[Issue 24088] A nested function that returns a tuple that is written with short syntax function does not want to compile.

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=24088

Nick Treleaven <nick at geany.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |rejects-valid

--- Comment #2 from Nick Treleaven <nick at geany.org> ---
Reduced:
```
struct S(T) {}

void main()
{
    S!int f() => S!int();
}
```
I think I have a fix for isDeclarator in parse.d, will submit tomorrow.

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