Greetings, When looking at the GHC lexer (Lexer.x), there's:
> $unispace = \x05 -- Trick Alex into handling Unicode. See alexGetChar. > $whitechar = [\ \n\r\f\v $unispace] > $white_no_nl = $whitechar # \n > $tab = \t Scrolling down to alexGetChar and alexGetChar', we see the comments: > -- backwards compatibility for Alex 2.x > alexGetChar :: AlexInput -> Maybe (Char,AlexInput) > > -- This version does not squash unicode characters, it is used when > -- lexing strings. > alexGetChar' :: AlexInput -> Maybe (Char,AlexInput) What's the reason for these? I was under the impression that since 3.0, Alex has natively supported unicode. Is it just dead code? Could all the hex $uni* functions be removed? If not, why not? -- Mateusz K. _______________________________________________ ghc-devs mailing list [email protected] http://www.haskell.org/mailman/listinfo/ghc-devs
