I'm looking at Brian DeFoy's recent article. He's got: 

$ perl -le "\$, = q( ); print q(a)..q(z)"
a b c d e f g h i j k l m n o p q r s t u v w x y z

[download]

I get an error, though: 

Experimental aliasing via reference not enabled at -e line 1.

[download]

And this simpler line works for me, without error with version 5.24.1 and 5.28.1: 

perl -le '$, = q( ); print a..z'

[download]

So I'm curious to know what he's doing with his referencing of the output field separator, $,. Thanks.

$PM = "Perl Monk's";
$MCF = "Most Clueless Friar Abbot Bishop Pontiff Deacon Curate Priest Vicar";
$nysus = $PM . ' ' . $MCF;
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In reply to Question on DeFoy's range operator example by nysus

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