[RFC] Support Unicode characters in instance Show String

[Henning Thielemann]

On Thu, 8 Jul 2021, Hécate wrote:

> I guess this is the perfect time to come up with a Render typeclass that 
> targets end-users rather than satisfying 'read . show = id'.
>
> chessai: Could the CLC appoint someone to start working on something? 
> This would be pretty useful to unify the ecosystem (instead of having 
> custom Outputable, Render, etc).

The question is, whether such a one-fits-all library actually serves the 
needs of the users. Actually there is already 'printf' which is intended 
for formatting end-user output. You can write your own PrintfArg 
instances. Today I am using custom Format classes per project.