Variable declaration primary expression

[Andre]

On Monday, 20 January 2025 at 20:41:42 UTC, IchorDev wrote:
> Someone brought up this clever idea here: 
> https://github.com/dlang/dmd/pull/20653#issuecomment-2581474608
> What does everyone think about being able to declare variables 
> in expressions? Is there any pre-existing syntax that blocks us 
> from being able to easily do this?

If I understand it correctly this would solve my issue 
https://github.com/dlang/dmd/issues/18890

```d

with (auto p = new Panel())
{
	parent = this;
	text = "bla";
	with (new Button())
	{
		parent = p; // Here p is needed
		text = "bla2";
	}
}
```

The syntax `with (auto p = new Panel())` is currently not allowed.