[perl #130041] [BUG] Pair in enum declaration should either DWIM or parsefail

[Larry Wall via RT]

Actually, the Z=> misbehavior is already called out in #128017.

On Tue, 28 Nov 2017 00:04:05 -0800, larry wrote:
> This also showed up when doing things like:
>     enum Foo (<A B C> Z=> 1,2,3);
> 
> Fixed in d9021cf16e7df051c5e17c33919c9bde44c5e0db but tests needed.
> 
> 
> On Mon, 07 Nov 2016 11:37:06 -0800, FROGGS.de wrote:
> > m: enum Foo ( A => 42, 'B', 'C', 'D' ); say +B
> > rakudo-moar e10f76: OUTPUT«43␤»
> > 
> > m: enum Foo ( 'A' => 42, 'B', 'C', 'D' ); say +B
> > rakudo-moar e10f76: OUTPUT«1␤»
> > 
> > m: enum Foo ( 'A' => 42, 'B', 'C', 'D' ); say +A
> > rakudo-moar e10f76: OUTPUT«===SORRY!=== Error while compiling 
> > <tmp>␤Undeclared name:␤    A used at line 1␤␤»
> > 
> > B should either yield 43, or the entire expression should fail to parse.
> > (I'd prefer the former fwiw.)
> > 
> 
>