We need an internal keyword.

[Laurent Tréguier]

On Sunday, 21 October 2018 at 23:50:57 UTC, 12345swordy wrote:
> If the cost out way the benefits then I simply introduce the 
> "strict" keyword to avoid code breakage, or introduce the 
> optional module scoping.
>
> -Alex

Looking at the dlang.org page about visibility attributes, the 
`package` keyword can have an argument specifying which package 
has access to the symbol.
What if `private` could have an argument dictating which other 
symbol could have access to that private symbol ?
Setting this argument to the private symbol's own class would 
effectively make it strictly private. This wouldn't require a new 
keyword, and that syntax is not valid D code so it wouldn't break 
any existing code.
Though it would look a bit weird, and it would also basically 
introduce a sort of "friend" feature.

I don't know, that was just a random thought that crossed my mind 
just now.