Overlapping and incoherent instances

Niklas Hambüchen mail at nh2.me
Tue Jul 29 09:29:45 UTC 2014

Hi Simon,

> instance {-# OVERLAPPABLE #-} Show a => Show [a] where …

Is the syntax somewhat flexible in where the pragma can be placed?
For example, some might prefer

  instance Show [Char] where …

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