Less than lovely error message

[Simon Peyton-Jones]

Good idea. Done.

Simion

| -----Original Message-----
| From: glasgow-haskell-bugs-bounces at haskell.org
[mailto:glasgow-haskell-bugs-
| bounces at haskell.org] On Behalf Of Jan-Willem Maessen
| Sent: 03 November 2005 15:32
| To: glasgow-haskell-bugs at haskell.org
| Subject: Less than lovely error message
| 
| Mail still occasionally vanishing into the ether.  This has been
| hanging about for a little while now.
| 
| -Jan
| 
| Begin forwarded message:
| 
| > If I mistakenly write a multi-field newtype, the error message
| > which results in 6.4.1 is rather obscure:
| >
| > newtype Empty = E {e :: (IO HT), hfe :: HashFun}
| >
| >
| > HashTest.hs:18:31: parse error on input `,'
| >
| >
| > I'm hoping this wouldn't actually be that difficult to fix to say
| > something like:
| >
| > HashTest.hs:18:31: newtype cannot have multiple fields
| >
| >
| > [I'm writing some QuickCheck tests for Data.HashTable...]
| >
| > -Jan-Willem Maessen
| >
| 
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