Hi Bjarte,

I've applied your fix and am copying this message to Kevin Hammond
(the current library Czar).

Alastair

> Hi
> 
> I just fetched the hugs.tar.gz (Hugs BETA97103) from haskell.org and
> noticed that a small bug in lib/List.hs hasn't been corrected, see
> attached emails about the same (and other) problem in GHC.  Summary:
> In Hugs the exports are okay, but `List.unionBy' must be patched to
> this:
> 
> unionBy :: (a -> a -> Bool) -> [a] -> [a] -> [a]
> unionBy eq xs ys =3D xs ++ foldl (flip (deleteBy eq)) (nubBy eq ys) xs
> -- new code:                                        ^^^^^^^^^^^^^
> -- old code: ys
> 
> Sigbj=F8rn's reply also went to John Peterson, but since haskell.org was
> down at the time he may not have received it.  But since this is
> actually a bug in the 1.4 Library Report correcting it would mean
> giving up compliance... :-)
> 
>   Bjarte
> --
> Bjarte M. �stvold                             [EMAIL PROTECTED]
> Dept. of Computer and Information Science     +47 73 59 44 83 (tel)
> Norwegian Univ. of Science and Technology     +47 73 59 44 66 (fax)
> Gl�shaugen, N-7034 Trondheim, Norway

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