Formal Review of std.regex (FReD)

[Andrei Alexandrescu]

On 10/9/11 2:26 AM, Christian Kamm wrote:
> Andrei Alexandrescu wrote:
>
>> On 10/8/11 3:34 PM, Dmitry Olshansky wrote:
>>> I've found out what caused my builds to break. The thing is that both
>>> std.file&  std.stdio use fully qualified std.c.stdio.func calls but
>>> never actually import std.c.stdio in any way. I wasn't even aware that's
>>> possible.
>>
>> That may be a bug in the compiler. A symbol shouldn't be visible unless
>> e.g. publicly imported from an imported module (could that be the case)?
>
> It's definitely a bug. Once an import is processed, the package is visible
> globally as long as the parent package is accessible. This compiles:
>
> touch dmd2/src/phobos/std/empty.d
>
> a.d:
> import std.stdio;
>
> b.d:
> import std.empty;
> void main() { std.stdio.writeln("hi!"); }

Hm, this is important. But what is the contribution of a.d to the 
example? Do you compile it together with b.d?

Andrei