darcs patch: Fix Unicode bug in haskell-src
dons at galois.com
Wed Jul 30 17:59:44 EDT 2008
Looks good to me. Ian, do you want to apply this?
> Language.Haskell.Parser currently can't parse modules with unicode symbols
> in operators, which are allowed by the haskell98 standard.
> The attached patch is a small change in the lexer code to fix this.
> Since parseModule expects a String of Unicode codepoints as usual,
> examples/hsparser.hs will still raise errors on modules that use unicode,
> because it doesn't decode the source.
> The correct behaviour, assuming an utf-8 source, can be tested like this:
> > import System.IO.UTF8 as U -- from utf8-string
> > import Language.Haskell.Parser
> > import Language.Haskell.Pretty
> > main = do file <- U.readFile "module.hs"
> > case parseModule of
> > ParseOk m -> U.putStrLn (prettyPrint m)
> > e@(ParseError _ _) = print e
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