#8269: Suggest LANGUAGE pragmas instead of -XFoo
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Reporter: nomeata | Owner:
Type: feature request | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 7.6.3
Keywords: | Operating System: Unknown/Multiple
Architecture: Unknown/Multiple | Type of failure: None/Unknown
Difficulty: Unknown | Test Case:
Blocked By: | Blocking:
Related Tickets: |
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Minor, but still: Currently GHC says:
{{{
readFail037.hs:4:1:
Too many parameters for class ‛Foo’
(Use -XMultiParamTypeClasses to allow multi-parameter classes)
In the class declaration for ‛Foo’
}}}
Maybe it is just me, but generally I find LANGUAGE pragmas are the way to
go. So I think it should read
{{{
readFail037.hs:4:1:
Too many parameters for class ‛Foo’
(Use {-# LANGUAGE MultiParamTypeClasses #-} to allow multi-parameter
classes)
In the class declaration for ‛Foo’
}}}
Note that it is easier to copying `MultiParamTypeClasses` (by double-
clicking), entering "-X", and pasting, than copying
`XMultiParamTypeClasses` and removing the X again.
If noone complains or someone says that it is a good idea I’ll fix it
myself.
--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8269>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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