[perl #115566] [BUG] Variables declared in quasi blocks don't work in Rakudo

[Matthew Wilson via RT]

new behavior:

13:48 <diakopter> m: use experimental :macros; macro foo { quasi { my $a = "OH 
HAI"; say $a } }; foo
13:48 <camelia> rakudo-moar 61d231: OUTPUT«===SORRY!===␤Optimizer: No lexical 
$a found␤»