Why do we still need/use .di 'header' files?

[Don Clugston]

Lionello Lunesu wrote:
> Wouldn't it be possible to make a tool that dumps the symbols from 
> objs/libs, undoing any name-decoration?
> 
> And wouldn't it be possible to built that tool right into the compiler?
> 
> I don't know if protection attributes are being encoded in a decorated 
> name, but that issue wouldn't be hard to overcome.
> 
> L.

Protection attributes and many other things are not in the decorated names.
What about templates, and conditional compilation?