[perl #69516] [BUG] Renaming named parameters of the form :f($foo) are not accurately represented in the .signature in Rakudo

[Carl Mäsak]

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<masak> rakudo: sub foo( :f($foo) ) {}; say &foo.signature.perl
<p6eval> rakudo ffe648: OUTPUT«:(Any :$foo?)␤»
<jnthn> masak: that looks wrong.
<masak> I thought so, too.
* masak submits rakudobug
<jnthn> masak: But actuallly we cheat rather than do that stuff right.
<jnthn> If you attempt :foo(:bar(:$baz)) you are also going to find it
does not yet work.