Report unrecognized pragmas earlier

In the following example, I have a typo in the UndecidableInstances pragma (LANGUAGE is misspelled), however, GHC only reports that UndecidableInstances is required. This is very confusing, since it appears that I have enabled that pragma.

{-# LANGUAGE FlexibleContexts     #-}
{-# LANGUAGE FlexibleInstances    #-}
{-# LANUGAGE UndecidableInstances #-}

instance (Num [a]) => Num a

Only when I comment out the instance does GHC report that there is an unrecognized pragma, at which point it became obvious that there was a typo. It would be very helpful if GHC reported the warning about the unrecognized pragma before or at the same time as the error about needing UndecidableInstances.

Trac metadata

Trac field	Value
Version	8.0.2
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
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