From @masak

<moritz_> and $() defaults to $/.ast if it exists
<masak> rakudo​: "foo" ~~ /foo/; say "What kind of $()l am I?"
<p6eval> rakudo 451b40​: OUTPUT«What kind of l am I?␤»
<masak> hm, shouldn't that say 'fool'?
<pmichaud> no
<pmichaud> spec was changed
<pmichaud> .ast is undef if not set.
<pmichaud> (it used to be .Str if not set)
<masak> ahah
<masak> right.
<masak> good. that's separation for you.
<moritz_> pmichaud​: $() should be $/.ast // $/.Str iirc
<pmichaud> moritz_​: oh, that's possible, yes.
<moritz_> S05​:2577​:C<$()> is a shorthand for C<$($/.ast // ~$/)>.
* masak submits rakudobug

@coke - Status changed from 'new' to 'open'

From @labster

labster​: r​: "foo" ~~ /foo/; say "What kind of $()l am I?"
p6eval​: rakudo 2441b0​: OUTPUT«What kind of fool am I?␤»

Seems to be working now.

From @FROGGS

Test added​: Raku/roast@87f2ed36c4

@FROGGS - Status changed from 'open' to 'resolved'