allMembers broke for __

[Timon Gehr]

On 18.06.2018 00:55, Walter Bright wrote:
> On 6/15/2018 11:08 PM, DigitalDesigns wrote:
>> When an identifier starts with __, allMembers does not return it. This 
>> is very bad behavior! It can silently create huge problems if the 
>> programmer is not aware of the bug.
> 
> 
> It's not a bug, it's quite deliberate:
> 
>    https://github.com/dlang/dmd/blob/master/src/dmd/traits.d#L1385
> 
> 
> Identifiers starting with __ are reserved for the implementation:
> 
>    https://dlang.org/spec/lex.html#identifiers
> 
> They have implementation-defined behavior. Do not use them in user code.

The code you linked to does it. :)