Error message formatter for range primitives

[Robert Schadek]

On Wednesday, 5 January 2022 at 12:32:10 UTC, Elronnd wrote:
> Cool project!
>
> The mechanism you use is very special-purpose, in that you have 
> to write a lot of specific code to get such nice output.  
> There's a trick I came up with, that I've been meaning to post 
> about, which gives slightly less nice output, but requires no 
> manual effort and is completely general.
>
I would guess with my library your manual effort, at least for 
range primitives, is down to

```sh
dub add range_primitives_helper
```

;-)