Permitting trailing commas for record syntax ADT declarations

[Daniel Trstenjak]

On Tue, Sep 23, 2014 at 10:03:11AM +0200, Johan Tibell wrote:
> I must say that requiring a language pragma makes the feature quite a bit more
> heavy weight. We're not changing the meaning of any existing programs, just
> allowing some new ones.

Without using a new language pragma you will get more or less telling
error messages if you're trying to compile code using this new syntax
with older ghcs.

Using a new language pragma will give you quite telling error messages.


Greetings,
Daniel