Show instance for Ratio is wrong
GHCi> :m Data.Ratio
GHCi> show (1%2)
"1%2"
Hugs> :l Data.Ratio
Hugs> show (1%2)
"1 % 2"
The Haskell report specifies (http://haskell.org/onlinereport/ratio.html):
instance (Integral a) => Show (Ratio a) where
showsPrec p (x:%y) = showParen (p > ratPrec)
(showsPrec (ratPrec+1) x .
showString " % " .
showsPrec (ratPrec+1) y)
This effects the nofib suite, where the expected.stdout files are based on GHC's incorrect Ratio implementation.
Tested only on 6.6.1.