should int/short/byte implicitly cast to dchar/wchar/char?

[Steven Schveighoffer]

On Mon, 16 May 2011 13:51:55 -0400, Steven Schveighoffer  
<schveiguy at yahoo.com> wrote:

> Currently, this works:
>
> void foo(dchar i)
> {
> }
>
> void main(string[] args)
> {
>      foo(args.length);
> }

Damn, this originally started out as argc and argv, and I forgot how D  
accepts arguments, so I switched it to this.  Unsigned ints are  
convertable to dchar, but signed ones are not (except for a couple cases,  
which doesn't make sense).

For example, this fails:

dchar c = -1;
foo(-1);

But this passes:

int i = -1;
dchar c = i;

So clearly there are some inconsistencies that need to be fixed, but the  
situation is not as bad as I thought it was.

-Steve