$return in wildcarded void functions

[Frank Ch. Eigler]

On Wed, Mar 07, 2007 at 11:05:12AM -0600, David Smith wrote:
(please trim!)

> [...]
> Hmm, I'm missing something.  Why do we need $?var *and* $!var?  It seems 
> like $?var would suffice.

The reason why it doesn't becomes clear with an example, and with the
realization that $var would still trigger a *translate-time* error if
it did not exist in context.

   if ($?var) { use($!var) } // works even if $var would fail to translate

- FChE
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