On Mon, May 9, 2011 at 3:49 PM, Daniel Fischer
I would like to propose the elimination of the special error case
gcd 0 0 = error "Prelude.gcd: gcd 0 0 is undefined"
to replace it with
gcd 0 0 = 0
(which would be an automatic consequence of removing the above line).
In my email archives, I found two previous threads on the subject. Both ended up in favor of the proposal: http://www.haskell.org/pipermail/haskell/2001-December/008560.html http://www.haskell.org/pipermail/haskell-cafe/2009-May/060880.html As a result of the latter discussion, a ticket was opened on GHC's trac: http://hackage.haskell.org/trac/ghc/ticket/3304 But it was eventually closed for lack of attention. So if someone actually follows through with this as an official libraries submission (with a patch, deadline, etc.), the odds seem in favor of it. Best, -Judah