[Haskell] Read Instances for Data.Map and Data.Set

[Johannes Waldmann]

Simon Marlow wrote:

> the Show instance outputs valid Haskell syntax that can be included in a
> program (assuming appropriate imports, and possibly an appropriate type
> signature). 

The Data.Map Show instance is breaking exactly this requirement
(by using braces), and that's why I want to avoid it.
See my post cited earlier.
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-- Johannes Waldmann -- Tel/Fax (0341) 3076 6479/80 --
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