[fpc-pascal] Caller agnostic procedure variables

[Ryan Joseph]

> On Feb 16, 2022, at 2:46 AM, Sven Barth via fpc-pascal <fpc-pascal at lists.freepascal.org> wrote:
> 
> // nested function/procedure/routine variable
> type
>   TFoobarNested = function: LongInt is nested;
> 
> var
>    f: TFoobarFuncRef;
> begin
>   // anonymous function/procedure/routine
>   f := function: LongInt
>         begin
>         end;
> end;

"However assigning a nested function variable to a function reference is much harder.
Assigning a function reference to a nested function variable is hard as well. "

This means if you expanded your example with:

var
  n: TFoobarNested;
begin
  f := n;

THAT would be hard? I've never passed around nested function vars before so I don't really know the limitations of this. The important thing is the primary use case works.

Regards,
	Ryan Joseph