Should scope(exit) be valid outside of a scope?

[Adam Ruppe]

On Tue, May 11, 2010 at 10:18:29PM +0200, Don wrote:
> Currently the scope(exit) doesn't get executed at all (it's bugzilla
> 1894). But I suspect that any such use of scope guards is a bug.
> Can we just make it illegal?

I was pondering named unit tests and wanted to use this:

    {
        if(getenv("VERBOSE_TESTS"))
                scope(exit) writefln("Test successful");
    }

But it didn't work. The alternative, scope(exit) if(blah) write; should
accomplish the same task though.

I'd be good with it being an error, to make it obvious which method is
preferred.