[jhc] parse error on where with jhc

[J. Garrett Morris]

I'm pretty sure GHC has the right behavior here.  The first approach
would be to insert a semi and attempt to continue parsing, however,
since this causes a parse error I would expect the rule:

L (t:ts) (m:ms) 	 = 	 } : (L (t:ts) ms) 	 if m /= 0 and parse-error(t)
			(Note 5)

(See Section 9.3 in the report)

to be invoked.  This is an interesting test case; I'll have to hold
onto it for my Haskell-like parser!

 /g

On Sat, Aug 29, 2009 at 9:04 AM, David
Roundy<roundyd at physics.oregonstate.edu> wrote:
> The following code gives a parse error on jhc:
>
> configureFlagWithDefault :: String -> String -> String
>                         -> C () -> (String -> C ()) -> C FranchiseFlag
> configureFlagWithDefault n argname h defaultaction j =
>  do whenC amConfiguring $ addHook n defaultaction
>    return $ FF $ Option [] [n] (ReqArg (addHook n . j') argname) h
>    where j' v = do putV $ "handling configure flag --"++n++" "++v; j v
>
> Evidently, jhc wants the where to be less indented than the do block.
> I've no idea how this compares with the language standard, but it
> certainly differs from ghc, so I thought it'd be worth mentioning.  Of
> course, it's not really a nice way to indent...
> --
> David Roundy
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