[Haskell-cafe] Re: ghc 6.12.1 and regex

On Tue, Dec 29, 2009 at 10:23 AM, David Fox wrote:

On Tue, Dec 29, 2009 at 7:28 AM, David Fox wrote:

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Is anyone else seeing this problem:

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:m +Text.Regex.Posix "\250" =~ "\250" :: Bool True "\250" =~ "[\250]" :: Bool False

Paul Tanimoto suggested TDFA, which gets me most of the way there. However, it can't seem to handle "match anything except a dash":

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"xyz" =~ "^[^-]*$" :: Bool *** Exception: Explict error in module Text.Regex.TDFA.String : Text.Regex.TDFA.String died: parseRegex for Text.Regex.TDFA.String failed:"^[^-]*$" (line 1, column 5): unexpected "]" expecting Failed to parse bracketed string

Hmm this seems to work: "^[^--]$"