Proposal: Add IsList instance for ZipList

Henning Thielemann lemming at
Fri Jun 12 08:27:46 UTC 2015

On Fri, 12 Jun 2015, Andreas Abel wrote:

> I'd like to avoid situations where adding a LANGUAGE pragma changes the 
> semantics of code Is this one?

No, it allows code that would be forbidden without the pragma.

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