Allows the use of part of the language keywords?

[Dominikus Dittes Scherkl via Digitalmars-d]

On Sunday, 28 August 2016 at 13:35:59 UTC, ketmar wrote:
> it has nothing to do with compiler: parser skips comments when 
> peeking tokens. the only thing affected is simplistic syntax 
> highlighter that can't do proper lookup.

I have anyway never seen the necessity of the keyword "body" 
anyway. I fact, I very much dislike it. You could write a function

Fn()
in {}
out() {}
{}

or even better (or at least what I would prefer):

Fn()
{}
in {}
out() {}

The parser will always take the block without preceeding keyword 
as the body.
If you leave out "in" and "out", you also don't need the keyword 
body. As soon as you add a contract, suddenly you have to add 
that nasty "body". As I learned D this was confusing and I still 
fail to see the benefit.
If you really feel the need to make explicit where the body 
starts, you can add a comment:

Fn()
in
{
}
// body:
{
}
out()
{
}