proposal: short => rewrite for function declarations

[Q. Schroll]

On Saturday, 10 October 2020 at 20:43:55 UTC, Steven 
Schveighoffer wrote:
> I think if D is going to go this route, it needs to at least 
> get rid of the ambiguity of => {return expr;}, which is 
> currently "return a delegate/function that returns expr".

Agreed. I've filed an enhancement request to make => { } illegal 
in 2017: https://issues.dlang.org/show_bug.cgi?id=17951
It's a long-standing hurdle for newcomers and nobody really needs 
double delegates of this form on such a regular basis that such a 
hurdle for newcomers is justified.