Legal Entities Leuven VAT BE 0425.260.668 – Kapeldreef 75, B-3001 Leuven, Belgium – www.imec.be *****DISCLAIMER***** This e-mail and/or its attachments may contain confidential information. It is intended solely for the intended addressee(s). Any use of the information contained herein by other persons is prohibited. IMEC vzw does not accept any liability for the contents of this e-mail and/or its attachments. **********