[m-rev.] for review: better error messages for lambda exprs

[Mark Brown]

On Wed, May 11, 2016 at 12:11 PM, Paul Bone <paul at bone.id.au> wrote:
> Philosophically I support making Mercury easier to use, especially for new
> developers.

I can't tell what you mean by "easier to use". Do you mean that if the
set of legal programs is restricted, the language is harder to use?

> I support the change, I would also be happy with Peter's alternative of
> providing a hint to developers in the error messages involving these
> symbols.

Can you give an example of what the hints would look like?

Mark