Unknown option -XPatternSig used in warning

[Bas van Dijk]

On 9/19/07, Simon Peyton-Jones <simonpj at microsoft.com> wrote:
> I believe this is a known problem with OPTIONS_GHC, and will work on the command line.  I think Ian is working on it.  Ian?

Via the command line I get the same problem:

 $ ghci -XPatternSigs PatternSig.hs
GHCi, version 6.7.20070915: http://www.haskell.org/ghc/  :? for help
ghc-6.7.20070915: unrecognised flags: -XPatternSigs
Usage: For basic information, try the `--help' option.

Bas