[Haskell-cafe] Laziness bug in Data.List.intersperse (was: ANNOUNCE: text 0.8.0.0, fast Unicode text support)

[Daniel Fischer]

On Wednesday 01 September 2010 21:29:47, Daniel Fischer wrote:
> that's where you definitely get a space leak, because
>
> intersperse             :: a -> [a] -> [a]
> intersperse _   []      = []
> intersperse _   [x]     = [x]
> intersperse sep (x:xs)  = x : sep : intersperse sep xs
>
> isn't lazy enough.

Ticket created, http://hackage.haskell.org/trac/ghc/ticket/4282
I'm not keen on subscribing to libraries@ to follow the official proposal 
process, any takers?