[perl #75698] [BUG] Double zero when infix:<...> proceeds from -5 to ^5

[Carl Mäsak]

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<masak> rakudo: say (-5 ... ^5).perl
<p6eval> rakudo ae1300: OUTPUT«(-5, -4, -3, -2, -1, 0, 0, 1, 2, 3, 4)␤»
<diakopter> std is rebuilding, I think
* masak submits rakudobug
<masak> rakudo: say (-5 ... 5).perl
<p6eval> rakudo ae1300: OUTPUT«(-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5)␤»
<masak> aha!

So it's the prefix:<^> that does it. The infix:<...> operator probably
steps up from -5 to 0, and then includes 0 again as the first value of
C<^5>.