[perl #77246] _~*.A parses in Rakudo but fails in STD

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# New Ticket Created by  Paweł Pabian 
# Please include the string:  [perl #77246]
# in the subject line of all future correspondence about this issue. 
# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=77246 >


[15:31] <bbkr> std: _~*.A
[15:31] <p6eval> std 31912: OUTPUT«===SORRY!===␤Undeclared 
name:␤ '_' used at line 1␤Check failed␤FAILED 00:01 114m␤»
[15:31] <bbkr> rakudo: _~*.A
[15:31] <p6eval> rakudo bef86e:  ( no output )
[15:32] <bbkr> should example above be reported?
[15:32] <masak> if you can explain to us what it does. :)
[15:33] <moritz_> it calls a routine
[15:33] <moritz_> called _
[15:33] <masak> rakudo: _~*.A; say "alive"
[15:33] <p6eval> rakudo bef86e: OUTPUT«alive␤»
[15:33] <moritz_> with an argument that is a curried, stringied method call
[15:33] <moritz_> you know *.A
[15:33] <masak> why is &_ defined?
[15:33] <moritz_> it shouldn't be
[15:33] <bbkr> exactly, why?
[15:33] <moritz_> rakudo: _; say "alive"
[15:33] <masak> bbkr: there's your bug.
[15:33] <p6eval> rakudo bef86e: OUTPUT«Could not find sub &_␤  in main program 
body at line 22:/tmp/4p240eNSrS␤»
[15:34] <bbkr> hmm
[15:34] <bbkr> rakudo: _~1; say "alive"
[15:34] <p6eval> rakudo bef86e: OUTPUT«Could not find sub &_␤  in main program 
body at line 22:/tmp/9xgRgdcVYm␤»
[15:34] <masak> ooh! the whole thing is curried, and thus never run!
[15:34] <masak> of course!
[15:34] <moritz_> but how is it parsed?
[15:34] <moritz_> as _() ~ *.A?
[15:34] <masak> moritz_: rakudo doesn't check for undeclared sub names.
[15:35] <masak> moritz_: aye.
[15:35] <moritz_> but it shouldn't
[15:35] <moritz_> should be  _(~*.A), afaict
[15:35] <masak> oh.
[15:35] <masak> then that's the bug. :)
[15:35] <-- tadzik has left this server (Ping timeout: 252 seconds).
[15:35] <moritz_> because unknown identifiers should be treated as listops
[15:35] <moritz_> no?
[15:35] <moritz_> bbkr: have fun composing that ticket :-)
[15:36] <masak> just copy all we say into it :)
[15:36] <masak> moritz_: as far as I know, you're right.
[15:36] <masak> about the listops thing.