What's happening with the `in` storage class

[Steven Schveighoffer]

On 6/11/18 7:48 AM, Atila Neves wrote:
> * Currently one has to pass `-dip1000` to get `scope` to do anything. 
> This is opt-in. Any breakages would also be opt-in. I don't think 
> breakage considerations are important here.

Just on this point, there is nothing "opt in" about dip1000. Either all 
the code you use is compiled with dip1000, or it's not. Since it alters 
symbol names, you can't link a library that uses dip1000 against one 
that doesn't, and expect it to work.

For a while, phobos was partly compiled with dip1000 and it was a disaster.

There is going to be a cutoff date at some point, where Phobos is 
compiled with dip1000, and then you are going to have to use an earlier 
compiler to "opt out" of it.

Unless, of course, we can work out how to deal with the symbol name 
adjustments.

-Steve