>> I updated the code on the wiki page: the previous version didn't handle
>> prefix negation - did you implement that yourself in HLint?
>
> No, I didn't implement prefix negation in HLint - it never came up as
> an issue. Perhaps the underlying HSE library dealt with it for me -
> Niklas would know.
In haskell-src-exts (and haskell-src, since that's inherited), unary
minus binds tighter than any infix operator:
> exp0b :: { PExp }
> : exp0b qop exp10b { InfixApp $1 $2 $3 }
> | dvarexp { $1 }
> | exp10b { $1 }
> exp10b :: { PExp }
> : 'case' exp 'of' altslist { Case $2 $4 }
> | '-' fexp { NegApp $2 }
> | 'do' stmtlist { Do $2 }
> | 'mdo' stmtlist { MDo $2 }
> | fexp { $1 }
It has never come up as a problem. Guess that's a point in case for
getting rid of unary minus as an operator. :-)
Cheers,
/Niklas
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