[perl #66702] [BUG] subs declared with an invocant should have a better error message in Rakudo

[Carl Mäsak]

# New Ticket Created by  "Carl Mäsak" 
# Please include the string:  [perl #66702]
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# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=66702 >


<[particle]> rakudo: sub postcircumfix:<[ ]>(Str $s: @i) { my $res =
""; for @i { $res ~= substr($s, $_, 1) }; $res }; say "OH HAI
WORLD"[7,0,7,2,9,4,-1]
<p6eval> rakudo 9dc941: OUTPUT«error:imcc:syntax error, unexpected
IDENTIFIER ('self')␤   in file 'EVAL_24' line 102␤too many arguments
passed (2) - 1 params expected␤in sub postcircumfix:[ ]
(/tmp/4NJRkuTmfe:1) [...]
<[particle]> oops...
<Matt-W> I think perhaps rakudo could have a better error message there
<[particle]> it must be a method when defined with an invocant
<[particle]> yes, indeed.
<[particle]> better error messages wanted, and we'll have them when we
move to STD.pm
* Matt-W waits for masak to say he's filing a bug
* masak files rakudobug