7.10 uses a newer version of Unicode, which could explain differences.

On Thu, Feb 19, 2015 at 12:19 AM, Kazu Yamamoto <[email protected]> wrote:
> Hi,
>
> It seems to me that some characters of GHC 7.10.1RC2 behave
> differently from those of GHC 7.8.4:
>
>                           7.8.4   7.10.1RC2
> isLower (char 170)        True    False
> isSymbol (chr 182)        True    False
> isPunctuation (chr 182)   Fase    True
>
> Is this intentional?
>
> I noticed this because I received a bug report:
>
>         https://github.com/kazu-yamamoto/word8/issues/3
>
> As you can see, 167 also behaves differently.
>
> --Kazu
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