Examples with language extensions

Are we okay with examples in the GHC user guide uses language extensions?

The documentation has this code

inc :: Counter a -> Counter a
inc (NewCounter x i d t) = NewCounter
    { _this = i x, _inc = i, _display = d, tag = t }

which could be written

inc :: Counter a -> Counter a
inc NewCounter{..} = NewCounter{ _this = _inc _this, .. }

if we're okay with that tradeoff.

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Trac field	Value
Version	8.2.1
Type	FeatureRequest
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Documentation
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