[perl #119369] [BUG] 'my %a{%a}' (declaring a hash with the hash itself in braces) doesn't parse in Rakudo (but does in STD.pm6)

[Carl Mäsak]

# New Ticket Created by  "Carl Mäsak" 
# Please include the string:  [perl #119369]
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# <URL: https://rt.perl.org:443/rt3/Ticket/Display.html?id=119369 >


<diakopter> rnp: my %a{%a}
<camelia> rakudo 13f2f9: OUTPUT«===SORRY!=== Error while compiling
/tmp/K2iV1Xdt96␤Variable '%a' is not declared [...]
<camelia> ..pugs:  ( no output )
<camelia> ..niecza v24-88-g1f87209: OUTPUT«===SORRY!===␤␤Variable %a
is not predeclared [...]
<diakopter> std: my %a{%a}
<camelia> std c2215f0: OUTPUT«ok 00:00 43m␤»
<moritz> wait, what? It's supposed to be visible before the
declaration is finished?
<jnthn> stdbug :P
<masak> yeah, stdbug.
<TimToady> how so?
<masak> what? really?
<diakopter> :}
<jnthn> dude!
<TimToady> it's just not caring about the semantics of {%a}
<FROGGS> ahhh
* masak reluctantly submits rakudobug
<jnthn> masak: um, why? :)
<TimToady> it's the same one we've already had
<TimToady> %a isn't introduced soon enough
<masak> TimToady: different case, though.
<masak> and this one might well be harder.
<diakopter> good luck finding the other(s)...
<TimToady> not if you fix the first one right...
<masak> yeah, right :)
<diakopter> seems legit
* diakopter is feeling MeanFuzzer personality today
<masak> diakopter++ # MeanFuzzer

If you cannot follow the confused negotiation above... I don't blame
you. Anyway, the conclusion is that STD.pm6 is correct and Rakudo is
wrong. (And Niecza is wrong too, but this is a rakudobug ticket.)