I have to admit, I rather like this suggestion.

-Edward


On Mon, Jan 13, 2014 at 1:42 PM, Krzysztof Gogolewski <
krz.gogolew...@gmail.com> wrote:

> Hello,
>
> As discussed on ghc-devs, I propose to enable -XTypeHoles in GHC by
> default. Rationale:
>
> (1) This way holes are far easier to use; just entering "_" allows to
> check type of a subexpression, no need of adding "-XTypeHoles".
>
> (2) This affects error messages only; i.e. the set of programs that
> compile stays the same - Haskell 2010. The only exception is that if you
> use -fdefer-type-errors, then a program with a hole compiles, but this
> seems fine with philosophy of -fdefer-type-errors.
>
> If so: would you like it to be in 7.8 or wait a cycle? My preference is
> 7.8, two people (John and Richard) suggested 7.10.
>
> -KG
>
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