It's not so much a bug as it is code that is less than clear; while in this case cleaning it up is a good idea for other reasons, I suspect if we used that as a general metric most of GHC would have to be rewritten :) Great. I’d be delighted to look at it if anyone is motivated to give a brief standalone summary of the problem (and ideally a proposed solution) Simon From: Brandon Allbery [mailto:allbery.b@gmail.com] Sent: 07 November 2011 13:56 To: Simon Peyton-Jones Cc: Malcolm Wallace; libraries Mailing List Subject: Re: Proposal #3339: Add (+>) as a synonym for mappend On Mon, Nov 7, 2011 at 05:14, Simon Peyton-Jones <simonpj@microsoft.com<mailto:simonpj@microsoft.com>> wrote: If there's a bug in GHC, or a feature request, can someone make a ticket with a standalone reproducible test case, please? I have not been following the twists and turns of this discussion. It's not so much a bug as it is code that is less than clear; while in this case cleaning it up is a good idea for other reasons, I suspect if we used that as a general metric most of GHC would have to be rewritten :) -- brandon s allbery allbery.b@gmail.com<mailto:allbery.b@gmail.com> wandering unix systems administrator (available) (412) 475-9364 vm/sms