From @masak

<TimToady> perl6​: my @​array = <a b c>; @​array XR~= 'X'; say @​array;
<p6eval> niecza v6-177-g365e216​: OUTPUT«Unhandled exception​: Unable to
resolve method ctxzyg [...]
<p6eval> ..rakudo 7175e5​: OUTPUT«a b c␤»
<p6eval> ..pugs​: OUTPUT«*** ␤ Unexpected "XR" [...]
<masak> hm. how does Rakudo parse that?
<pmichaud> rakudo parses it exactly the way it reads :)
<TimToady> probably XR[=]
<masak> why isn't that an erroneous modification of a constant?
<TimToady> maybe that's why niecza blows up on it
* masak submits rakudobug
<TimToady> if so, message is LTA
<jnthn> may be a lack of decontainerization somewhere
<masak> rakudo​: my $a = 'a'; $a R~= 'X'; say $a
<p6eval> rakudo 7175e5​: OUTPUT«Cannot modify readonly value␤ in
'&infix​:<=>' [...]
<masak> rakudo​: my $a = 'a'; $a XR~= 'X'; say $a
<p6eval> rakudo 7175e5​: OUTPUT«a␤»
<jnthn> rakudo​: ('a' R~ 'b') = 1
<p6eval> rakudo 7175e5​: ( no output )
<jnthn> golfd.
<masak> jnthn++

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

From @moritz

Fixed and tested in S03-metaops/reverse.t.

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